Tesis sobre el tema "Biomedical Applications - Carbon Based Nanomaterials"
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Ge, Haobo. "New functionalised carbon based nanomaterials for biomedical imaging applications". Thesis, University of Bath, 2015. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.681050.
Texto completoLi, Tinghui. "Fullerene Based Nanomaterials for Biomedical Applications". Diss., Virginia Tech, 2018. http://hdl.handle.net/10919/91439.
Texto completoPHD
Spear, Rose Louis. "Peptide functionalisation of carbon nanomaterials for biomedical applications". Thesis, University of Cambridge, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.609475.
Texto completoZhang, Jianfei. "The Preparation, Functionalization and Biomedical Applications of Carbonaceous Nanomaterials". Diss., Virginia Tech, 2011. http://hdl.handle.net/10919/77361.
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Roth, Kristina L. "Development of Metal-based Nanomaterials for Biomedical Applications". Diss., Virginia Tech, 2017. http://hdl.handle.net/10919/85365.
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Wang, Ling. "Syntheses and applications of bisphosphonate-based biomaterials and nanomaterials /". View abstract or full-text, 2007. http://library.ust.hk/cgi/db/thesis.pl?CHEM%202007%20WANG.
Texto completoLi, Yibing. "Graphitic Carbon-Based Functional Nanomaterials for Environmental Remediation and Energy Conversion Applications". Thesis, Griffith University, 2015. http://hdl.handle.net/10072/366091.
Texto completoThesis (PhD Doctorate)
Doctor of Philosophy (PhD)
Griffith School of Environment
Science, Environment, Engineering and Technology
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Filipiak, Marcin Szymon [Verfasser] y Jana [Akademischer Betreuer] Zaumseil. "Carbon based nanomaterials for biosensing applications / Marcin Szymon Filipiak ; Betreuer: Jana Zaumseil". Heidelberg : Universitätsbibliothek Heidelberg, 2019. http://d-nb.info/1191760545/34.
Texto completoFrizera, Borghi Fabricio. "Fabrication And Biological Applications Of Graphene-Based Nanostructures". Thesis, The University of Sydney, 2016. http://hdl.handle.net/2123/15657.
Texto completoHowlader, Ashraful Hossain. "Morphology Engineering of Sn-Based All-Inorganic Perovskite Films for Photodetector Applications". Thesis, The University of Sydney, 2021. https://hdl.handle.net/2123/27282.
Texto completoWeber, Jessica Eileen. "Functional Nanomaterials with an Electrochemistry-Based Approach to Sensing and Energy Applications". Scholar Commons, 2010. https://scholarcommons.usf.edu/etd/1804.
Texto completoZhang, 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.
Texto completoHigh-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.
PORRELLI, DAVIDE. "Nanocomposite systems based on polysaccharides and organic/inorganic nanostructures for biomedical applications". Doctoral thesis, Università degli Studi di Trieste, 2016. http://hdl.handle.net/11368/2907992.
Texto completoKang, Chi Won. "Enhanced 3-Dimensional Carbon Nanotube Based Anodes for Li-ion Battery Applications". FIU Digital Commons, 2013. http://digitalcommons.fiu.edu/etd/955.
Texto completoGunathilake, Chamila Asanka. "SOFT-TEMPLATING SYNTHESIS OF MESOPOROUS SILICA-BASED MATERIALS FOR ENVIRONMENTAL APPLICATIONS". Kent State University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=kent1471543020.
Texto completo"Functionalization of carbon nanomaterials for biomedical and nanocomposite applications". Thesis, 2010. http://hdl.handle.net/1911/62126.
Texto completoGoodarzi, S., Ros T. Da, J. Conde, Farshid Sefat y M. Mozafari. "Fullerene: biomedical engineers get to revisit an old friend". 2017. http://hdl.handle.net/10454/17023.
Texto completoIn 1985, the serendipitous discovery of fullerene triggered the research of carbon structures into the world of symmetric nanomaterials. Consequently, Robert F. Curl, Harold W. Kroto and Richard E. Smalley were awarded the Noble prize in chemistry for their discovery of the buckminsterfullerene (C60 with a cage-like fused-ring structure). Fullerene, as the first symmetric nanostructure in carbon nanomaterials family, opened up new perspectives in nanomaterials field leading to discovery and research on other symmetric carbon nanomaterials like carbon nanotubes and two-dimensional graphene which put fullerenes in the shade, while fullerene as the most symmetrical molecule in the world with incredible properties deserves more attention in nanomaterials studies. Buckyball with its unique structure consisting of sp2 carbons which form a high symmetric cage with different sizes (C60, C70 and so on); however, the most abundant among them is C60 which possesses 60 carbon atoms. The combination of unique properties of this molecule extends its applications in divergent areas of science, especially those related to biomedical engineering. This review aims to be a comprehensive review with a broad interest to the biomedical engineering community, being a substantial overview of the most recent advances on fullerenes in biomedical applications that have not been exhaustively and critically reviewed in the past few years.
Kuznetsov, Oleksandr. "Functionalization of Nanocarbons for Composite, Biomedical and Sensor Applications". Thesis, 2012. http://hdl.handle.net/1911/71665.
