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Liu, Jialin, David Hui i Denvid Lau. "Two-dimensional nanomaterial-based polymer composites: Fundamentals and applications". Nanotechnology Reviews 11, nr 1 (1.01.2022): 770–92. http://dx.doi.org/10.1515/ntrev-2022-0041.
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Abstract Two-dimensional (2D) nanomaterial-reinforced polymer composites exhibit superior properties and multifunctional applications. Compared to lower dimensional nanomaterials such as nanotubes and nanoparticles, 2D nanomaterials show a larger surface area. The large surface area makes 2D nanomaterials more effectively restrict the mobility of polymer chains and yields better reinforcing efficiency than the lower-dimensional nanomaterials. To gain an in-depth understanding and extend the applications of polymer composites reinforced with 2D nanomaterials, this paper reviews the progress in the fundamentals of synthesis and applications of such composites. The motivation and improvement of adding 2D nanomaterials to polymer materials are introduced first, followed by the synthesis approaches and the properties of typical 2D nanomaterials, including graphene, boron nitride nanosheet, and molybdenum disulfide nanosheet. Based on the properties of 2D nanomaterials, polymer composites reinforced with different types of 2D nanomaterials are designed for structural application, thermal dissipation application, tribological application, three-dimensional printing composite structures, and strain sensing application. Afterwards, the significance of reinforcement–matrix interaction and its improving approach are reviewed. The current progress envisions that polymer composites reinforced with 2D nanomaterials can be used in the fields of aviation and aerospace for improving radiation shielding capacity and nanomedical engineering.
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Danilenko, I., O. Gorban, A. Shylo, L. Akhkozov, M. Lakusta i T. Konstantinova. "New multifunctional zirconia composite nanomaterials – from electronics to ceramics". IOP Conference Series: Materials Science and Engineering 213 (czerwiec 2017): 012016. http://dx.doi.org/10.1088/1757-899x/213/1/012016.
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Tran, Thien, Daniel M. Deocampo i Nadine Kabengi. "Synthesis and Optimization of Multiwalled Carbon Nanotubes–Ferrihydrite Hybrid Composite". Journal of Composites Science 5, nr 1 (26.12.2020): 5. http://dx.doi.org/10.3390/jcs5010005.
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Carbon nanotubes (CNT) are a family of carbon nanomaterials that have uses in many technological and medical applications due to their unique properties. However, compared to other nanomaterials, CNT have a significantly lower specific surface areas (SSA), which is a critical limitation for applications. To overcome this limitation, here, we report a new protocol to synthesize a hybrid material composed of varying ratios of multiwalled carbon nanotubes (MWCNT) and ferrihydrite (FHY). Furthermore, through a series of physical and electrochemical characterization tests, we determined that 36% FHY and 64% MWCNT is the optimum ratio for a composite that maximizes both SSA and specific capacitance. The calculated SSA of the composite was 190 m2·g−1, 2.9 times higher than that of MWCNT alone. Moreover, the composite retained valuable electrochemical properties of CNT with an estimated specific capacitance of 100 F·g−1. This composite is a promising multifunctional nanomaterial for environmental and technological applications requiring electrochemical reactivity and high specific areas such as environmental biosensors, and capacitive deionization for wastewater remediation, and water softening.
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Ali, Alamry, i Andri Andriyana. "Properties of multifunctional composite materials based on nanomaterials: a review". RSC Advances 10, nr 28 (2020): 16390–403. http://dx.doi.org/10.1039/c9ra10594h.
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Chan, Ming-Hsien, Wen-Tse Huang, Aishwarya Satpathy, Ting-Yi Su, Michael Hsiao i Ru-Shi Liu. "Progress and Viewpoints of Multifunctional Composite Nanomaterials for Glioblastoma Theranostics". Pharmaceutics 14, nr 2 (21.02.2022): 456. http://dx.doi.org/10.3390/pharmaceutics14020456.
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The most common malignant tumor of the brain is glioblastoma multiforme (GBM) in adults. Many patients die shortly after diagnosis, and only 6% of patients survive more than 5 years. Moreover, the current average survival of malignant brain tumors is only about 15 months, and the recurrence rate within 2 years is almost 100%. Brain diseases are complicated to treat. The reason for this is that drugs are challenging to deliver to the brain because there is a blood–brain barrier (BBB) protection mechanism in the brain, which only allows water, oxygen, and blood sugar to enter the brain through blood vessels. Other chemicals cannot enter the brain due to their large size or are considered harmful substances. As a result, the efficacy of drugs for treating brain diseases is only about 30%, which cannot satisfy treatment expectations. Therefore, researchers have designed many types of nanoparticles and nanocomposites to fight against the most common malignant tumors in the brain, and they have been successful in animal experiments. This review will discuss the application of various nanocomposites in diagnosing and treating GBM. The topics include (1) the efficient and long-term tracking of brain images (magnetic resonance imaging, MRI, and near-infrared light (NIR)); (2) breaking through BBB for drug delivery; and (3) natural and chemical drugs equipped with nanomaterials. These multifunctional nanoparticles can overcome current difficulties and achieve progressive GBM treatment and diagnosis results.
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Tomšič, Brigita, Špela Bajrič, Kaja Cergonja, Gracija Čepič, Ana Gerl, Egshig Ladislav Varga, Marina Panoska i in. "Tailoring of multifunctional cotton fabric by embedding a TiO2+ZnO composite into a chitosan matrix". Tekstilec 66 (7.07.2023): 1–14. http://dx.doi.org/10.14502/tekstilec.66.2023049.
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The use of nanomaterials to functionalise textiles offers new opportunities for chemical modification of textile fibres’ surfaces to achieve multifunctional protective properties. In this study, novel coatings were tailored on cotton fabric by embedding a mixture of TiO2 and ZnO nanoparticles (NPs) of different molar ratios into a chitosan polymer matrix. The excitation energies of the TiO2+ZnO composites generated in the coatings ranged from 3.20 eV to 3.25 eV, indicating that the photocatalytic performance of the functionalised cotton was driven by UV light. The presence of TiO2+ZnO composites increased the UV protection factor (UPF) of the cotton fabric from 4.2 for the untreated sample to 15–21 for the functionalised samples. The UPF values of the coatings slightly decreased after repeated washing. The ZnO in the TiO2+ZnO composites conferred biocidal activity to the coatings, which were resistant to washing at higher ZnO concentrations. In addition, the TiO2 in the TiO2+ZnO composites was responsible for the enhanced photocatalytic self-cleaning of the functionalised cotton, which was observed during the initial period of illumination at lower ZnO concentrations in the composite. The main advantage of these TiO2+ZnO composite coatings is their multifunctionality, which cannot be provided by single-component TiO2 or ZnO coatings. Moreover, these coatings have wide-ranging practical applications, as they were composed of commercially available nanomaterials and were applied using conventional pad–dry–cure equipment.
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Hu, Yu, Nan Yao, Jin Tan i Yang Liu. "An Efficient and Reusable Multifunctional Composite Magnetic Nanocatalyst for Knoevenagel Condensation". Synlett 30, nr 06 (6.03.2019): 699–702. http://dx.doi.org/10.1055/s-0037-1612076.
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A range of multifunctional magnetic metal–organic framework nanomaterials consisting of various mass ratios of the metal–organic framework MIL-53(Fe) and magnetic SiO2@NiFe2O4 nanoparticles were designed, prepared, characterized, and evaluated as heterogeneous catalysts for the Knoevenagel condensation. The as-fabricated nanomaterials, especially the nanocatalyst MIL-53(Fe)@SiO2@NiFe2O4(1.0), showed good catalytic performance in the Knoevenagel condensation at room temperature as a result of synergistic interaction between the Lewis acid iron sites of MIL-53(Fe) and the active sites of the magnetic SiO2@NiFe2O4 nanoparticles. In addition, the heterogeneous catalyst was readily recovered and a recycling test showed that it could be reused for five times without significant loss of its catalytic activity, making it economical and environmentally friendly.
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Shen, Jia-Yan, Ting Dong, Liang Fang, Jian-Jun Ma i Li-Hong Zeng. "Study on Multifunctional Composite Nanomaterials for Controlled Drug Release in Biomedicine". Journal of Nanoscience and Nanotechnology 21, nr 2 (1.02.2021): 1230–35. http://dx.doi.org/10.1166/jnn.2021.18685.
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Nanoscience is a highly comprehensive, interdisciplinary discipline based on many advanced science and technology, and has developed very rapidly in the past few decades. Nanoscience and technology has been widely used in many fields such as biomedicine, materials science, chemistry, physics, and electronic information engineering. Nanomaterials are widely used due to their many excellent properties such as quantum size effects, small size effects, surface effects, and tunneling effects, and have become hot research areas. It is very suitable as a carrier for antitumor drug molecules, which is conducive to improving drug efficacy and reducing drugs side effects. After selective functionalization, it is highly possible to achieve the loading and release of multiple drug molecules. Based on the magnetic mesoporous Fe3O4-MSNs composite nanoparticles, we have modified a series of organosilane coupling agents on its surface. The most commonly used antitumor drug (adriamycin) in clinical was selected as a model to evaluate the loading and release behavior of modified composite nanoparticles Fe3O4-MSNs on this drug. The results indicate that Fe3O4 is selectively modified after appropriate modification of the silane coupling agent. MSNs carrier can effectively regulate the adsorption and release rate of hydrophilic DOX and hydrophobic PTX, and shows a good drug control ability.
