Gotowe bibliografie tematyczne / Carbon-Dot Based Hybrid Nanomaterials

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Gotowa bibliografia na temat „Carbon-Dot Based Hybrid Nanomaterials”

Autor: Grafiati

Data publikacji: 7 września 2023

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Artykuły w czasopismach na temat "Carbon-Dot Based Hybrid Nanomaterials"

Her, Shiuh-Chuan, i Yuan-Ming Liang. "Carbon-Based Nanomaterials Thin Film Deposited on a Flexible Substrate for Strain Sensing Application". Sensors 22, nr 13 (4.07.2022): 5039. http://dx.doi.org/10.3390/s22135039.

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Hybrid nanomaterial film consisting of multi-walled carbon nanotubes (MWCNT) and graphene nanoplatelet (GNP) were deposited on a highly flexible polyimide (PI) substrate using spray gun. The hybridization between 2-D GNP and 1-D MWCNT reduces stacking among the nanomaterials and produces a thin film with a porous structure. Carbon-based nanomaterials of MWCNT and GNP with high electrical conductivity can be employed to detect the deformation and damage for structural health monitoring. The strain sensing capability of carbon-based hybrid nanomaterial film was evaluated by its piezoresistive behavior, which correlates the change of electrical resistance with the applied strain through a tensile test. The effects of weight ratio between MWCNT and GNP and the total amount of hybrid nanomaterials on the strain sensitivity of the nanomaterial thin film were investigated. Experimental results showed that both the electrical conductivity and strain sensitivity of the hybrid nanomaterial film increased with the increase of the GNP contents. The gauge factor used to characterize the strain sensitivity of the nanomaterial film increased from 7.75 to 24 as the GNP weight ratio increased from 0 wt.% to 100 wt.%. In this work, a simple, low cost, and easy to implement deposition process was proposed to prepare a highly flexible nanomaterial film. A high strain sensitivity with gauge factor of 24 was achieved for the nanomaterial thin film.

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Kumar, Vijay Bhooshan, Amit Kumar Sahu i Kota Bhanu Sankara Rao. "Development of Doped Carbon Quantum Dot-Based Nanomaterials for Lubricant Additive Applications". Lubricants 10, nr 7 (7.07.2022): 144. http://dx.doi.org/10.3390/lubricants10070144.

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The development of advanced lubricants is essential for the pursuit of energy efficiency and sustainable development. In order to improve the properties of lubricating fluids, high-performance lubricating additives are required. In recent research studies, carbon nanomaterials such as fullerenes, carbon nanotubes, and graphene have been examined as lubricating additives to water or oil. Lubricating oils are well known for the presence of additives, especially friction-reducers and anti-wear additives. As part of this work, we have studied the advancement in the research and development of carbon dot (CD)-based lubricant additives by presenting a number of several applications of CD-based additives. We have also highlighted the friction-reducing properties and anti-wear properties of CDs and their lubrication mechanism along with some challenges and future perspectives of CDs as an additive. CDs are carbon nanomaterials that are synthesized from single-atom-thick sheets containing a large number of oxygen-containing functional groups; they have gained increasing attention as friction-reducing and antiwear additives. CDs have gradually been revealed to have exceptional tribological properties, particularly acting as additives to lubricating base oils. In our final section, we discuss the main challenges, future research directions, and a number of suggestions for a complete functionalized or hybrid doped CD-based material.

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Semchuk, O. Yu, T. Gatti i S. Osella. "Carbon based hybrid nanomaterials: overview and challenges ahead". SURFACE 14(29) (30.12.2022): 78–94. http://dx.doi.org/10.15407/surface.2022.14.078.

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In recent years, many new materials have been developed and prepared to improve the performance of light-harvesting technologies and to develop new and attractive applications. The problem of stability of long-term operation of various optoelectronic devices based on organic materials, both conjugated polymers and small molecules of organic semiconductors (SMOSs), is becoming relevant now. One way to solve this problem is to use carbon nanostructures, such as carbon nanotubes and a large family of graphene-based materials, which have enhanced stability, in carefully designed nanohybrid or nanocomposite architectures that can be integrated into photosensitive layers and where their potential is not yet know fully disclosed. Recently, a new trend has been seen in this direction - the use of nanoscale materials for, first of all, the conversion of light into electricity. The main goal of this approach is to rationally design stable and highly efficient carbon-based hybrid nanomaterials for optoelectrical applications, namely light harvesting/electricity conversion, which can be implemented in real optoelectrical devices. In this review, we will discuss the theoretical and experimental foundations of the hybridization of carbon nanostructures (CNSs) with other materials to reveal new optoelectronic properties and provide an overview of existing examples in the literature that will predict interesting future perspectives for use in future devices.

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Howlader, Ashraful Hossain, Feng Li i Rongkun Zheng. "Carbon Nanomaterials for Halide Perovskites‐Based Hybrid Photodetectors". Advanced Materials Technologies 5, nr 12 (7.10.2020): 2000643. http://dx.doi.org/10.1002/admt.202000643.

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Plachá, Daniela, Alexandra Muñoz-Bonilla, Kateřina Škrlová, Coro Echeverria, Alberto Chiloeches, Martin Petr, Khalid Lafdi i Marta Fernández-García. "Antibacterial Character of Cationic Polymers Attached to Carbon-Based Nanomaterials". Nanomaterials 10, nr 6 (22.06.2020): 1218. http://dx.doi.org/10.3390/nano10061218.

