Relevant bibliographies by topics / Oxide nanomaterials

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Oxide nanomaterials'

Author: Grafiati
Published: 24 April 2022

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Journal articles on the topic "Oxide nanomaterials"

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Chen, Wen, Li Qiang Mai, Yan Yuan Qi, Wei Jin, T. Hu, W. L. Guo, Y. Dai, and E. D. Gu. "One-Dimensional Oxide Nanomaterials through Rheological Self-Assembling." Key Engineering Materials 336-338 (April 2007): 2128–33. http://dx.doi.org/10.4028/www.scientific.net/kem.336-338.2128.

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This article introduces a process for the growth of one-dimensional oxide nanomaterials that combines rheological phase reaction and hydrothermal self-assembling process. Fundamentals and practical approaches of hydrothermal self-assembling process and rheological phase reaction are briefly described. Particular attention is devoted to the rheological self-assembling for the growth of low dimensional oxide nanomaterials. Many examples are shown that the rheological self-assembling is an effective method to prepare one-dimensional nanomaterials, organic-inorganic hybrids and 1-D nanomaterial array for optical-electronic and electrochemical devices and catalysis. Morphologies, microstructures, properties, and application of one-dimensional oxide nanomaterials are reviewed.
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Liu, Mingling, Meiling Sun, and Zhijia Wang. "Synthesis, Optical Properties and Applications of Ternary Oxide Nanoparticles by a Microwave Technique." Journal of Nanoscience and Nanotechnology 21, no. 10 (October 1, 2021): 5307–11. http://dx.doi.org/10.1166/jnn.2021.19359.

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Nanocrystal preparation is in high demand due to the development of nanodevices. Nanostructures or microstructures of binary oxides such as TiO2, ZnO, and Al2O3 have been extensively prepared and studied. Synthesis of ternary oxide nanomaterials with controlled structures, morphologies, and sizes are of interest due to their potential applications in nanodevices caused by tunable energy level, bandgap, and structure. In this work, a solution-based method is used to prepare CaWO4 and LaPO4 ternary oxide nanomaterials by microwave technique. Controlled sizes and morphologies including nanorods and microspheres are synthesized by the microwave method, which is believed to be a facile and low-cost technique for the synthesis of ternary oxide nanomaterials. Furthermore, the (relatively) quick process enables high efficiency of the production. The structural and optical properties of the prepared nanomaterials are also investigated in this work. This work benefits nanomaterial synthesis for nanomanufacturing and applications in lighting and photodynamic activations as well as optical storage.
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Li, Tianle, and Tao Zhang. "The Application of Nanomaterials in Angiogenesis." Current Stem Cell Research & Therapy 16, no. 1 (December 1, 2021): 74–82. http://dx.doi.org/10.2174/1574888x15666200211102203.

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Induction of angiogenesis has enormous potential in the treatment of ischemic diseases and the promotion of bulk tissue regeneration. However, the poor activity of angiogenic cells and proangiogenic factors after transplantation is the main problem that imposes its wide applications. Recent studies have found that the development of nanomaterials has solved this problem to some extent. Nanomaterials can be mainly classified into inorganic nanomaterials represented by metals, metal oxides and metal hydroxides, and organic nanomaterials including DNA tetrahedrons, graphene, graphene oxide, and carbon nanotubes. These nanomaterials can induce the release of angiogenic factors either directly or indirectly, thereby initiating a series of signaling pathways to induce angiogenesis. Moreover, appropriate surface modifications of nanomaterial facilitate a variety of functions, such as enhancing its biocompatibility and biostability. In clinical applications, nanomaterials can promote the proliferation and differentiation of endothelial cells or mesenchymal stem cells, thereby promoting the migration of hemangioblast cells to form new blood vessels. This review outlines the role of nanomaterials in angiogenesis and is intended to provide new insights into the clinical treatment of systemic and ischemic diseases.
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Бутенко, О. О., О. В. Черниш, В. Г. Хоменко, В. С. Твердохліб, and В. З. Барсуков. "ОСОБЛИВОСТІ ВПЛИВУ НАНОМАТЕРІАЛІВ НА ЕКРАНУВАННЯ ЕЛЕКТРОМАГНІТНОГО ВИПРОМІНЮВАННЯ КОМПОЗИТАМИ." Bulletin of the Kyiv National University of Technologies and Design. Technical Science Series 146, no. 3 (January 11, 2021): 155–64. http://dx.doi.org/10.30857/1813-6796.2020.3.13.