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Monteserín, Cristina, Miren Blanco, Nieves Murillo, Ana Pérez-Márquez, Jon Maudes, Jorge Gayoso, Jose Manuel Laza, Estíbaliz Hernáez, Estíbaliz Aranzabe i Jose Luis Vilas. "Novel Antibacterial and Toughened Carbon-Fibre/Epoxy Composites by the Incorporation of TiO2 Nanoparticles Modified Electrospun Nanofibre Veils". Polymers 11, nr 9 (19.09.2019): 1524. http://dx.doi.org/10.3390/polym11091524.
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The inclusion of electrospun nanofiber veils was revealed as an effective method for enhancing the mechanical properties of fiber-reinforced epoxy resin composites. These veils will eventually allow the incorporation of nanomaterials not only for mechanical reinforcement but also in multifunctional applications. Therefore, this paper investigates the effect of electrospun nanofibrous veils made of polyamide 6 modified with TiO2 nanoparticles on the mechanical properties of a carbon-fiber/epoxy composite. The nanofibers were included in the carbon-fiber/epoxy composite as a single structure. The effect of positioning these veils in different composite positions was investigated. Compared to the reference, the use of unmodified and TiO2 modified veils increased the flexural stress at failure and the fracture toughness of composites. When TiO2 modified veils were incorporated, new antibacterial properties were achieved due to the photocatalytic properties of the veils, widening the application area of these composites.
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Chan, Ming-Hsien, Chien-Hsiu Li, Yu-Chan Chang i Michael Hsiao. "Iron-Based Ceramic Composite Nanomaterials for Magnetic Fluid Hyperthermia and Drug Delivery". Pharmaceutics 14, nr 12 (24.11.2022): 2584. http://dx.doi.org/10.3390/pharmaceutics14122584.
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Because of the unique physicochemical properties of magnetic iron-based nanoparticles, such as superparamagnetism, high saturation magnetization, and high effective surface area, they have been applied in biomedical fields such as diagnostic imaging, disease treatment, and biochemical separation. Iron-based nanoparticles have been used in magnetic resonance imaging (MRI) to produce clearer and more detailed images, and they have therapeutic applications in magnetic fluid hyperthermia (MFH). In recent years, researchers have used clay minerals, such as ceramic materials with iron-based nanoparticles, to construct nanocomposite materials with enhanced saturation, magnetization, and thermal effects. Owing to their unique structure and large specific surface area, iron-based nanoparticles can be homogenized by adding different proportions of ceramic minerals before and after modification to enhance saturation magnetization. In this review, we assess the potential to improve the magnetic properties of iron-based nanoparticles and in the preparation of multifunctional composite materials through their combination with ceramic materials. We demonstrate the potential of ferromagnetic enhancement and multifunctional composite materials for MRI diagnosis, drug delivery, MFH therapy, and cellular imaging applications.
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Thirumurugan, Arun, Ananthakumar Ramadoss, Shanmuga Sundar Dhanabalan, Sathish-Kumar Kamaraj, Natarajan Chidhambaram, Suyambrakasam Gobalakrishnan, Carolina Venegas Abarzúa, Yerko Alejandro Reyes Caamaño, Rednam Udayabhaskar i Mauricio J. Morel. "MXene/Ferrite Magnetic Nanocomposites for Electrochemical Supercapacitor Applications". Micromachines 13, nr 10 (20.10.2022): 1792. http://dx.doi.org/10.3390/mi13101792.
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MXene has been identified as a new emerging material for various applications including energy storage, electronics, and bio-related due to its wider physicochemical characteristics. Further the formation of hybrid composites of MXene with other materials makes them interesting to utilize in multifunctional applications. The selection of magnetic nanomaterials for the formation of nanocomposite with MXene would be interesting for the utilization of magnetic characteristics along with MXene. However, the selection of the magnetic nanomaterials is important, as the magnetic characteristics of the ferrites vary with the stoichiometric composition of metal ions, particle shape and size. The selection of the electrolyte is also important for electrochemical energy storage applications, as the electrolyte could influence the electrochemical performance. Further, the external magnetic field also could influence the electrochemical performance. This review briefly discusses the synthesis method of MXene, and ferrite magnetic nanoparticles and their composite formation. We also discussed the recent progress made on the MXene/ferrite nanocomposite for potential applications in electrochemical supercapacitor applications. The possibility of magnetic field-assisted supercapacitor applications with electrolyte and electrode materials are discussed.
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Mohapi, Maleshoane, Jeremia Shale Sefadi, Mokgaotsa Jonas Mochane, Sifiso Innocent Magagula i Kgomotso Lebelo. "Effect of LDHs and Other Clays on Polymer Composite in Adsorptive Removal of Contaminants: A Review". Crystals 10, nr 11 (22.10.2020): 957. http://dx.doi.org/10.3390/cryst10110957.
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Recently, the development of a unique class of layered silicate nanomaterials has attracted considerable interest for treatment of wastewater. Clean water is an essential commodity for healthier life, agriculture and a safe environment at large. Layered double hydroxides (LDHs) and other clay hybrids are emerging as potential nanostructured adsorbents for water purification. These LDH hybrids are referred to as hydrotalcite-based materials or anionic clays and promising multifunctional two-dimensional (2D) nanomaterials. They are used in many applications including photocatalysis, energy storage, nanocomposites, adsorption, diffusion and water purification. The adsorption and diffusion capacities of various toxic contaminants heavy metal ions and dyes on different unmodified and modified LDH-samples are discussed comparatively with other types of nanoclays acting as adsorbents. This review focuses on the preparation methods, comparison of adsorption and diffusion capacities of LDH-hybrids and other nanoclay materials for the treatment of various contaminants such as heavy metal ions and dyes.
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Ferrone, Eloisa, Rodolfo Araneo, Andrea Notargiacomo, Marialilia Pea i Antonio Rinaldi. "ZnO Nanostructures and Electrospun ZnO–Polymeric Hybrid Nanomaterials in Biomedical, Health, and Sustainability Applications". Nanomaterials 9, nr 10 (12.10.2019): 1449. http://dx.doi.org/10.3390/nano9101449.
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ZnO-based nanomaterials are a subject of increasing interest within current research, because of their multifunctional properties, such as piezoelectricity, semi-conductivity, ultraviolet absorption, optical transparency, and photoluminescence, as well as their low toxicity, biodegradability, low cost, and versatility in achieving diverse shapes. Among the numerous fields of application, the use of nanostructured ZnO is increasingly widespread also in the biomedical and healthcare sectors, thanks to its antiseptic and antibacterial properties, role as a promoter in tissue regeneration, selectivity for specific cell lines, and drug delivery function, as well as its electrochemical and optical properties, which make it a good candidate for biomedical applications. Because of its growing use, understanding the toxicity of ZnO nanomaterials and their interaction with biological systems is crucial for manufacturing relevant engineering materials. In the last few years, ZnO nanostructures were also used to functionalize polymer matrices to produce hybrid composite materials with new properties. Among the numerous manufacturing methods, electrospinning is becoming a mainstream technique for the production of scaffolds and mats made of polymeric and metal-oxide nanofibers. In this review, we focus on toxicological aspects and recent developments in the use of ZnO-based nanomaterials for biomedical, healthcare, and sustainability applications, either alone or loaded inside polymeric matrices to make electrospun composite nanomaterials. Bibliographic data were compared and analyzed with the aim of giving homogeneity to the results and highlighting reference trends useful for obtaining a fresh perspective about the toxicity of ZnO nanostructures and their underlying mechanisms for the materials and engineering community.
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Tran, Hung-Vu, Nhat M. Ngo, Riddhiman Medhi, Pannaree Srinoi, Tingting Liu, Supparesk Rittikulsittichai i T. Randall Lee. "Multifunctional Iron Oxide Magnetic Nanoparticles for Biomedical Applications: A Review". Materials 15, nr 2 (10.01.2022): 503. http://dx.doi.org/10.3390/ma15020503.
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Due to their good magnetic properties, excellent biocompatibility, and low price, magnetic iron oxide nanoparticles (IONPs) are the most commonly used magnetic nanomaterials and have been extensively explored in biomedical applications. Although magnetic IONPs can be used for a variety of applications in biomedicine, most practical applications require IONP-based platforms that can perform several tasks in parallel. Thus, appropriate engineering and integration of magnetic IONPs with different classes of organic and inorganic materials can produce multifunctional nanoplatforms that can perform several functions simultaneously, allowing their application in a broad spectrum of biomedical fields. This review article summarizes the fabrication of current composite nanoplatforms based on integration of magnetic IONPs with organic dyes, biomolecules (e.g., lipids, DNAs, aptamers, and antibodies), quantum dots, noble metal NPs, and stimuli-responsive polymers. We also highlight the recent technological advances achieved from such integrated multifunctional platforms and their potential use in biomedical applications, including dual-mode imaging for biomolecule detection, targeted drug delivery, photodynamic therapy, chemotherapy, and magnetic hyperthermia therapy.