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The preparation of hybrid polymeric systems based on carbon derivatives with a cationic polymer is described. The polymer used is a copolymer of a quaternizable methacrylic monomer with another dopamine-based monomer capable of anchoring to carbon compounds. Graphene oxide and graphene as well as hybrid polymeric systems were widely characterized by infrared, Raman and photoemission X-ray spectroscopies, electron scanning microscopy, zeta potential and thermal degradation. These allowed confirming the attachment of copolymer onto carbonaceous materials. Besides, the antimicrobial activity of hybrid polymeric systems was tested against Gram positive Staphylococcus aureus and Staphylococcus epidermidis and Gram negative Escherichia coli and Pseudomonas aeruginosa bacteria. The results showed the antibacterial character of these hybrid systems.

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Li, Haiqing, Sing I. Song, Ga Young Song i Il Kim. "Non-Covalently Functionalized Carbon Nanostructures for Synthesizing Carbon-Based Hybrid Nanomaterials". Journal of Nanoscience and Nanotechnology 14, nr 2 (1.02.2014): 1425–40. http://dx.doi.org/10.1166/jnn.2014.9048.

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Barrejón, Myriam, Luis M. Arellano, Francis D'Souza i Fernando Langa. "Bidirectional charge-transfer behavior in carbon-based hybrid nanomaterials". Nanoscale 11, nr 32 (2019): 14978–92. http://dx.doi.org/10.1039/c9nr04388h.

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This review highlights construction and study of molecular and supramolecular donor–acceptor constructs derived by linking photosensitizers to various nanocarbons in governing directional electron transfer.

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Laurila, Tomi, Sami Sainio i Miguel A. Caro. "Hybrid carbon based nanomaterials for electrochemical detection of biomolecules". Progress in Materials Science 88 (lipiec 2017): 499–594. http://dx.doi.org/10.1016/j.pmatsci.2017.04.012.

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Awan, Muhammad Maqbool Sadiq, Parviz Soroushian, Arshad Ali i Muhammad Yousaf Saqid Awan. "High-Performance Cementitious Matrix using Carbon Nanofibers". Indonesian Journal of Science and Technology 2, nr 1 (1.04.2017): 57. http://dx.doi.org/10.17509/ijost.v2i1.5989.

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Graphite nanomaterials would realize their reinforcement potential within cement-based materials when they are thoroughly dispersed and effectively bonded to cement hydrates. Thorough dispersion of graphite nanomaterials in the fresh cementitious matrix encounters challenges associated with the hydrophobic nature of nanomaterial surfaces and their strong tendency towards agglomeration via attractive van der Waals forces. Effective interfacial interactions with cement hydrates are further challenged by the relatively inert nature of nanomaterial surfaces. An experimental program was conducted with the objective of effectively utilizing both acid-oxidized and pristine carbon nanofibers towards reinforcement of high-performance cementitious pastes. Hybrid reinforcement systems comprising optimum volume fraction of carbon nanofibers and micro-scale fibers were also evaluated in cementitious matrices. The improvements in nanofiber dispersion and interfacial interactions resulting from acid-oxidation and use of proper dispersion techniques were found to bring about significant gains in the engineering properties of high-performance cementitious materials.

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Wang, Zhuqing, Shasha Wu, Jian Wang, Along Yu i Gang Wei. "Carbon Nanofiber-Based Functional Nanomaterials for Sensor Applications". Nanomaterials 9, nr 7 (22.07.2019): 1045. http://dx.doi.org/10.3390/nano9071045.

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Carbon nanofibers (CNFs) exhibit great potentials in the fields of materials science, biomedicine, tissue engineering, catalysis, energy, environmental science, and analytical science due to their unique physical and chemical properties. Usually, CNFs with flat, mesoporous, and porous surfaces can be synthesized by chemical vapor deposition and electrospinning techniques with subsequent chemical treatment. Meanwhile, the surfaces of CNFs are easy to modify with various materials to extend the applications of CNF-based hybrid nanomaterials in multiple fields. In this review, we focus on the design, synthesis, and sensor applications of CNF-based functional nanomaterials. The fabrication strategies of CNF-based functional nanomaterials by adding metallic nanoparticles (NPs), metal oxide NPs, alloy, silica, polymers, and others into CNFs are introduced and discussed. In addition, the sensor applications of CNF-based nanomaterials for detecting gas, strain, pressure, small molecule, and biomacromolecules are demonstrated in detail. This work will be beneficial for the readers to understand the strategies for fabricating various CNF-based nanomaterials, and explore new applications in energy, catalysis, and environmental science.

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Rozprawy doktorskie na temat "Carbon-Dot Based Hybrid Nanomaterials"

Yick, Samuel King Lok. "The fabrication and application of carbon nanotube-based hybrid nanomaterials". Phd thesis, University of Sydney, 2014. http://hdl.handle.net/2123/12501.

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The evolution of technology has reached a stage where the performances and dimension needed are outpacing what conventional materials can deliver. This has been made more acute with the further necessity of miniaturisation. Therefore, new materials which can overcome this bottleneck are required. Over the past few decades, it was found that when a material is reduced to the nanoscale, they can exhibit properties unparallel by their bulk counterparts. Therefore these nanomaterials poise as a promising candidate for future applications. Of the many nanomaterials, carbon nanotube (CNT) is among the most emblematic. CNT is a hollow one-dimensional structure comprising solely of carbon atoms. They are fascinating as they exhibit physical attributes which surpass many conventional materials and their nanoscale dimension allows greater flexibility in their deployments. However, the utilisation of CNTs is currently frustrated by a host of intrinsic and extrinsic factors. As a result, there are usually significant disparity between their predicted capability and real-world performance. Therefore, the practical application of CNTs remains unfeasible. The premise of this thesis is that by employing CNTs in conjunction with other materials, the hurdles which plague their utilisation may be overcome. Here, the concept of CNT-based hybrid nanomaterials is presented. This thesis demonstrates that by engineering complementary interaction between two materials, many challenges which hamper the utilisations of CNTs and other nanomaterials can indeed be negated. Furthermore, their synergistic interaction allows the performance of the CNT-based hybrid nanomaterials to be superior to their uncoupled precursors. Therefore, this could be a viable strategy to incorporating nanomaterials in a range of applications.