Texto completoCheng, Cheng-En y 鄭承恩. "Applications of Carbon-Based Nanomaterials as Counter Electrodes for Dye-Sensitized Solar Cells". Thesis, 2015. http://ndltd.ncl.edu.tw/handle/52243073546047030282.
Texto completo國立交通大學
光電工程研究所
104
In the thesis, carbon-based nanomaterials are applied to the counter electrodes (CEs) for dye-sensitized solar cells (DSCs) to reduce the consumption of Pt. The applied carbon-based nanomaterials to CEs include graphene, graphene oxide (GO), and buckypaper (BP). Because of storage limitation of Pt, the cost of DSC manufacturing is increasing. Carbon is an abundant element in the Earth’s crust, and carbon-based nanomaterials have lots of excellent electrical, optical, and electrochemical properties. They exhibit great potential to reduce the Pt consumption in DSCs. In addition to developments of low Pt-loading CE with carbon-based material, the photovoltaic performance and charge dynamics of DSCs with graphene, GO and BP-incorporated CEs are investigate to understand the influences of these carbon-based nanomaterials. The Pt-C composite can reduce the contact resistance of Pt/fluorine-doped tin oxide (FTO) interface, resulting in the enhancements of short-circuit current density and power conversion efficiency of DSC with Pt/few-layer graphene CE (DSCPt/FLG). Solution-processable GO provides a low-cost method to prepare large-quantity and high-transparent carbon source. Pt/GO composites are developed as the high-transparent and high-efficient CEs for bifacial DSCs. DSCPt/GO exhibits the better bifacial photovoltaic behaviors because of the outperformed PCE under rear illumination, attributing to the efficient I3- reduction ability of Pt/GO composite. The solution-processable BP is fabricated with entangled multi-walled carbon nanotubes, providing extreme electroactive surface area for I3- reduction. BPs can increase the I3- reduction rate at CE and suppress the charge recombination at photo-anodes. By applying BP, the DSCBP present a comparable performance to DSCPt, and the Pt-free DSCs are achieved. Accordingly, by applications of graphene, GO, and BP, the Pt consumption in DSCs can be reduced by 75%, 80%, and 100%, respectively. According the experimental results, it is found that the electrocatalytic ability and dimension of carbon-based nanomaterials are important. The naturals of carbon-based nanomaterials lead to the worse electrocatalytic ability to I3- reduction. Therefore, the dimension of CEs becomes critical. The 3-dimensional BP demonstrates the large electroactive surface area can compensate the degradation of electrocatalytic ability, which results in the comparable performance to DSCPt. On the other hand, the low-cost CE manufacturing with inexpensive material can be realized by the solution-processable GO and BP, whereas the complex manufacturing is required to synthesize graphene. Pt consumption is a foreseeable cost issue in DSC deployments. This research demonstrates that carbon-based nanomaterials are the potential materials to reduce Pt consumption in DSCs.
Thirumalraj, Balamurugan y Balamurugan Thirumalraj. "Influence of Gold Nanoparticles Supported Carbon Based Nanomaterials for Electrochemical Sensor and Biosensor Applications". Thesis, 2017. http://ndltd.ncl.edu.tw/handle/ek38k3.
Texto completo國立臺北科技大學
能源與光電材料國際學生研究所
105
Gold nanoparticles (AuNPs) play a key role in nanotechnology and provide the opportunities for development of a new generation of sensing tools. Besides, the carbon based nanomaterials have attracted tremendous interest in recent years due to its unique electrical, mechanical, chemical and optical properties. These materials are also considered as an ideal matrix for the development of highly sensitive and selective electrochemical sensors and biosensors. This thesis focus on the different synthesis of AuNPs supported carbon based nanomaterials for various sensor and biosensor applications. Mainly, the reduced graphene oxide (RGO) and fullerene (C60) have been utilized as the carbonaceous supporting materials. All materials were characterized by means of various analytical techniques such as scanning electron microscope (SEM), Field emission scanning electron microscope (FESEM), Energy-Dispersive X-Ray Spectroscopy (EDX), Transmission electron microscope (TEM), Atomic-force microscope (AFM), UV-vis spectroscopy, Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy, X-ray diffraction patterns (XRD). The photochemical synthesis of gelatin stabilized gold nanoparticles (GEL-AuNPs) has been employed for the optical spectral activity and electrochemical detection of quercetin (QR). The optical spectral activity of QR, the GEL-AuNPs composite showed a decrease in the absorbance and enhancement in fluorescence region of QR. The spectral activity changes of QR may be caused by the hydrogen bonding formation between amine groups in GEL-AuNPs and –OH and/or carbonyl groups in QR. Moreover, the GEL-AuNPs composite exhibited an excellent electrocatalytic activity towards the detection of QR. To increasing the optical activity of GEL-AuNPs, it was hybrid with RGO by one-pot hydrothermal method. The as-prepared GEL-AuNPs/RGO was demonstrated towards the fluorescence sensing and bioimaging of L-cysteine in live cancer cells, MKN-45 (gastric carcinoma), Colo-205 (colorectal adenocarcinoma) and HCT-116 (colorectal carcinoma). Besides the optical activity, the RGO/AuNPs revealed better electrocatalytic activity thus the RGO was functionalized with phenolic acids to enhance the electrochemical behavior. The hydrothermal method was employed to prepare the gallic acid supported RGO encapsulated AuNPs (GA-RGO/AuNPs). Further, this composite was applied to the detection of dopamine (DA) that showed an excellent electrocatalytic activity towards the oxidation of DA. Instead of GA, the Hemin (HN) was utilized to create the biocatalytic active site in RGO/AuNPs surface. Interestingly, the HN-RGO/AuNPs revealed the direct electrochemistry and excellent electrocatalytic activity towards the detection of hydrogen peroxide (H2O2). Finally, the activated fullerene (AC60) was used to restore the efficiency of RGO, thus, AC60/AuNPs was prepared by a simple and cost effective electrochemical approach. The fabricated AC60/AuNPs showed an excellent electrocatalytic activity towards the detection of hydrazine.