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Herrera-Ruiz, Abigail, Benjamín Betancourt Tovar, Rubén Gutiérrez García, María Fernanda Leal Tamez i Narsimha Mamidi. "Nanomaterials-Incorporated Chemically Modified Gelatin Methacryloyl-Based Biomedical Composites: A Novel Approach for Bone Tissue Engineering". Pharmaceutics 14, nr 12 (29.11.2022): 2645. http://dx.doi.org/10.3390/pharmaceutics14122645.
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Gelatin methacryloyl (GelMA)-based composites are evolving three-dimensional (3D) networking hydrophilic protein composite scaffolds with high water content. These protein composites have been devoted to biomedical applications due to their unique abilities, such as flexibility, soft structure, versatility, stimuli-responsiveness, biocompatibility, biodegradability, and others. They resemble the native extracellular matrix (ECM) thanks to their remarkable cell-adhesion and matrix-metalloproteinase (MMP)-responsive amino acid motifs. These favorable properties promote cells to proliferate and inflate within GelMA-protein scaffolds. The performance of GelMA composites has been enriched using cell-amenable components, including peptides and proteins with a high affinity to harmonize cellular activities and tissue morphologies. Due to their inimitable merits, GelMA systems have been used in various fields such as drug delivery, biosensor, the food industry, biomedical, and other health sectors. The current knowledge and the role of GelMA scaffolds in bone tissue engineering are limited. The rational design and development of novel nanomaterials-incorporated GelMA-based composites with unique physicochemical and biological advantages would be used to regulate cellular functionality and bone regeneration. Substantial challenges remain. This review focuses on recent progress in mitigating those disputes. The study opens with a brief introduction to bone tissue engineering and GelMA-based composites, followed by their potential applications in bone tissue engineering. The future perspectives and current challenges of GelMA composites are demonstrated. This review would guide the researchers to design and fabricate more efficient multifunctional GelMA-based composites with improved characteristics for their practical applications in bone tissue engineering and biomedical segments.
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Nath, Pinku Chandra, Amiya Ojha, Shubhankar Debnath, Minaxi Sharma, Kandi Sridhar, Prakash Kumar Nayak i Baskaran Stephen Inbaraj. "Biogeneration of Valuable Nanomaterials from Agro-Wastes: A Comprehensive Review". Agronomy 13, nr 2 (15.02.2023): 561. http://dx.doi.org/10.3390/agronomy13020561.
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The exponential growth of agricultural output is a result of the increasing world population. Agro-wastes are now acknowledged as an alternative material for the manufacture of renewable, inexpensive, and sustainable bio-composite-based products. Huge amounts of agricultural produce are often lost owing to a lack of processing facilities or storage space. Agriculture wastes contain a significant concentration of carbohydrates as well as various multifunctional groups and organic substances, such as polymeric proteins. Interestingly, nanotechnology provides better potential to transform agricultural wastes easily into valuable and cost-effective products, removing the need to utilize noxious chemicals, which can create a variety of health and environmental difficulties. Recently, there has been an increase in interest in eco-friendly nanomaterial (NM) production techniques that utilize extracts generated from agricultural waste. Such nanoparticles (NPs) have been extensively studied for numerous uses, including antibacterial agents, water purification, the breakdown of industrial colours, and many others. Consequently, the purpose of this review is to investigate the different sources, characteristics, and nano-management of agro-waste; valuable NMs derived from agro-waste; and their possible applications.
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Sasmal, Abhishek, Payel Maiti, Sourav Maity, Shrabanee Sen i A. Arockiarajan. "Air-plasma discharged PVDF based binary magnetoelectric composite for simultaneously enhanced energy storage and conversion efficiency". Applied Physics Letters 122, nr 8 (20.02.2023): 083902. http://dx.doi.org/10.1063/5.0137968.
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Different nanomaterials and their modified forms are very often added into a poly(vinylidene fluoride) (PVDF) matrix in order to improve the energy storage and conversion efficiency of the system. The improvement in energy storage density caused by this secondary nanomaterial addition is most often found to be accompanied by the reduction in energy storage efficiency due to increased amounts of space charges. Here, we show that both the capacitive energy storage density and efficiency can be simultaneously improved by air-plasma discharging on the PVDF based composite system. The energy storage density and efficiency of a 5 wt. % BiFeO3 loaded PVDF film (5BF) have been found to be increased to ∼1.55 J/cm3 and ∼73%, respectively, from the values of ∼1.36 J/cm3 and 59% after air-plasma discharging. The dipole rotation caused by air-plasma discharging also helped in improving the mechanical to electrical energy conversion efficiency and magnetoelectric coupling of the studied composite system. Upon similar periodic applied stress, the pristine and air-plasma discharged 5BF film showed ∼3 and 9.6 μW/cm2 of output electrical power density with ∼13.5 and 19.2 V of open circuit output voltage, respectively. The air-plasma discharged 5BF film (5BFD) has also shown an excellent magnetoelectric coupling coefficient ( α33) of ∼35 mV cm−1 Oe−1 at 1 kHz frequency of fixed AC magnetic field (∼3 Oe) and 4 kOe of DC bias field. The simultaneous improvement of all of these parameters of the studied composite system caused by air-plasma discharging proves its multifunctional applicability in a variety of real life applications.
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Kwiatkowska, Angelika, Monika Drabik, Agata Lipko, Anna Grzeczkowicz, Radosław Stachowiak, Anna Marszalik i Ludomira H. Granicka. "Composite Membrane Dressings System with Metallic Nanoparticles as an Antibacterial Factor in Wound Healing". Membranes 12, nr 2 (13.02.2022): 215. http://dx.doi.org/10.3390/membranes12020215.
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Wound management is the burning problem of modern medicine, significantly burdening developed countries’ healthcare systems. In recent years, it has become clear that the achievements of nanotechnology have introduced a new quality in wound healing. The application of nanomaterials in wound dressing significantly improves their properties and promotes the healing of injuries. Therefore, this review paper presents the subjectively selected nanomaterials used in wound dressings, including the metallic nanoparticles (NPs), and refers to the aspects of their application as antimicrobial factors. The literature review was supplemented with the results of our team’s research on the elements of multifunctional new-generation dressings containing nanoparticles. The wound healing multiple molecular pathways, mediating cell types, and affecting agents are discussed herein. Moreover, the categorization of wound dressings is presented. Additionally, some materials and membrane constructs applied in wound dressings are described. Finally, bacterial participation in wound healing and the mechanism of the antibacterial function of nanoparticles are considered. Membranes involving NPs as the bacteriostatic factors for improving wound healing of skin and bones, including our experimental findings, are discussed in the paper. In addition, some studies of our team concerning the selected bacterial strains’ interaction with material involving different metallic NPs, such as AuNPs, AgNPs, Fe3O4NPs, and CuNPs, are presented. Furthermore, nanoparticles’ influence on selected eukaryotic cells is mentioned. The ideal, universal wound dressing still has not been obtained; thus, a new generation of products have been developed, represented by the nanocomposite materials with antibacterial, anti-inflammatory properties that can influence the wound-healing process.
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Mikhaylov, Georgy, Urska Mikac, Miha Butinar, Vito Turk, Boris Turk, Sergey Psakhie i Olga Vasiljeva. "Theranostic Applications of an Ultra-Sensitive T1 and T2 Magnetic Resonance Contrast Agent Based on Cobalt Ferrite Spinel Nanoparticles". Cancers 14, nr 16 (20.08.2022): 4026. http://dx.doi.org/10.3390/cancers14164026.
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Nano-dimensional materials have become a focus of multiple clinical applications due to their unique physicochemical properties. Magnetic nanoparticles represent an important class of nanomaterials that are widely studied for use as magnetic resonance (MR) contrast and drug delivery agents, especially as they can be detected and manipulated remotely. Using magnetic cobalt ferrite spinel (MCFS) nanoparticles, this study was aimed at developing a multifunctional drug delivery platform with MRI capability for use in cancer treatment. We found that MCFS nanoparticles demonstrated outstanding properties for contrast MRI (r1 = 22.1 s–1mM–1 and r2 = 499 s–1mM–1) that enabled high-resolution T1- and T2-weighted MRI-based signal detection. Furthermore, MCFS nanoparticles were used for the development of a multifunctional targeted drug delivery platform for cancer treatment that is concurrently empowered with the MR contrast properties. Their therapeutic effect in systemic chemotherapy and unique MRI double-contrast properties were confirmed in vivo using a breast cancer mouse tumor model. Our study thus provides an empirical basis for the development of a novel multimodal composite drug delivery system for anticancer therapy combined with noninvasive MRI capability.
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Adamska, Elżbieta, Karolina Niska, Anna Wcisło i Beata Grobelna. "Characterization and Cytotoxicity Comparison of Silver- and Silica-Based Nanostructures". Materials 14, nr 17 (31.08.2021): 4987. http://dx.doi.org/10.3390/ma14174987.