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Zhang, Rui. "Transition-metal-based composite and hybrid nanomaterials for catalytic applications". Doctoral thesis, Humboldt-Universität zu Berlin, 2018. http://dx.doi.org/10.18452/19224.

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In der Entwicklung von Technologien für die nachhaltige Erzeugung, Speicherung und Umwandlung von Energie werden Hochleistungskatalysatoren benötigt. Im Rahmen dieser Arbeit werden verschiedene Übergangsmetall-basierte Katalysatoren, namentlich TiO2/Kohlenstoff-Komposite, anorganisch-organische Hybridsysteme auf Basis von NiFe Phosphonaten sowie Ni Phosphide, synthetisiert, charakterisiert und hinsichtlich ihrer photo- und elektrokatalytischen Eigenschaften untersucht. Es wird gezeigt, dass die Grenzflächeneigenschaften der TiO2/C-Komposite signifikant durch die Gestaltung des Heizvorgangs während der Synthese beeinflusst werden. Insbesondere der Einsatz von Mikrowellenstrahlung vermag die Synthese von Kohlenstoff-basierten Materialien positiv zu beeinflussen. Schnelles Erwärmen führt zu stärkeren Wechselwirkungen zwischen Nanopartikeln und Kohlenstoff, einheitlicheren Beschichtungen und kleineren Partikeln mit schmaleren Partikelgrößenverteilungen, wodurch die photokatalytische Aktivität verbessert wird. Schichtartige, hybride NiFe-Phenylphosphonat-Materialien werden ausgehend in Benzylalkohol dargestellt und ihre Aktivität in der OER im basischen Milieu untersucht. Die Hybridpartikel werden in-situ in NiFe-Hydroxid Nanoschichten umgewandelt. Röntgenspektroskopische Untersuchungen deuten auf eine induzierte, teilweise verzerrte Koordinationsumgebung der Metallzentren im Katalysator hin. Die Kombination der synergistischen Effekte zwischen Ni und Fe mit den strukturellen Eigenschaften des Hybridmaterials ermöglicht einen effizienten Katalysator. Weiterhin werden Nickel-Phosphide durch die thermische Behandlung der Phenyl- oder Methylphosphonate des Nickels, welche Schichtstrukturen aufweisen, in H2(5%)/Ar-Atmosphäre synthetisiert. Ni12P5, Ni12P5-Ni2P und Ni2P Nanopartikel, die mit einer dünnen Schicht aus Kohlenstoffmaterial beschichtet sind, werden erhalten. Ni12P5-Ni2P und Ni2P Nanopartikel katalysieren die Wasserstoffentwicklungsreaktion (HER) im Sauren effektiv.
High-performance catalysts play a key role in the development of technologies for sustainable production, storage, and conversion of energy. In this thesis, transition-metal-based catalysts, including TiO2/carbon composites, hybrid organic-inorganic NiFe phosphonates, and Ni phosphides are synthesized, characterized, and investigated in photocatalytic or electrocatalytic reactions. TiO2 is frequently combined with carbon materials, such as reduced graphene oxide (rGO), to produce composites with improved properties. TiO2 is more efficiently stabilized at the surface of rGO than amorphous carbon. Rapid heating of the reaction mixture results in a stronger coupling between the nanoparticles and carbon, more uniform coatings, and smaller particles with narrower size distributions. The more efficient attachment of the oxide leads to better photocatalytic performance. Layered hybrid NiFe-phenylphosphonate compounds are synthesized in benzyl alcohol, and their oxygen evolution reaction (OER) performance in alkaline medium is investigated. The hybrid particles transformed in situ into NiFe hydroxide nanosheets. X-ray absorption spectroscopy measurements suggest the metal sites in the active catalyst inherited partly the distorted coordination. The combination of the synergistic effect between Ni and Fe with the structural properties of the hybrid results in an efficient catalyst that generates a current density of 10 mA cm-2 at an overpotential of 240 mV. Moreover, nickel phosphides are synthesized through thermal treatment under H2(5%)/Ar of layered nickel phenyl- or methylphosphonates that act as single-source precursors. Ni12P5, Ni12P5-Ni2P and Ni2P nanoparticles coated with a thin shell of carbonaceous material are produced. Ni12P5-Ni2P and Ni2P NPs efficiently catalyze the hydrogen evolution reaction (HER) in acidic medium. Co2P and CoP NPs are also synthesized following this method.

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Ezzedine, Mariam. "Fabrication of hierarchical hybrid nanostructured electrodes based on nanoparticles decorated carbon nanotubes for Li-Ion batteries". Thesis, Université Paris-Saclay (ComUE), 2017. http://www.theses.fr/2017SACLX105/document.