Magallanes, Nerea Seoane. "Evaluation of new carbon-coating methods for the development of magnetic nanoparticles targeted for biomedical applications". Master's thesis, 2021. http://hdl.handle.net/10198/25290.
Texto completoNanoscience has recently experienced a strong development, Magnetic Nanoparticles (MNPs) are one of the most attractive nanomaterials. Focusing on the biomedical applications, this thesis has as main objective the development of new carbon coating methods in order to reach the maximum biocompatibility of MNPs upon synthesis. During the research carried out, two different approaches were evaluated to coat a magnetic core composed of magnetite, using phloroglucinol and glyoxal, following the idea of making the process more sustainable and biocompatible. The difference between those approaches resides on the use of PF-127 as porogen agent during the coating step. However, some significant differences were found for the material synthesized without PF-127 as porogen agent, with the most important one being the lack of stabilization in water, a crucial characteristic of MNPs for biomedical applications. This mishap leaded to the continuation of the methodology development with just one material. The material selected was evaluated as nanocarrier to load and deliver drugs using doxorubicin (DOX) and omeprazole (OME). The delivery was tested at different pH values in order to evaluate its influence, as human body has different pH in a normal tissue (pH 7.4) than in the intracellular tumor environment (pH 4.5) or in its surroundings (pH 6.0).
A nanociência tem experimentado recentemente um forte desenvolvimento. As nanopartículas magnéticas (MNPs) têm sido um dos materiais mais atraentes. Com foco nas aplicações biomédicas, esta tese tem como objetivo principal desenvolver novos métodos de revestimento de carbono para alcançar a máxima biocompatibilidade durante a síntese de MNPs. Durante a pesquisa serão avaliadas duas abordagens diferentes para revestir um núcleo magnético feito de magnetita, as duas utilizan floroglucinol e glioxal, seguindo a ideia de tornar o processo mais sustentável e biocompatível. A diferença entre essas abordagens será sobre o emprego da PF-127 como agente porógeno durante a etapa de revestimento. No entanto, algumas diferenças significativas foram encontradas que o material sintetizado sem a PF-127 como agente porógeno não estava arquivando uma das características mais importantes das MNPs para aplicações biomédicas, a estabilização na água. Este mishap conduziu a continuar a metodologia apenas com um material. O material selecionado foi avaliado para carga e entrega de medicamentos com doxorrubicina e omeprazol. A entrega foi testada em diferentes valores de pH para avaliar sua influência, pois o corpo humano tem pH diferente em um tecido normal (pH 7,4) do que no ambiente tumoral intracelular (pH 4,5) ou em seu entorno (pH 6,0).
Hou, Yu-Shen y 侯禹伸. "Carbon based nanomaterials and green synthesis of metal nanoparticles modified electrode for electrochemical and microbial applications". Thesis, 2016. http://ndltd.ncl.edu.tw/handle/83244v.
Texto completo國立臺北科技大學
化學工程研究所
104
Modified material improve the working electrode from electrochemical sensor. This study has used plant extracts as a reducing agent to synthesize metal nanoparticle(ex: Ag and Au)as a modified material. This process is simple, low cost, non-toxic and environmentally friendly. Silver nanoparticles were used in modified material for 4-nitrophenol sensor. The linear range, detection limit and sensitivity are estimated as 0.09–82.5 μM, 0.06 μM and 3.0 μA mM-1 cm2 respectively. Gold nanoparticles and graphene oxide used in modified composites for chloramphenicol sensor. The linear range, detection limit and sensitivity are estimated as 1.5–2.95 μM, 0.25 μM and 3.81 μA mM-1 cm2 respectively. Furthermore, the Cadmium hydroxide/reduced graphene oxide composites have been prepared using a simple co-precipitation method. This composites used in N-phenylacetamide sensor. The linear range, detection limit and sensitivity are estimated as 0.1–102 μM, 0.20 μM and 24.452 μA mM-1 cm2 respectively.
Mashat, Afnan. "Functional Materials Based on Surface Modification of Carbon Nanotubes for Biomedical and Environmental Applications". Diss., 2015. http://hdl.handle.net/10754/552903.
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