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Core-shell structures are the most common type of composite material nanostructures due to their multifunctional properties. Silver nanoparticles show broad antimicrobial activity, but the safety of their utilization still remains an issue to tackle. In many applications, the silver core is coated with inorganic shell to reduce the metal toxicity. This article presents the synthesis of various materials based on silver and silica nanoparticles, including SiO2@Ag, Ag@SiO2, and sandwich nanostructures—Ag@SiO2@Ag—and the morphology of these nanomaterials based on transmission electron microscopy (TEM), UV-Vis spectroscopy, and FT-IR spectroscopy. Moreover, we conducted the angle measurements due to the strong relationship between the level of surface wettability and cell adhesion efficiency. The main aim of the study was to determine the cytotoxicity of the obtained materials against two types of human skin cells—keratinocytes (HaCaT) and fibroblasts (HDF). We found that among all the obtained structures, SiO2@Ag and Ag@SiO2 showed the lowest cell toxicity and very high half-maximal inhibitory concentration. Moreover, the measurements of the contact angle showed that Ag@SiO2 nanostructures were different from other materials due to their superhydrophilic nature. The novel approach presented here shows the promise of implementing core-shell type nanomaterials in skin-applied cosmetic or medical products.
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Zhang, Yaping, Jixiang Xu, Lei Wang i Banglin Chen. "Multiple roles of metal–organic framework-based catalysts in photocatalytic CO2 reduction". Chemical Physics Reviews 3, nr 4 (grudzień 2022): 041306. http://dx.doi.org/10.1063/5.0099758.
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Photocatalytic CO2 reduction is one of the ideal means to realize the carbon cycle. Metal–organic frameworks (MOFs) have received great attention as catalysts for photocatalytic CO2RR in recent years. The adjustable metal nodes and organic ligands in MOFs make them multifunctional catalysts. Therefore, they can participate in photocatalytic CO2RR in different roles. MOFs can be used as primary photocatalysts or be coupled with other active species to form composite materials. They can also act as co-catalysts to cooperate with photosensitizers. Moreover, MOFs can be used as precursors or templates for the preparation of derived nanomaterials. These derivatives are also promising candidates in photocatalytic CO2RR. This review aims to outline multiple roles of MOFs and their derivatives in photocatalytic CO2RR. Meanwhile, the corresponding modification strategies are summarized. At the end of the manuscript, the present problems of MOFs applied in photocatalytic CO2RR are summarized and the future development and challenges are also proposed.
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Eremenko, A. M., I. S. Petrik i A. V. Rudenko. "Targeted requirements for biomedical nanomaterials based on dispersed oxides and textiles modified with metal NPS". Himia, Fizika ta Tehnologia Poverhni 14, nr 3 (30.09.2023): 300–309. http://dx.doi.org/10.15407/hftp14.03.300.
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This article analyses some literature data and the authors’ developments in the technology of creating of therapeutic depots in the form of films, dispersions of metal oxides and textiles with immobilized biocompatible silver nanoparticles (NPs) in the structure of SiO2, TiO2, cotton, biopolymers (alginate, chitosan, lignin, etc.), that have biocidal action, and future trends in this area. We and other researchers have developed methods for the synthesis of photocatalytically active TiO2 and SiO2 films, modified with gold/silver/copper NPs, suitable for medical use. An economical and simple low-temperature methods of manufacturing antimicrobial textiles by photo- or thermal activation and the possibility of their multiple use have been developed. The production of biomedical textiles is recently focused on the widespread use of non-toxic biopolymers, combined with textile. We have obtained compositions based on nanodispersed silica with polysaccharide sodium alginate and silver NPs with pronounced hemostatic and bactericidal properties. Obtaining a hybrid material based on a bactericidal textile combined with a dispersed oxide is promising for additional absorption of toxins and wound cleaning. The creation of such universal multifunctional materials includes their high bactericidal and antiviral multiply use. Hybrid materials based on metal NPs in the structure of carriers of different nature as films and dispersions of biocompatible oxides, biopolymers, textiles have a protection against possible toxic effects of nanoparticles and metal ions, self-cleaning capability, photocatalytic, hemostatic properties, temperature resistance, and other. The development and application of such materials is growing rapidly. So, materials based on Ag/SiO2 dispersions have high antibacterial and antiviral action (single application). Ag/SiO2 films can act as durable antibacterial cover. There is an enhancement in the antibacterial properties of Ag-TiO2 NPs under visible light irradiation and the photocatalytic effect under UV light (single application in the powder form). Self-cleaning, antimicrobial and UV-protective properties have Ag-TiO2 NPs in textile. Cotton modified with MeNPs demonstrates high efficiency of destruction of bacteria E. coli, K. pneumoniae, E. aerogenes, P. vulgaris, S. aureus, C. albicans, etc., with saving of biocidal activity after 5 cycles of washing. The dynamics of silver ions release from the surface of NPs in the structure of textile upon their contact with water for 72 hours have been studied. The number of irreversibly bound particles in textile structure is sufficient for subsequent use. Modified fabrics are reusable. Composites based on metal NPs in the structure of silica or titania in the presence of biopolymers are effective hemostatic agents with a bactericidal effect. Sodium alginate has a reducing and stabilizing effect on nanoparticles, and silica prevents agglomeration of metal NPs in the resulting composite. However, it is quite difficult to satisfy the numerous target requirements for biomedical nanomaterials based on metal NPs in the composition of dispersed oxides as well as textiles and/or biopolymers (“all in one”) to obtain a single universal multifunctional material that does not lose its properties during operation. It makes more sense to produce composites for purpose targeted applications, such as bactericidal and antiviral, hydrophobic coatings for laboratory surfaces, package and so on. Researches in this area are in progress.
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Qi, Chunxia, Mengxiao Zhao, Tian Fang, Yaping Zhu, Peisan Wang, Anjian Xie i Yuhua Shen. "Multifunctional Hollow Porous Fe3O4@N-C Nanocomposites as Anodes of Lithium-Ion Battery, Adsorbents and Surface-Enhanced Raman Scattering Substrates". Molecules 28, nr 13 (3.07.2023): 5183. http://dx.doi.org/10.3390/molecules28135183.
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At present, it is still a challenge to prepare multifunctional composite nanomaterials with simple composition and favorable structure. Here, multifunctional Fe3O4@nitrogen-doped carbon (N-C) nanocomposites with hollow porous core-shell structure and significant electrochemical, adsorption and sensing performances were successfully synthesized through the hydrothermal method, polymer coating, then thermal annealing process in nitrogen (N2) and lastly etching in hydrochloric acid (HCl). The morphologies and properties of the as-obtained Fe3O4@N-C nanocomposites were markedly affected by the etching time of HCl. When the Fe3O4@N-C nanocomposites after etching for 30 min (Fe3O4@N-C-3) were applied as the anodes for lithium-ion batteries (LIBs), the invertible capacity could reach 1772 mA h g−1 after 100 cycles at the current density of 0.2 A g−1, which is much better than that of Fe3O4@N-C nanocomposites etched, respectively, for 15 min and 45 min (948 mA h g−1 and 1127 mA h g−1). Additionally, the hollow porous Fe3O4@N-C-3 nanocomposites also exhibited superior rate capacity (950 mA h g−1 at 0.6 A g−1). The excellent electrochemical properties of Fe3O4@N-C nanocomposites are attributed to their distinctive hollow porous core-shell structure and appropriate N-doped carbon coating, which could provide high-efficiency transmission channels for ions/electrons, improve the structural stability and accommodate the volume variation in the repeated Li insertion/extraction procedure. In addition, the Fe3O4@N-C nanocomposites etched by HCl for different lengths of time, especially Fe3O4@N-C-3 nanocomposites, also show good performance as adsorbents for the removal of the organic dye (methyl orange, MO) and surface-enhanced Raman scattering (SERS) substrates for the determination of a pesticide (thiram). This work provides reference for the design and preparation of multifunctional materials with peculiar pore structure and uncomplicated composition.
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He, Hui, Xiaojun Liu, Yuchen Wu, Lanlin Qi, Jin Huang, Yan Zhou, Jiahao Zeng, Kemin Wang i Xiaoxiao He. "DNA Nanotechnology-Empowered Fluorescence Imaging of APE1 Activity". Chemistry 5, nr 3 (17.08.2023): 1815–31. http://dx.doi.org/10.3390/chemistry5030124.
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Apurinic/apyrimidinic endonuclease 1 (APE1), also known as redox factor-1 (Ref-1), is a multifunctional protein that exists widely in living organisms. It can specifically recognize and cleave the DNA in apurinic/apyrimidinic (AP) sites in the base excision repair (BER) pathway, as well as regulate the expression of genes to activate some transcription factors. The abnormal expression and disruptions in the biological functions of APE1 are linked to a number of diseases, including inflammation, immunodeficiency, and cancer. Hence, it is extremely desired to monitor the activity of APE1, acquiring a thorough understanding of the healing process of damaged DNA and making clinical diagnoses. Thanks to the advent of DNA nanotechnology, some nanodevices are used to image the activity of APE1 with great sensitivity and simplicity. In this review, we will summarize developments in DNA-nanotechnology-empowered fluorescence imaging in recent years for APE1 activity according to different types of DNA probes, which are classified into linear DNA probes, composite DNA nanomaterials, and three-dimensional (3D) DNA nanostructures. We also highlight the future research directions in the field of APE1 activity imaging.