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Cette thèse est consacrée à la fabrication ascendante (bottom-up) de matériaux nanostructurés hybrides hiérarchisés à base de nanotubes de carbone alignés verticalement (VACNTs) décorés par des nanoparticules (NPs). En fonction de leur utilisation comme cathode ou anode, des nanoparticules de soufre (S) ou silicium (Si) ont été déposées. En raison de leur structure unique et de leurs propriétés électroniques, les VACNTs agissent comme une matrice de support et un excellent collecteur de courant, améliorant ainsi les voies de transport électroniques et ioniques. La nanostructuration et le contact du S avec un matériau hôte conducteur améliore sa conductivité, tandis que la nanostructuration du Si permet d'accommoder plus facilement les variations de volume pendant les réactions électrochimiques. Dans la première partie de la thèse, nous avons synthétisé des VACNTs par une méthode de dépôt chimique en phase vapeur (HF-CVD) directement sur des fines feuilles commerciales d'aluminium et de cuivre sans aucun prétraitement des substrats. Dans la deuxième partie, nous avons décoré les parois latérales des VACNTs avec différents matériaux d'électrode, dont des nanoparticules de S et de Si. Nous avons également déposé et caractérisé des nanoparticules de nickel (Ni) sur les VACNTs en tant que matériaux alternatifs pour l'électrode positive. Aucun additif conducteur ou aucun liant polymère n'a été ajouté à la composition d'électrode. La décoration des nanotubes de carbone a été effectuée par deux méthodes différentes: méthode humide par électrodéposition et méthode sèche (par dépôt physique en phase vapeur (PVD) ou par CVD). Les structures hybrides obtenues ont été testées électrochimiquement séparément dans une pile bouton contre une contre-électrode de lithium. A notre connaissance, il s'agit de la première étude de l'évaporation du soufre sur les VACNTs et de la structure résultante (appelée ici S@VACNTs). Des essais préliminaires sur les cathodes nanostructurées obtenues (S@VACNTs revêtus d'alumine ou de polyaniline) ont montré qu'il est possible d'atteindre une capacité spécifique proche de la capacité théorique du soufre. La capacité surfacique de S@VACNTs, avec une masse de S de 0.76 mg cm-2, à un régime C/20 atteint une capacité de 1.15 mAh cm-2 au premier cycle. Pour les anodes nanostructurées au silicium (Si@VACNTs), avec une masse de Si de 4.11 mg cm-2, on montre une excellente capacité surfacique de 12.6 mAh cm-2, valeur la plus élevée pour les anodes à base de silicium nanostructurées obtenues jusqu'à présent. Dans la dernière partie de la thèse, les électrodes nanostructurées fabriquées ont été assemblées afin de réaliser la batterie complète (Li2S/Si) et sa performance électrochimique a été testée. Les capacités surfaciques obtenues pour les électrodes nanostructurées de S et de Si ouvrent la voie à la réalisation d'une LIB à haute densité d'énergie, entièrement nanostructurée, et démontrent le grand potentiel du concept proposé à base d'électrodes nanostructurées hybrides hiérarchisées
This thesis is devoted to the bottom-up fabrication of hierarchical hybrid nanostructured materials based on active vertically aligned carbon nanotubes (VACNTs) decorated with nanoparticles (NPs). Owing to their unique structure and electronic properties, VACNTs act as a support matrix and an excellent current collector, and thus enhance the electronic and ionic transport pathways. The nanostructuration and the confinement of sulfur (S) in a conductive host material improve its conductivity, while the nanostructuration of silicon (Si) accommodates better the volume change during the electrochemical reactions. In the first part of the thesis, we have synthesized VACNTs by a hot filament chemical vapor deposition (HF-CVD) method directly over aluminum and copper commercial foils without any pretreatment of the substrates. In the second part, we have decorated the sidewalls and the surface of the VACNT carpets with various LIB's active electrode materials, including S and Si NPs. We have also deposited and characterized nickel (Ni) NPs on CNTs as alternative materials for the cathode electrode. No conductive additives or any polymer binder have been added to the electrode composition. The CNTs decoration has been done systematically through two different methods: wet method by electrodeposition and dry method by physical vapor deposition (PVD). The obtained hybrid structures have been electrochemically tested separately in a coin cell against a lithium counter-electrode. Regarding the S evaporationon VACNTs, and the S@VACNTs structure, these topics are investigated for the first time to the best of our knowledge.Preliminary tests on the obtained nanostructured cathodes (S@VACNTs coated with alumina or polyaniline) have shown that it is possible to attain a specific capacity close to S theoretical storage capacity. The surface capacity of S@VACNTs, with 0.76 mg cm-2 of S, at C/20 rate reaches 1.15 mAh cm-2 at the first cycle. For the nanostructured anodes Si@VACNTs, with 4.11 mg cm-2 of Si showed an excellent surface capacity of 12.6 mAh cm-2, the highest value for nanostructured silicon anodes obtained so far. In the last part of the thesis, the fabricated nanostructured electrodes have been assembled in a full battery (Li2S/Si) and its electrochemical performances experimentally tested. The high and well-balanced surface capacities obtained for S and Si nanostructured electrodes pave the way for realization of high energy density, all-nanostructured LIBs and demonstrate the large potentialities of the proposed hierarchical hybrid nanostructures' concept

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Kang, Chi Won. "Enhanced 3-Dimensional Carbon Nanotube Based Anodes for Li-ion Battery Applications". FIU Digital Commons, 2013. http://digitalcommons.fiu.edu/etd/955.

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A prototype 3-dimensional (3D) anode, based on multiwall carbon nanotubes (MWCNTs), for Li-ion batteries (LIBs), with potential use in Electric Vehicles (EVs) was investigated. The unique 3D design of the anode allowed much higher areal mass density of MWCNTs as active materials, resulting in more amount of Li+ ion intake, compared to that of a conventional 2D counterpart. Furthermore, 3D amorphous Si/MWCNTs hybrid structure offered enhancement in electrochemical response (specific capacity 549 mAhg-1). Also, an anode stack was fabricated to further increase the areal or volumetric mass density of MWCNTs. An areal mass density of the anode stack 34.9 mg/cm2 was attained, which is 1,342% higher than the value for a single layer 2.6 mg/cm2. Furthermore, the binder-assisted and hot-pressed anode stack yielded the average reversible, stable gravimetric and volumetric specific capacities of 213 mAhg-1 and 265 mAh/cm3, respectively (at 0.5C). Moreover, a large-scale patterned novel flexible 3D MWCNTs-graphene-polyethylene terephthalate (PET) anode structure was prepared. It generated a reversible specific capacity of 153 mAhg-1 at 0.17C and cycling stability of 130 mAhg-1 up to 50 cycles at 1.7C.