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Burmatova, Anastasia, Artur Khannanov, Alexander Gerasimov, Klara Ignateva, Elena Khaldeeva, Arina Gorovaia, Airat Kiiamov, Vladimir Evtugyn i Marianna Kutyreva. "A Hyperbranched Polyol Process for Designing and Manufacturing Nontoxic Cobalt Nanocomposite". Polymers 15, nr 15 (30.07.2023): 3248. http://dx.doi.org/10.3390/polym15153248.
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A method for the design and synthesis of a metallopolymer composite (CoNP) based on cobalt nanoparticles using the hyperbranched polyol process was developed. It was shown that hyperbranched polyester polyols in a melted state can be both a reducing agent and a stabilizer of metal nanoparticles at the same time. The mechanism of oxidation of hyperbranched polyol was studied using diffuse reflectance IR spectroscopy. The process of oxidation of OH groups in G4-OH started from 90 °C and finished with the oxidation of aldehyde groups. The composition and properties of nanomaterials were determined with FT-IR and UV-Vis spectroscopy, Nanoparticle Tracking Analysis (NTA), thermogravimetric analysis (TG), powder X-ray diffraction (XRD), NMR relaxation, and in vitro biological tests. The cobalt-containing nanocomposite (CoNP) had a high colloidal stability and contained spheroid polymer aggregates with a diameter of 35–50 nm with immobilized cobalt nanoparticles of 5–7 nm. The values of R2 and R1 according to the NMR relaxation method for CoNPs were 6.77 mM·ms−1 × 10−5 and 4.14 mM·ms−1 × 10−5 for, respectively. The ratio R2/R1 = 0.61 defines the cobalt-containing nanocomposite as a T1 contrast agent. The synthesized CoNPs were nonhemotoxic (HC50 > 8 g/mL) multifunctional reagents and exhibited the properties of synthetic modulators of the enzymatic activity of chymosin aspartic proteinase and exhibited antimycotic activity against Aspergillus fumigatus. The results of the study show the unique prospects of the developed two-component method of the hyperbranched polyol process for the creation of colloidal multifunctional metal–polymer nanocomposites for theranostics.
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Chakraborthy, Aniket, Suresh Nuthalapati, Anindya Nag, Nasrin Afsarimanesh, Md Eshrat E. Alahi i Mehmet Ercan Altinsoy. "A Critical Review of the Use of Graphene-Based Gas Sensors". Chemosensors 10, nr 9 (1.09.2022): 355. http://dx.doi.org/10.3390/chemosensors10090355.
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The employment of graphene for multifunctional uses has been a cornerstone in sensing technology. Due to its excellent electrochemical properties, graphene has been used in its pure and composite forms to detect target molecules over a wide range of surfaces. The adsorption process on the graphene-based sensors has been studied in terms of the change in resistance and capacitance values for various industrial and environmental applications. This paper highlights the performance of graphene-based sensors for detecting different kinds of domestic and industrial gases. These graphene-based gas sensors have achieved enhanced output in terms of sensitivity and working range due to specific experimental parameters, such as elevated temperature, presence of particular gas-specific layers and integration with specific nanomaterials that assist with the adsorption of gases. The presented research work has been classified based on the physical nature of graphene used in conjugation with other processed materials. The detection of five different types of gases, including carbon dioxide (CO2), ammonia (NH3), hydrogen sulphide (H2S), nitrogen dioxide (NO2) and ethanol (C2H5OH) has been shown in the paper. The challenges of the current graphene-based gas sensors and their possible remedies have also been showcased in the paper.
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Arshad, Natasha, Muhammad Usman, Muhammad Adnan, Muhammad Tayyab Ahsan, Mah Rukh Rehman, Sofia Javed, Zeeshan Ali, Muhammad Aftab Akram, George P. Demopoulos i Asif Mahmood. "Nanoengineering of NiO/MnO2/GO Ternary Composite for Use in High-Energy Storage Asymmetric Supercapacitor and Oxygen Evolution Reaction (OER)". Nanomaterials 13, nr 1 (25.12.2022): 99. http://dx.doi.org/10.3390/nano13010099.
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Designing multifunctional nanomaterials for high performing electrochemical energy conversion and storage devices has been very challenging. A number of strategies have been reported to introduce multifunctionality in electrode/catalyst materials including alloying, doping, nanostructuring, compositing, etc. Here, we report the fabrication of a reduced graphene oxide (rGO)-based ternary composite NiO/MnO2/rGO (NMGO) having a range of active sites for enhanced electrochemical activity. The resultant sandwich structure consisted of a mesoporous backbone with NiO and MnO2 nanoparticles encapsulated between successive rGO layers, having different active sites in the form of Ni-, Mn-, and C-based species. The modified structure exhibited high conductivity owing to the presence of rGO, excellent charge storage capacity of 402 F·g−1 at a current density of 1 A·g−1, and stability with a capacitance retention of ~93% after 14,000 cycles. Moreover, the NMGO//MWCNT asymmetric device, assembled with NMGO and multi-wall carbon nanotubes (MWCNTs) as positive and negative electrodes, respectively, exhibited good energy density (28 Wh·kg−1), excellent power density (750 W·kg−1), and capacitance retention (88%) after 6000 cycles. To evaluate the multifunctionality of the modified nanostructure, the NMGO was also tested for its oxygen evolution reaction (OER) activity. The NMGO delivered a current density of 10 mA·cm−2 at the potential of 1.59 V versus RHE. These results clearly demonstrate high activity of the modified electrode with strong future potential.
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Rybarczyk, Maria K., Emilia Gontarek-Castro, Karolina Ollik i Marek Lieder. "Biomass-Derived Nitrogen Functionalized Carbon Nanodots and Their Anti-Biofouling Properties". Processes 9, nr 1 (29.12.2020): 61. http://dx.doi.org/10.3390/pr9010061.
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The prevalence of the antibiotic resistant bacteria remains a global issue. Cheap, sustainable and multifunctional antibacterial membranes are at the forefront of filtrating materials capable of treating multiple flow streams, such as water cleansing treatments. Carbon nanomaterials are particularly interesting objects shown to enhance antibacterial properties of composite materials. In this article, amino-functionalized, photoluminescent carbon nanodots (CNDs) were synthesized from chitosan by bottom-up approach via simple and green hydrothermal carbonization. A chemical model for the CNDs formation during hydrothermal treatment of chitosan is proposed. The use of urea as an additional nitrogen source leads to the consumption of hydroxyl groups of chitosan and higher nitrogen doping level as pyridinic and pyrrolic N-bonding configurations in the final carbonaceous composition. These functionalized carbon nanodots that consist of carbon core and various surface functional groups were used to modify the commercially available membranes in order to enhance their anti-biofouling properties and add possible functionalities, including fluorescent labelling. Incorporation of CNDs to membranes increased their hydrophilicity, surface charge without compromising membranes integrity, thereby increasing the factors affecting bacterial wall disruption. Membranes modified with CNDs effectively stopped the growth of two Gram-negative bacterial colonies: Klebsiella oxytoca (K. oxytoca) and Pseudomonas aeruginosa (P. aeruginosa).
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Zohra, Tanzeel, Ali Talha Khalil, Faryal Saeed, Bushra Latif, Muhammad Salman, Aamer Ikram, Muhammad Ayaz i H. C. Ananda Murthy. "Green Nano-Biotechnology: A New Sustainable Paradigm to Control Dengue Infection". Bioinorganic Chemistry and Applications 2022 (8.08.2022): 1–21. http://dx.doi.org/10.1155/2022/3994340.
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Dengue is a growing mosquito-borne viral disease prevalent in 128 countries, while 3.9 billion people are at high risk of acquiring the infection. With no specific treatment available, the only way to mitigate the risk of dengue infection is through controlling of vector, i.e., Aedes aegypti. Nanotechnology-based prevention strategies like biopesticides with nanoformulation are now getting popular for preventing dengue fever. Metal nanoparticles (NPs) synthesized by an eco-friendly process, through extracts of medicinal plants have indicated potential anti-dengue applications. Green synthesis of metal NPs is simple, cost-effective, and devoid of hazardous wastes. The recent progress in the phyto-synthesized multifunctional metal NPs for anti-dengue applications has encouraged us to review the available literature and mechanistic aspects of the dengue control using green-synthesized NPs. Furthermore, the molecular bases of the viral inhibition through NPs and the nontarget impacts or hazards with reference to the environmental integrity are discussed in depth. Till date, major focus has been on green synthesis of silver and gold NPs, which need further extension to other innovative composite nanomaterials. Further detailed mechanistic studies are required to critically evaluate the mechanistic insights during the synthesis of the biogenic NPs. Likewise, detailed analysis of the toxicological aspects of NPs and their long-term impact in the environment should be critically assessed.
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Parveen, Shama, Sohel Rana i Raul Fangueiro. "A Review on Nanomaterial Dispersion, Microstructure, and Mechanical Properties of Carbon Nanotube and Nanofiber Reinforced Cementitious Composites". Journal of Nanomaterials 2013 (2013): 1–19. http://dx.doi.org/10.1155/2013/710175.
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Excellent mechanical, thermal, and electrical properties of carbon nanotubes (CNTs) and nanofibers (CNFs) have motivated the development of advanced nanocomposites with outstanding and multifunctional properties. After achieving a considerable success in utilizing these unique materials in various polymeric matrices, recently tremendous interest is also being noticed on developing CNT and CNF reinforced cement-based composites. However, the problems related to nanomaterial dispersion also exist in case of cementitious composites, impairing successful transfer of nanomaterials' properties into the composites. Performance of cementitious composites also depends on their microstructure which is again strongly influenced by the presence of nanomaterials. In this context, the present paper reports a critical review of recent literature on the various strategies for dispersing CNTs and CNFs within cementitious matrices and the microstructure and mechanical properties of resulting nanocomposites.
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Magalhães, Marta I., i Ana P. C. Almeida. "Nature-Inspired Cellulose-Based Active Materials: From 2D to 4D". Applied Biosciences 2, nr 1 (15.03.2023): 94–114. http://dx.doi.org/10.3390/applbiosci2010009.
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Multifunctional materials and devices with captivating properties can be assembled from cellulose and cellulose-based composite materials combining functionality with structural performance. Cellulose is one of the most abundant renewable materials with captivating properties, such as mechanical robustness, biocompatibility, and biodegradability. Cellulose is a low-cost and abundant biodegradable resource, CO2 neutral, with a wide variety of fibers available all over the world. Over thousands of years, nature has perfected cellulose-based materials according to their needs, such as function vs. structure. Mimicking molecular structures at the nano-, micro-, and macroscales existing in nature is a great strategy to produce synthetic cellulose-based active materials. A concise background of cellulose and its structural organization, as well as the nomenclature of cellulose nanomaterials, are first addressed. Key examples of nature-designed materials with unique characteristics, such as “eternal” coloration and water-induced movement are presented. The production of biomimetic fiber and 2D fiber-based cellulosic materials that have attracted significant attention within the scientific community are represented. Nature-inspired materials with a focus on functionality and response to an external stimulus are reported. Some examples of 3D-printed cellulosic materials bioinspired, reported recently in the literature, are addressed. Finally, printed cellulosic materials that morph from a 1D strand or 2D surface into a 3D shape, in response to an external stimulus, are reported. The purpose of this review is to discuss the most recent developments in the field of “nature-inspired” cellulose-based active materials regarding design, manufacturing, and inspirational sources that feature existing tendencies.
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Perera, A. A. P. R., K. A. U. Madhushani, Buwanila T. Punchihewa, Anuj Kumar i Ram K. Gupta. "MXene-Based Nanomaterials for Multifunctional Applications". Materials 16, nr 3 (29.01.2023): 1138. http://dx.doi.org/10.3390/ma16031138.
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MXene is becoming a “rising star” material due to its versatility for a wide portfolio of applications, including electrochemical energy storage devices, electrocatalysis, sensors, biomedical applications, membranes, flexible and wearable devices, etc. As these applications promote increased interest in MXene research, summarizing the latest findings on this family of materials will help inform the scientific community. In this review, we first discuss the rapid evolutionary change in MXenes from the first reported M2XTx structure to the last reported M5X4Tx structure. The use of systematically modified synthesis routes, such as foreign atom intercalation, tuning precursor chemistry, etc., will be further discussed in the next section. Then, we review the applications of MXenes and their composites/hybrids for rapidly growing applications such as batteries, supercapacitors, electrocatalysts, sensors, biomedical, electromagnetic interference shielding, membranes, and flexible and wearable devices. More importantly, we notice that its excellent metallic conductivity with its hydrophilic nature distinguishes MXene from other materials, and its properties and applications can be further modified by surface functionalization. MXene composites/hybrids outperform pristine MXenes in many applications. In addition, a summary of the latest findings using MXene-based materials to overcome application-specific drawbacks is provided in the last few sections. We hope that the information provided in this review will help integrate lab-scale findings into commercially viable products.
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Elmekawy, Ahmed, Qui Quach i Tarek M. Abdel-Fattah. "Synthesis of a Novel Multifunctional Organic-Inorganic Nanocomposite for Metal Ions and Organic Dye Removals". ECS Meeting Abstracts MA2022-02, nr 8 (9.10.2022): 672. http://dx.doi.org/10.1149/ma2022-028672mtgabs.
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The pollution induced by the excessive use of heavy metal ions and organic matter in industrial operations results in direct and indirect discharge of pollutants into waterways, affecting human life and environment. For example, cobalt ions and radionuclide 60Co, 58Co, which are used in medicine, can be discharged into the environment during its manufacturing processes. Also, organic materials, such as phenolic components, carbohydrates, and so on, have a high toxicity to human. For example, methylene Blue (MB), ingestion of MB by humans can result in excessive perspiration, nausea, vomiting, neuronal apoptosis, burning sensations, and a variety of other harmful impacts on the body and surroundings. In our research group, nanomaterials have been extensively used in many research projects and applications such as catalysts, energy, photovoltaic, sensors, biomedical and environmental remediation [1-26]. In recent years, it has been discovered that a blend of nanoporous silicates such as Zeolite X (Ze) and activated carbon (AC) can minimize contaminants in waste water. Because activated carbons are often microporous and have large surface areas, they are particularly efficient at adsorbing low molecular weight compounds and larger molecules. The MB and Co(II) ions sorption capabilities of Ze-AC mixture and linked zeolite and activated carbon (Ze-L-AC) via disodium terephthalate linker. The resultant materials (Ze-L-AC composite and Ze-AC mixture) were characterized using Scanning electron microscopy (SEM), X-ray diffraction (XRD), and Fourier transform infrared spectrometry (FTIR) and Surface area measurements. Also, this study was focused on the adsorption of MB and Co(II) ions in aqueous media. The effects of pH, temperature, time, masses and ionic strength were monitored using absorption spectroscopy. Generally, the Ze-L-AC composite removed MB and Co ions greater than the Ze-AC mixture. For example, the adsorbent capacitance for MB removal was 37 mg/g for Ze-AC mixture and 40 mg/g for Ze-L-AC. Also, the adsorbent capacitance for Co(II) ions removal was 40 mg/g for Ze-AC mixture and 44 mg/g for Ze-L-AC. References C Huff, T Dushatinski, TM Abdel-Fattah, International Journal of Hydrogen Energy 42 (30), 18985-18990 (2017) M Stacey, C Osgood, BS Kalluri, W Cao, H Elsayed-Ali, T Abdel-Fattah, Biomedical Materials 6 (1), 011002 (2011) SE Mohmed Labeb, Abdel-Hamed Sakr, Moataz Soliman, Tarek M.Abdel-Fattah, Optical Materials 79, 331-335 (2018) ME Mahmoud, MM Osman, SB Ahmed, TM Abdel-Fattah, Chemical engineering journal 175, 84-94 (2011) TM Abdel-Fattah, ME Mahmoud, Chemical engineering journal 172 (1), 177-183 (2011) R Bhure, TM Abdel-Fattah, C Bonner, JC Hall, A Mahapatro, Journal of biomedical nanotechnology 6 (2), 117-128 (2010) TM Abdel-Fattah, D Loftis, A Mahapatro, Journal of biomedical nanotechnology 7 (6), 794-800 (2011) OH Elsayed-Ali, T Abdel-Fattah, HE Elsayed-Ali, Journal of hazardous materials 185 (2-3), 1550-1557 (2011) R Bhure, A Mahapatro, C Bonner, TM Abdel-Fattah, Materials Science and Engineering: C 33 (4), 2050-2058 (2013) BE Bishop, BA Savitzky, T Abdel-Fattah, Ecotoxicology and Environmental Safety 73 (4), 565-571 (2010) C Huff, JM Long, A Heyman, TM Abdel-Fattah, ACS Applied Energy Materials 1 (9), 4635-4640 (2018) TM Abdel-Fattah, EM Younes, G Namkoong, EM El-Maghraby, Synthetic Metals 209, 348-354 (2015) SH Lapidus, A Naik, A Wixtrom, NE Massa, V Ta Phuoc, L del Campo, Crystal growth & design 14 (1), 91-100 (2014) A Mahapatro, TD Matos Negrón, C Bonner, TM Abdel-Fattah, Journal of Biomaterials and Tissue Engineering 3 (2), 196-204 (2013) T Dushatinski, C Huff, TM Abdel-Fattah, Applied Surface Science 385, 282-288 (2016) ME Mahmoud, SS Haggag, MA Rafea, TM Abdel-Fattah, Polyhedron 28 (16), 3407-3414 (2009) C Huff, JM Long, A Aboulatta, A Heyman, TM Abdel-Fattah, ECS Journal of Solid State Science and Technology 6 (10), M115 (2017) ME Mahmoud, SS Haggag, TM Abdel-Fattah, Polyhedron 26 (14), 3956-3962 (2007) TM Abdel-Fattah, ME Mahmoud, MM Osmam, SB Ahmed, Journal of Environmental Science and health, part A 49 (9), 1064-1076 (2014) ME Mahmoud, TM Abdel-Fattah, MM Osman, SB Ahmed, Journal of Environmental Science and Health, Part A 47 (1), 130-141 (2012) K Foe, G Namkoong, TM Abdel-Fattah, H Baumgart, MS Jeong, DS Lee, Thin solid films 534, 76-82 (2013) M Abdel-Fattah, A Wixtrom, K Zhang, W Cao, H Baumgart, ECS Journal of Solid State Science and Technology 3 (10), M61 (2014) C Huff, T Dushatinski, A Barzanji, N Abdel-Fattah, K Barzanji, ECS Journal of Solid State Science and Technology 6 (5), M69 (2017) TM Abdel-Fattah, B Bishop, Journal of Environmental Science and Health, Part A 39 (11-12), 2855-2866 (2014) Quach, E. Biehler, A. Elzamzami, C. Huff, J.M. Long, T.M. Abdel Fattah, Catalysts, 11, 118 (2021). E. Biehler, Q. Quach, C. Huff, T. M. Abdel-Fattah, Materials, 15, 2692 (2022).