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Lesani, Pooria. "Novel Carbon Dot-Based Fluorescent Nanomaterials for Biosensing and Bioimaging". Thesis, The University of Sydney, 2022. https://hdl.handle.net/2123/27346.

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Carbon dots (CDs)-based nanoparticles have been extensively explored for biological applications in sensing and bioimaging. However, the major translational barriers to CDs for imaging and sensing applications include optimal synthetic strategies to obtain monodisperse CDs with tunable structural, electronic, and optical properties in order to achieve high-resolution deep-tissue imaging, intracellular detection, and sensing of metal ions with high sensitivity down to nanomolar levels. In this thesis we have presented the synthesis and development of a series of novel carbon dot based nanoprobes with unique photophysical and biological properties for bioimaging and biosensing applications. These properties include water dispersibility, superior photostability and thermal stability, high quantum yield, excellent two-photon excitability, ease in surface functionalization, rapid cellular uptake, good biocompatibility, rapid detection of targeted molecules with a low detection limit, and high-resolution bioimaging capability. The CD-based probes developed in this study were used for two-photon intensity-based and ratiometric exogenous and endogenous ferric ions sensing in living cells, single- and two-photon deep tissue imaging in synthetic scaffold and complex biological tissue, and two-photon ratiometric real-time intracellular pH monitoring in 3D environment. Furthermore, the influence of CDs synthetic and post-synthetic parameters on parameters on photophysical properties and biological behavior of CDs were comprehensively investigated.

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Costa, Rui dos Santos. "Design of Innovative Energy Storage Textile Devices using Hybrid Carbon-based Nanomaterials". Doctoral thesis, 2021. https://hdl.handle.net/10216/139523.

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Lin, Che Hsien, i 林哲賢. "Carbon-based hybrid nanomaterials for dye-sensitized solar cells and supercapacitors application". Thesis, 2017. http://ndltd.ncl.edu.tw/handle/m4u5a9.

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博士
國立清華大學
工程與系統科學系
105
Recently, the issue of energy crisis were raised the attention of which looking for developing new, clean, efficient, and sustainable resources of renewable energy, as well as new technologies associated with energy conversion and storage. For this end, green energy applications for energy generation (DSSCs) and energy storage devices (Supercapacitors) have been promising candidates for the energy requirement. In the first part of this thesis, we developed the directly synthesis of carbon nanotubes (CNTs) on FTO glass at low temperature via the low pressure chemical vapor deposition (LPCVD) method. The specimens were further underwent an electrochemical deposition process to decorate layed-MoS2 nano-catalyst and construct a 3D hybrid nanostructure as counter electrode (C.E.) materials for DSSCs. The DSSC assembled with MoS2/CNTs C.E. exhibiting the photoconversion efficiency value of 7.83 %, which was 9.5 % higher than that of the Pt film. Our findings demonstrated that the MoS2/CNTs hybrid nanostructure is a promising candidate for application as a highly efficient and low-cost C.E. material in Pt-free DSSCs. In the second part, we fabricated the full-carbon hybrid nanoarchitecture of carbon nanofibers/3D graphene (CNFs/3DG), this directly growth of binder-free CNFs/3DG hybrid nanoarchitecture provides strong adhesion to the substrate, low internal resistance, and excellently vertical and horizontal electron transmission ability for electron collection for supercapacitors application. In the third part, we provide an economic strategy of facile transition process of carbon nanomaterials surface from hydrophobic to hydrophilic by Ethanol-treatment process. Moreover, the CV-acid treatment further improve the ELDC by actived meso-/micro-pore structure at the electrode/electrolyte interface and introduced the pseudocapacitance by decorated surface oxygen-containing groups. This method remarkably enhanced the capacitance, energy density, and could be a promising candidate in high-performance supercapacitor applications.

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Pandit, Subrata. "Synthesis and Functionalization of Carbon and Sulfur-based Nanomaterials: Physical Properties and Molecular Recognition". Thesis, 2020. https://etd.iisc.ac.in/handle/2005/5152.

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In recent years carbon-based nanomaterials are growing rapidly in the field of science and technology, due to the tunable optical and physical properties such as electronic arrangement, photostability, flexibility and excellent biocompatibility. Considering, the emerging materials of carbon family such as graphene, graphene oxide (GO) and it derivative, carbon nanotube, fullerene, covalent organic framework (COF) carbon nitride (g-C3N4) and carbon dots (C-Dots) has been highlighted. Based on their structure and morphology, the carbon-based materials have received immense interest in the fields of catalysis, electronic, photonic devices, sensors, molecular recognition and biomedical applications. At the same time, it is also reported that the tunable size and shape of the materials (extended -conjugation, state of oxidation etc.) has shown significant attention in antibacterial activity, relative molar extinction coefficient and cellular internalization, molecular recognition etc. Hence this chapter has shortly provided the literature background of preparation and applications of carbon-based materials. Further information regarding synthesis of different type of carbon and sulfur-based luminescent materials and their functionalization are reported in the literature. Finally, a stack of literature reports towards the materials and biological applications such as biomolecular recognition, cellular imaging, sensing and stimuli responsive systems.

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Książki na temat "Carbon-Dot Based Hybrid Nanomaterials"

Narlikar, A. V., i Y. Y. Fu, red. Oxford Handbook of Nanoscience and Technology. Oxford University Press, 2017. http://dx.doi.org/10.1093/oxfordhb/9780199533060.001.0001.

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This volume highlights engineering and related developments in the field of nanoscience and technology, with a focus on frontal application areas like silicon nanotechnologies, spintronics, quantum dots, carbon nanotubes, and protein-based devices as well as various biomolecular, clinical and medical applications. Topics include: the role of computational sciences in Si nanotechnologies and devices; few-electron quantum-dot spintronics; spintronics with metallic nanowires; Si/SiGe heterostructures in nanoelectronics; nanoionics and its device applications; and molecular electronics based on self-assembled monolayers. The volume also explores the self-assembly strategy of nanomanufacturing of hybrid devices; templated carbon nanotubes and the use of their cavities for nanomaterial synthesis; nanocatalysis; bifunctional nanomaterials for the imaging and treatment of cancer; protein-based nanodevices; bioconjugated quantum dots for tumor molecular imaging and profiling; modulation design of plasmonics for diagnostic and drug screening; theory of hydrogen storage in nanoscale materials; nanolithography using molecular films and processing; and laser applications in nanotechnology. The volume concludes with an analysis of the various risks that arise when using nanomaterials.

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Oshiyama, Atsushi, i Susumu Okada. Roles of shape and space in electronic properties of carbon nanomaterials. Redaktorzy A. V. Narlikar i Y. Y. Fu. Oxford University Press, 2017. http://dx.doi.org/10.1093/oxfordhb/9780199533053.013.3.

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This article examines how internal space and boundary shapes affect the electronic properties of carbon nanomaterials by conducting total-energy electronic-structure calculations based on the density-functional theory. It first considers the existence of nanospace in carbon peapods before discussing boundaries in planar and tubular nanostructures. It also describes double-walled nanotubes, defects in carbon nanotubes, and hybrid structures of carbon nanotubes. Finally, it discusses the magnetic properties of zigzag-edged graphene ribbons and carbon nanotubes as well as the essential role of the edge state. The article shows that both space and peas (fullerenes) are decisive in electronic properties. In carbon peapods, nearly free-electron states occurring in the internal space hybridize with carbon orbitals and then make the peapod a new multicarrier system. The edge state belongs to a new class of electron states that is inherent to zigzag borders in hexagonally bonded networks.

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Hong, S., Y. K. Kwon, J. S. Ha, N. K. Lee, B. Kim i M. Sung. Self-assembly strategy of nanomanufacturing of hybrid devices. Redaktorzy A. V. Narlikar i Y. Y. Fu. Oxford University Press, 2017. http://dx.doi.org/10.1093/oxfordhb/9780199533060.013.10.

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This article considers the nanomanufacturing of hybrid devices using the self-assembly strategy. Hybrid devices utilize nanomaterials such as nanoparticles, organic molecules, carbon nanotubes (CNTs), and nanowires. Examples include CNT-based circuits and molecular electronics. However, a major stumbling block holding back the practical applications of hybrid systems can be a lack of a mass-production method for such devices. This article first describes the direct patterning of nanostructures by means of dip-pen nanolithography and microcontact printing before discussing the fabrication of nanostructures using directed assembly. It also examines the mechanism of various assembly processes ofnanostructures and concludes with an overview of the characteristics of self-assembled hybrid nanodevices.

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Carbon-Based Nanomaterials and Hybrids: Synthesis, Properties and Commercial Applications. Taylor & Francis Group, 2014.

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Fecht, Hans J., i Kai Brühne. Carbon-Based Nanomaterials and Hybrids: Synthesis, Properties, and Commercial Applications. Jenny Stanford Publishing, 2016.

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Części książek na temat "Carbon-Dot Based Hybrid Nanomaterials"

Mileeva, Zh A., I. L. Shabalin, D. K. Ross, V. A. Bogolepov, S. Yu Zaginaichenko, D. V. Schur, V. A. Begenev i Z. A. Matysina. "Carbon Nano/Microstructures for Hybrid Hydrogen Storage Based on Specially Treated Carbon Fibers". W Carbon Nanomaterials in Clean Energy Hydrogen Systems - II, 107–14. Dordrecht: Springer Netherlands, 2011. http://dx.doi.org/10.1007/978-94-007-0899-0_8.

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Kong, Ling Bing, Freddy Boey, Yizhong Huang, Zhichuan Jason Xu, Kun Zhou, Sean Li, Wenxiu Que, Hui Huang i Tianshu Zhang. "Graphene-Inorganic Hybrids (I)". W Carbon Nanomaterials Based on Graphene Nanosheets, 111–220. Boca Raton, FL : CRC Press, [2016]: CRC Press, 2017. http://dx.doi.org/10.1201/9781315370606-3.

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Kong, Ling Bing, Freddy Boey, Yizhong Huang, Zhichuan Jason Xu, Kun Zhou, Sean Li, Wenxiu Que, Hui Huang i Tianshu Zhang. "Graphene-Inorganic Hybrids (II)". W Carbon Nanomaterials Based on Graphene Nanosheets, 221–302. Boca Raton, FL : CRC Press, [2016]: CRC Press, 2017. http://dx.doi.org/10.1201/9781315370606-4.

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Mousavi, Seyyed Mojtaba, Khadije Yousefi, Seyyed Alireza Hashemi i Sonia Bahrani. "Hybrid Magnetic nanoparticles–Carbonaceous nanomaterials (carbon nanotube/graphene)". W Magnetic Nanoparticle-Based Hybrid Materials, 121–38. Elsevier, 2021. http://dx.doi.org/10.1016/b978-0-12-823688-8.00024-7.

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Lingamdinne, Lakshmi Prasanna, Janardhan Reddy Koduru, Rama Rao Karri, Nabisab Mujawar Mubarak, Adinarayana Reddy Somala i Maheswara Reddy Lebaka. "Prospective of hybrid carbon-based materials for environmental remediation". W Hybrid Nanomaterials for Sustainable Applications, 25–54. Elsevier, 2023. http://dx.doi.org/10.1016/b978-0-323-98371-6.00006-9.

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Kumar Sahoo, Prasanta, Chi-Ang Tseng, Yi-June Huang i Chuan-Pei Lee. "Carbon-Based Nanocomposite Materials for High-Performance Supercapacitors". W Novel Nanomaterials. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.95460.