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Wu, Kai, Dingyao Liu, Feng Gong, Chuxin Lei i Qiang Fu. "Addressing the challenge of fabricating a high content regenerated cellulose/nanomaterial composite: the magical effect of urea". Green Chemistry 22, nr 13 (2020): 4121–27. http://dx.doi.org/10.1039/d0gc01539c.
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Ivanov, L. A., L. D. Xu, E. S. Bokova, A. D. Ishkov i S. R. Muminova. "Nanotechnologies: a review of inventions and utility models. Part V". Nanotechnologies in Construction A Scientific Internet-Journal 12, nr 6 (27.12.2020): 331–38. http://dx.doi.org/10.15828/2075-8545-2020-12-6-331-338.
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The article provides an abstract review of patents. The results of creative activity of scientists, engineers and specialists, including inventions in the field of nanotechnology and nanomaterials, being implemented, allow achieving a significant effect in construction, housing and community services, and related sectors of the economy. For example, the invention «A method to produce dry construction mixtures» refers to manufacturing of building materials, in particularly, to manufacture of dry construction mixtures (DCM) by the method of joint mechanoactivation of cement and dolomite, with further modification of them with carbon nanostructures (CNT). The technical result of the given method of mixing CNT and main component of dry construction mixtures - cement – is that it makes possible to use microquantities (0.005%) of CNT in DCM. That allows decreasing product cost of obtained mixture. Moreover, due to increased strength, faster hardening of materials one can reduce consumption of these mixtures. That is additional factor affecting decrease of mixture product cost. The results obtained after application of mechanoactivation of basic mixture components were different practically by all indicators from the mixtures prepared by simple mixing. Compression strength and tensile strength increased by 10–15%, adhesion strength increased too. Along with increasing of strength characteristics such an important indicator of DCM as air permeability has decreased. Reduction of total volume of pores in dense structure of cement matrix caused dramatic slow-up of moisture diffusion rate. The specialists can also be interested in the following inventions in the area of nanotechnologies: a method of laser building-up welding for metal coatings, high RAP in WMA surface mixture containing nanoglass fibers, a device to apply nanoparticles of metal oxides on metal surface under normal conditions, multifunctional nanostructured additive for coatings, experimental assessment of cement mortar using nanooxide compounds, a composition for setting constructional layers of road pavements, a method to obtain composite films of nanofibers, nano-engineering of construction materials using molecular dynamics simulations, cast and self-compacting concrete mixture for cast-in-situ concrete and prefabricated reinforced units, a method to obtain photocatalyst based on nanotubular titanium dioxide et al
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Díez-Pascual, Ana M., i Abbas Rahdar. "Composites of Vegetable Oil-Based Polymers and Carbon Nanomaterials". Macromol 1, nr 4 (1.12.2021): 276–92. http://dx.doi.org/10.3390/macromol1040019.
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Owed to current environmental concerns and crude oil price fluctuations, the design of feasible substitutes to petroleum-based polymeric materials is a major challenge. A lot of effort has been focused on transforming natural vegetable oils (VOs), which are inexpensive, abundant, and sustainable, into polymeric materials. Different nanofillers have been combined with these bio-based polymer matrices to improve their thermal, mechanical, and antibacterial properties. The development of multifunctional nanocomposites materials facilitates their application in novel areas such as sensors, medical devices, coatings, paints, adhesives, food packaging, and other industrial appliances. In this work, a brief description of current literature on polymeric nanocomposites from vegetable oils reinforced with carbon nanomaterials is provided, in terms of preparation, and properties. Different strategies to improve the nanomaterial state of dispersion within the biopolymer matrix are discussed, and a correlation between structure and properties is given. In particular, the mechanical, thermal, and electrical properties of these natural polymers can be considerably enhanced through the addition of small quantities of single-walled carbon nanotubes (SWCNTs), multi-walled carbon nanotubes (MWCNTs), graphene (G), or its derivatives such as graphene oxide (GO) or fullerenes (C60). Finally, some current and potential future applications of these materials in diverse fields are briefly discussed.
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Garanger, Elisabeth, Elena Aikawa, Fred Reynolds, Ralph Weissleder i Lee Josephson. "Simplified syntheses of complex multifunctional nanomaterials". Chemical Communications, nr 39 (2008): 4792. http://dx.doi.org/10.1039/b809537j.
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Gou, Ji Hua, Fei Liang, Yun Jun Xu i Bob Mabbott. "Multifunctional Non-Woven Carbon Nanopaper: Fabrication, Properties, and Applications". Applied Mechanics and Materials 423-426 (wrzesień 2013): 97–105. http://dx.doi.org/10.4028/www.scientific.net/amm.423-426.97.
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This paper presents a fundamental study of processing, morphologies, properties, and applications of a novel non-woven nanopaper based on carbon nanofibers (CNFs). Unique material formulations were developed to tailor the non-woven nanopaper to specific engineering applications. The non-woven nanopaper was made from a variety of nanomaterials (e.g. carbon nanotubes, carbon nanofibers, graphene, nanoclay, nickel nanostrands, POSS, etc.) with tailored nanostructures by precisely controlling composition, dispersion, functionalization, orientation, porosity, and thickness during the vacuum infiltration, pressure infiltration, or spray/infiltration process. The polymer matrix was impregnated into the stacked nanopapers to form multi-layered laminated composites. Such non-woven nanopaper based composites were designed and fabricated to achieve high energy dissipation capability for vibrational damping, high thermal conductivity and thermal stability for fire retardancy, ultra-high electrical conductivity and current-carrying capacity for lightning strike protection, and electro-actuation of shape memory polymer composites.
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Zhang, Li Qing, Su Fen Dong, Yun Yang Wang i Bao Guo Han. "Multifunctionalities of Nanocarbon Materials Filled Cement-Based Composites". Materials Science Forum 809-810 (grudzień 2014): 144–54. http://dx.doi.org/10.4028/www.scientific.net/msf.809-810.144.
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Materials combined with a small amount of nanomaterials offer new possibilities in developing of multifunctional composites. Nanocarbon materials (NCMs) such as carbon nanotubes/ nanofibres, and nanographite platelets have excellent intrinsic physical properties and improvement effect to matrix materials at nanoscale. They are promising fillers for improving the mechanical property and durability of cement-based materials and introducing functional properties to cement-based materials. This paper presents a comprehensive introduction about multifuntionlities of NCMs filled cement-based composites including mechanical properties, durability, electrical properties, thermal properties, electromagnetic properties, sensing property and etc.
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Jirak, Daniel, Jan Svoboda, Marcela Filipová, Ognen Pop-Georgievski i Ondrej Sedlacek. "Antifouling fluoropolymer-coated nanomaterials for 19F MRI". Chemical Communications 57, nr 38 (2021): 4718–21. http://dx.doi.org/10.1039/d1cc00642h.
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Zhong, Tuhua, Guoqing Jian, Zhen Chen, Michael Wolcott, Somayeh Nassiri i Carlos A. Fernandez. "Interfacial interactions and reinforcing mechanisms of cellulose and chitin nanomaterials and starch derivatives for cement and concrete strength and durability enhancement: A review". Nanotechnology Reviews 11, nr 1 (1.01.2022): 2673–713. http://dx.doi.org/10.1515/ntrev-2022-0149.