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Lightweight, flexible, wearable, and portable electronic gadgets have drawn significant attention in modern electronics industry. To power these gadgets, great efforts have been made to develop highly efficient energy-storage equipment. Among various power sources, a supercapacitor, acting as a bridge between the conventional battery and electrolytic capacitor, has been considered a promising portable energy storage device because of its high power density, fast charge/discharge rate, adequate operational safety, and excellent working lifetime. Hybrid supercapacitors, which combine redox materials with carbon-based materials, exhibit tremendous potential to fulfill the requirement of practical applications. In this chapter, we will review recent reports focusing on composite materials (i.e. metal oxide, metal hydroxide, and metal dichalcogenide composited with carbon materials) for the application in supercapacitors. The conclusion and futuristic prospects and challenges of highly efficient supercapacitors are briefly discussed.

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Kadian, Sachin, Manjinder Singh i Gaurav Manik. "Graphene Based Hybrid Nanocomposites for Solar Cells". W Current and Future Developments in Nanomaterials and Carbon Nanotubes, 61–77. BENTHAM SCIENCE PUBLISHERS, 2022. http://dx.doi.org/10.2174/9789815050714122030007.

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Over the last few years, due to its exceptional two-dimensional (2D) structure, graphene has played a key role in developing conductive transparent devices and acquired significant attention from scientists to get placed as a boon material in the energy industry. Graphene-based materials have played several roles, including interfacial buffer layers, electron/hole transport material, and transparent electrodes in photovoltaic devices. Apart from charge extraction and electron transportation, graphene protects the photovoltaic devices from atmospheric degradation through its 2D network and offers long-term air or environmental stability. This chapter focuses on the recent advancements in graphene and its nanocomposites-based solar cell devices, including dye-sensitized solar cells (DSSCs), organic solar cells (OSCs), and perovskite solar cells (PSCs). We further discuss the impact of incorporating graphene based materials on the power conversion efficiency for each type of solar cell. The last section of this chapter highlights the potential challenges and future research scope of graphene-based nanocomposites for solar cell applications.

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Dutta, Sayan Deb, Dinesh K. Patel i Ki-Taek Lim. "Carbon nanotube-based nanohybrids for agricultural and biological applications". W Multifunctional Hybrid Nanomaterials for Sustainable Agri-Food and Ecosystems, 505–35. Elsevier, 2020. http://dx.doi.org/10.1016/b978-0-12-821354-4.00021-2.

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"Carbon Polymer Supports Hybrid for Alcohol Oxidation". W Alcohol Fuel Cells, Direct Methanol Fuel Cells, Alcohol Oxidation, Nano-Catalysts, Carbon-Based Nanomaterials, Polymer Electrolyte Membranes, Nanomaterials for Oxygen Reduction, Polymer-based Nanocomposites, Electrocatalysts, Ethanol Electro-Oxidation, Proton Electrolyte Membranes, Methanol Oxidation, Polymer-based Nanocomposites, Trimetallic Nanoparticles., 177–92. Materials Research Forum LLC, 2019. http://dx.doi.org/10.21741/9781644900192-6.

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Vaishnav, Vikash Kumar, Khageshwar Prasad, Rashmi Yadav, Amitabh Aharwar i Bhupendra Nath Tiwary. "Graphene-Based Nanomaterials and Their Sensing Application". W Recent Advances in Biosensor Technology, 45–77. BENTHAM SCIENCE PUBLISHERS, 2023. http://dx.doi.org/10.2174/9789815123739123010006.

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Carbon-based materials (CBMs) like graphene, hybrid graphene compounds (HCOGs), graphene nanoplatelets (GNPs), graphene oxide (GO), reduced graphene oxide (RGO), and graphene quantum dots (GQDs), as well as their derivatives like graphane, graphone, graphyne, graphdiyne, and fluorographene, are the direct descendants of graphene-based nanomaterials (GBNs). GBNs are graphene derivatives with single and multilayered graphene products. Their doped versions have marked remarkable significance over the past decade in scientific fields for applications due to their physical as well as their chemical properties. Graphene has emerged as a promising application for sensing, gas separation, water purification, biotechnology, disease diagnosis, bioengineering, and biomedicine. Graphene nanomaterials also play an important role in surface engineering (bioconjugation), improving their performance in vitro/in vivo stability and elevating the functionality of graphene-based nanomaterials, which can enable single/multimodality image optical imaging, positron emission tomography, magnetic resonance imaging and therapy photothermal therapy, photodynamic therapy, and drug/ gene delivery in cancer. Graphene nanoparticles have the natural fluorescence properties of graphene, which helps to bioimage cancer cells. They are perspective drug carriers appropriate for their target selectivity, easy chemosensitization, functionalization, and excellent drug-loading capacity. Iron-based graphene composites are with other companionable materials of exploration to make novel hybrid complexes with preferred uniqueness for biointerfacing.

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Streszczenia konferencji na temat "Carbon-Dot Based Hybrid Nanomaterials"

Farooq, Shah Zaib, T. G. Kil i Haeng Ki Lee. "Heat-dependent electrical characteristics of CNT-based hybrid cementitious composites: Literature review". W IABSE Conference, Seoul 2020: Risk Intelligence of Infrastructures. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2020. http://dx.doi.org/10.2749/seoul.2020.237.

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<p>In recent years, many researchers have worked on the development of cementitious composites as self-heating components. To meet the requirements of self-heating composites, carbon-based nanomaterials have been considered as an electrically conductive filler in the cementitious matrix because of their excellent electrical and thermal characteristics. Most researches have focused on the heating performances of the CNT-incorporated hybrid cementitious composites, while fewer efforts were given to observe heat-dependent electrical characteristics of the modified cementitious composites under self-heating condition. In this regard, this paper summarizes recent studies in literature conducted to investigate heat-dependent electrical characteristics of cementitious composites with carbon-based nanomaterials.</p>

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Jiang, Zhangfan, Osman E. Ozbulut i Guohua Xing. "Self-Sensing Characterization of GNP and Carbon Black Filled Cementitious Composites". W ASME 2019 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/smasis2019-5653.

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Abstract Over the past decades, a number of structural health monitoring methods have been developed for condition assessment of concrete structures. Most of these methods require the installation of external sensors. Accelerometers are commonly used for vibration-based damage detection for the entire structure, while strain gauges are installed in order to detect cracking and damage at the component level. Conventional strain sensors, such as metal foil strain gauges, have been widely used to monitor local conditions in concrete structures. However, all of these sensors have certain shortcomings such as exhibiting limited durability and low gauge factor, and providing only pointwise strain measurements. Multifunctional cement-based composites that can determine their own strain and damage can overcome the limitations of these traditional sensors. This study explores the use of two different nanomaterials, namely graphene nanoplatelets (GNP) and carbon black (CB) for the development of self-sensing cementitious composites and the synergetic effects in their hybrid utilization. A simple fabrication method that does not require special treating procedures such as ultrasonication for dispersing nanomaterials is pursued. Twelve batches of mortar specimens reinforced with only GNP or CB at different concentrations, or with both GNP and CB fillers are prepared. A polycarboxylate-based superplasticizer is used to disperse nanomaterials and to increase the workability of the nano-reinforced mortar. Scanning electron microscope (SEM) is utilized to assess the distribution quality of nanomaterials. Standard cubic specimens are tested for compressive strength at 28 days. The bulk resistivity of the standard prismatic specimens is measured using the four-point probe method. The piezoresistive response of nano-reinforced cement composites is evaluated under the cyclic compressive loads.

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Fomo Fondjo, Fabrice, i Jong-Hoon Kim. "Hybrid Nanocomposite Membrane for Wearable Bioelectronics". W ASME 2017 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/imece2017-72339.

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There are strong needs for flexible and stretchable devices for the seamless integration with soft and curvilinear human skin or irregular textured cloths. However, the mechanical mismatch between the conventional rigid electronics and the soft human body results in many issues including contact breakage, or skin irritation. Due to the mechanical and electrical versatility of nanoscale forms, various nanomaterials have rapidly established themselves as promising electronic materials, replacing rigid wafer-based electronics in next-generation wearable devices. Here, we introduce a flexible, wearable bioelectronic system using an elastomeric hybrid nanocomposite, composed of zero-dimensional Carbon Black (CB) and one-dimensional Carbon Nanotubes (CNTs) and silver nanowires (AgNWs) in a polydimethylsiloxane (PDMS) matrix. Those materials were chosen due to their good electrical properties and their different length scale providing a continuous connection in the flexible PDMS matrix. To achieve a homogeneous dispersion, these nanomaterials were mechanically mixed in PDMS under shear flow using an overhead mixer. A hybrid nanocomposite membrane with dimensions of 15 mm diameter was then prepared by replica molding process. The electrical properties of the nanocomposite were measured over 5, 10 and 15hrs mixing time to investigate the point of electrical stability of the electrode and the electrical performance during EMG signal measurement. This soft nanocomposite, laminated on the skin, enables highly sensitive recording of electromyograms.

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Skandani, Amir Alipour, Ayoub Yari Boroujeni i Marwan Al-Haik. "Temperature Dependent Viscoelastic Behavior of FRP/ZnO Nano-Rods Hybrid Nanocomposites". W ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-63326.

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The inclusion of nanomaterials within fiber reinforced plastics (FRPs) could improve their resistance against time dependent deformation. Conceivable high temperature applications of such hybrid composites make it crucial to investigate their temperature-dependent properties as well as their durability. In this study, zinc oxide (ZnO) nano rods were grown on the surface of carbon fibers and the hybridized reinforcement was formed in a laminate composites. The viscoelastic behavior was probed utilizing dynamic mechanical analysis (DMA). The time/temperature superposition principle (TTSP) was invoked to obtain the viscoelastic properties of FRPs based on fibers with different surface treatments. Results indicated that the presence of ZnO nano rods at the interface between the carbon fibers and the epoxy matrix enhances the composite’s creep resistance at elevated temperatures and prolonged duration.

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Jlassi, Khouloud. "Rational Synthesis, Characterization, and Application of Environmentally‐Friendly (Polymer‐Carbon Dot) Hybrid Composite Film for Fast and Efficient UV Assisted Cd2+ removal from water". W Qatar University Annual Research Forum & Exhibition. Qatar University Press, 2020. http://dx.doi.org/10.29117/quarfe.2020.0040.

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Carbon-dots (CDs) are of particular interest in numerous applications. However, their efficiency for heavy metal removal from wastewater was not yet reported. Herein, we rationally synthesized CDs from petroleum-coke-waste via hydrothermal treatment in the presence of ammonia.This drove the formation of outstanding photoluminescent, water-soluble, biocompatible, and high yield of monodispersed sub-5 nm CDs. The CDs are co-doped with high 10 % of N and 0.2 % of S. The as-prepared CDs possess unprecedented photoluminescent properties over broad pH range making these dots unique efficient pH sensors. Chitosan (CH)-CDs hybrid hydrogel nanocomposite film was further prepared as a platform membrane for the removal of Cd2+ metal from wastewater. The prepared CH-CDs membranes show a relatively good mechanical properties, based on stressresistantance and flexibility in order to facilitate handling. The equilibrium state was reached within 5 minutes. Intriguingly, the UV-light illuminations enhanced the Cd2+ removal efficiency of the photoluminescent CDs substantially by four times faster. It was found that adsorption followed pseudo-second-order kinetic and Langmuir isotherm models. The maximum adsorption capacity at 25̊ C was found to be 112.4 mg g-1 at pH 8. This work paves the way to new applications of CDs in water treatment.

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