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Abstract Nanomaterials have been widely researched for use in construction materials. Numerous studies demonstrate that nanomaterials in small quantities can significantly improve the macroscopic properties of cement paste, mortar, or concrete through various mechanisms. Nanomaterials retrieved from biomass sources have recently gained particular research interest due to remarkable structural properties and the source material’s abundance and renewability. Cellulose and chitin are the most abundant polysaccharides in nature; thus, they are candidates for nanomaterials extraction as multifunctional additives in cementitious systems. In recent years, cellulose nanomaterials in cementitious composites have been extensively investigated, but chitin nanomaterials and starch derivatives for cement and concrete are still emerging research areas. This review article starts with an overview of polysaccharide nanomaterials’ (PNMs) physicochemical properties as a result of different chemical and mechanical extraction processes. Next a brief overview of cement hydration chemistry and microstructure and the interfacial interactions between the cement and the various surface chemical functionalities of PNMs are discussed. Then, the key mechanisms governing the cement strength enhancement by PNMs, such as bridging, nucleating and filling effect, and internal curing, are described. Finally, the impacts of PNMs on other properties of the cement are discussed.
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Li, Wengui, Wenkui Dong, Yipu Guo, Kejin Wang i Surendra P. Shah. "Advances in multifunctional cementitious composites with conductive carbon nanomaterials for smart infrastructure". Cement and Concrete Composites 128 (kwiecień 2022): 104454. http://dx.doi.org/10.1016/j.cemconcomp.2022.104454.
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Araujo, Andreia, Diogo Vale, Panagiotis-Nektarios Pappas, Nikos Koutroumanis i Raquel M. Santos. "Challenges and opportunities on nano-enabled multifunctional composites for aerostructures". MATEC Web of Conferences 304 (2019): 01007. http://dx.doi.org/10.1051/matecconf/201930401007.
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The incorporation of carbon-based nanomaterials in the polymeric matrix of carbon fibre reinforced polymer composites has recently received worldwide attention, aiming to enhance their performance and multifunctionality. In this work, different loadings of nanoparticles from the graphene family, including reduced graphene oxide (rGO) and graphene nanoplatelets (GNPs), were produced from graphite exfoliation. The mixing conditions for the production of epoxy-based suspensions were optimized using a three-roll mill, by changing the residence time and hydrodynamic shear stresses. The rheological behaviour, electrical conductivity and optical assessment were performed to study the influence of these nanoreinforcements on the resin properties. Afterwards, pristine and modified suspensions containing 0.089 wt. % of rGO or 2.14 wt. % of GNPs were used for manufacturing pre-impregnated materials with carbon fibre volume fractions of approximately 59 %. The nano-enabled CFRPs presented improved transverse electrical conductivity between 48 and 64 % when compared to the reference material. Significant enhancement of interlaminar fracture toughness (98.4 %) was found with GNPs.
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Ma, Xuan, Yangzi Zhang, Kunlun Huang, Longjiao Zhu i Wentao Xu. "Multifunctional rolling circle transcription-based nanomaterials for advanced drug delivery". Biomaterials 301 (październik 2023): 122241. http://dx.doi.org/10.1016/j.biomaterials.2023.122241.
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S, Jagadeep Chandra, i Sharath Chandra SP. "CONTEMPORARY SCENARIO OF BUTTERFLY INSPIRED TECHNOLOGICAL ENHANCEMENTS: MINI REVIEW". Journal of Experimental Biology and Agricultural Sciences 8, nr 5 (25.10.2020): 531–34. http://dx.doi.org/10.18006/2020.8(5).531.534.
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The present review discusses the Butterfly inspired impact on technology and its applications. This review article discusses the various concepts like nanocrystals on wings, natural photonic crystals (PhC) scaffolds, multifunctional biophotonic nanomaterials, creation of biomimetic nanostructured materials, aerodynamic analysis have been discussed. Different species of butterflies Chorinea faunus, Ideopsis similis, Danaus plexippus, D. eresimus, D. talbot and D. gilippus have been used as butterfly model systems. The review attempts to summarize the works done by various research groups with the butterfly as a model system. In conclusion butterfly as a whole, the color of wings, the aerodynamics, and the nanostructure composites inspire the development of many nanostructured composites and other technological enhancements.
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Glažar, Dominika, Ivan Jerman, Brigita Tomšič, Raghuraj Singh Chouhan i Barbara Simončič. "Emerging and Promising Multifunctional Nanomaterial for Textile Application Based on Graphitic Carbon Nitride Heterostructure Nanocomposites". Nanomaterials 13, nr 3 (19.01.2023): 408. http://dx.doi.org/10.3390/nano13030408.
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Nanocomposites constructed with heterostructures of graphitic carbon nitride (g-C3N4), silver (Ag), and titanium dioxide (TiO2) have emerged as promising nanomaterials for various environmental, energy, and clinical applications. In the field of textiles, Ag and TiO2 are already recognized as essential nanomaterials for the chemical surface and bulk modification of various textile materials, but the application of composites with g-C3N4 as a green and visible-light-active photocatalyst has not yet been fully established. This review provides an overview of the construction of Ag/g-C3N4, TiO2/g-C3N4, and Ag/TiO2/g-C3N4 heterostructures; the mechanisms of their photocatalytic activity; and the application of photocatalytic textile platforms in the photochemical activation of organic synthesis, energy generation, and the removal of various organic pollutants from water. Future prospects for the functionalization of textiles using g-C3N4-containing heterostructures with Ag and TiO2 are highlighted.
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Okamoto, Masami. "Polymer Nanocomposites". Eng 4, nr 1 (1.02.2023): 457–79. http://dx.doi.org/10.3390/eng4010028.
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In the last 20 years, there has been a strong emphasis on the development of polymer nanocomposites, where at least one of the dimensions of the filler material is of the order of a nanometer. Polymer nanocomposites are fundamentally different from traditional filled polymers because of the immense internal interfacial area and the nanoscopic nature of the nanomaterials. The new multifunctional properties derived from the nano-structure of nanocomposites provide an opportunity to circumvent the traditional properties associated with traditional composites. Numerous examples can be found in the literature that show significant improvements in multifunctional properties of the nanocomposites and this new class materials now being introduced in structural applications, such as gas barrier film, flame retardant product, and other load-bearing applications. This review offers a comprehensive review on the basic concept, technology and application for polymer nanocomposites.
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He, Xiaoxiao, Shiyue Chen i Xiang Mao. "Metal-Based Nanomaterials Incorporate with Ultrasound as Acceptable Approach towards Cancer Therapy". Journal of Biomedical Research & Environmental Sciences 2, nr 11 (grudzień 2021): 1101–10. http://dx.doi.org/10.37871/jbres1354.
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Among current biological researches, there have a plenty of works related cancer therapy issues by using functional or pure-phased composites in non-invasive strategies. Especially in fabricating anticancer candidates, functional composites are divided into different sorts with different characteristics. Additionally, nanotechnology provides various approaches in utilizing composites’ functionality for cancer diagnostics and therapeutics. Compared with previous Photodynamic Therapy (PDT), Photo-Thermal Therapy (PTT), chemotherapy and radiotherapy, ultrasound is used to activate sonosensitizer to produce cytotoxic Reactive Oxygen Species (ROS) toward target cancer cells. In recent years, the form of Sonodynamic Therapy (SDT) has been making much effort to develop highly efficient metal based Nanomaterials (NMs) as sonosensitizers, which can efficiently generate ROS and has the advantages of deeper tissue penetration. However, the traditional sonosensitizers, such as porphyrins, hypericin, and curcumins suffer from complex synthesis, poor water solubility, and low tumor targeting efficacy. For contrasting this limitation, the metal based inorganic NMs show biocompatibility, controllable physicochemical properties, and ease of achieving multifunctional properties, which greatly expanded their application in SDT. In this review, we systematically summarize the metal based inorganic NMs as carrier of molecular sonosensitizers, and produce ROS under ultrasound. Moreover, the prospects of advanced metal based further materials application are also discussed.
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Shamim, Arslan, Sajjad Ahmad, Anwar Khitab, Waqas Anwar, Rao Arsalan Khushnood i Muhammad Usman. "Applications of Nano Technology in Civil Engineering". International Journal of Strategic Engineering 1, nr 1 (styczeń 2018): 48–64. http://dx.doi.org/10.4018/ijose.2018010104.
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This article presents the recent trends in the field of civil engineering with an emphasis on the applications of nano materials and their beneficial effects at nano scale. The role and utilization of nanoparticles such as nano silica, carbon nano tubes, graphene, nano clays, nano CaCO3, nano TiO2, etc., is sharply increasing with the passage of time for achieving high performance composites. These nano materials not only enhance the mechanical properties of the resulting composites but also produce multifunctional characteristics. In this review, the authors have highlighted the various types of nanomaterials being used in the field of civil engineering and the performance improvements achieved by their utilization. Besides the potential benefits of Nano materials, they may pose some health and environmental concerns. A brief discussion is also provided on this issue.
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Fletcher, N. L., Z. H. Houston, J. D. Simpson, R. N. Veedu i K. J. Thurecht. "Designed multifunctional polymeric nanomedicines: long-term biodistribution and tumour accumulation of aptamer-targeted nanomaterials". Chemical Communications 54, nr 82 (2018): 11538–41. http://dx.doi.org/10.1039/c8cc05831h.
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We report a novel multifunctional hyperbranched polymer based on polyethylene glycol (PEG) as a nanomedicine platform that facilitates longitudinal and quantitative 89Zr-PET imaging, enhancing knowledge of nanomaterial biodistribution and pharmacokinetics/pharmacodynamics both in vivo and ex vivo.