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The use of nanomaterials as a composite material to improve the efficiency of a protective coating for shielding against electromagnetic interference. Samples were studied using equipment from Keycom Corp. (Japan) developed for measuring the shielding effect. Ultrasonic dispersion of nanomaterials was performed using a UZDN-A1200T ultrasonic disperser. The resistivity of the composite coatings was measured using a ST2558B-F01 standardized 4-electrode cell. The influence of various nanomaterials on the protective properties of thin carbon-polymer coatings has been established. The following nanomaterials have been investigated: boron oxide and carbide, iron oxide, carbon nanotubes, and graphene. The dependence of the resistivity of the coating and the shielding effect on the type of nanomaterial in the composite sample has been established. It has been experimentally proved that the ultrasonic dispersion can improve the shielding effect by 2.5 times. It has been found that graphene has a slight advantage compared to other carbon materials. Also, our results have been established that non-conductive materials such as nano-oxides of iron, boron, and boron carbide can be quite effective for creating radio-absorbing composite materials. The paper proposes a new approach to obtain thin protective coatings against electromagnetic radiation using nanomaterials such as boron carbide, boron oxide, iron oxide, some types of carbon nanotubes, and graphene. The paper proposes a unique algorithm for the ultrasonic dispersion of nanomaterials for the manufacture of composite materials. For the first time, an analysis of the shielding effect of coatings based on domestic materials using international standardized research methods has been carried out. Composite coatings can primarily be used to protect humans from electromagnetic radiation. The materials can be widely used to solve the problems of shielding premises, equipment, in the military, and medical industries.
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Бутенко, О. О., О. В. Черниш, В. Г. Хоменко, В. С. Твердохліб, and В. З. Барсуков. "ОСОБЛИВОСТІ ВПЛИВУ НАНОМАТЕРІАЛІВ НА ЕКРАНУВАННЯ ЕЛЕКТРОМАГНІТНОГО ВИПРОМІНЮВАННЯ КОМПОЗИТАМИ." Bulletin of the Kyiv National University of Technologies and Design. Technical Science Series 146, no. 3 (January 11, 2021): 155–64. http://dx.doi.org/10.30857/1813-6796.2020.3.13.

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The use of nanomaterials as a composite material to improve the efficiency of a protective coating for shielding against electromagnetic interference. Samples were studied using equipment from Keycom Corp. (Japan) developed for measuring the shielding effect. Ultrasonic dispersion of nanomaterials was performed using a UZDN-A1200T ultrasonic disperser. The resistivity of the composite coatings was measured using a ST2558B-F01 standardized 4-electrode cell. The influence of various nanomaterials on the protective properties of thin carbon-polymer coatings has been established. The following nanomaterials have been investigated: boron oxide and carbide, iron oxide, carbon nanotubes, and graphene. The dependence of the resistivity of the coating and the shielding effect on the type of nanomaterial in the composite sample has been established. It has been experimentally proved that the ultrasonic dispersion can improve the shielding effect by 2.5 times. It has been found that graphene has a slight advantage compared to other carbon materials. Also, our results have been established that non-conductive materials such as nano-oxides of iron, boron, and boron carbide can be quite effective for creating radio-absorbing composite materials. The paper proposes a new approach to obtain thin protective coatings against electromagnetic radiation using nanomaterials such as boron carbide, boron oxide, iron oxide, some types of carbon nanotubes, and graphene. The paper proposes a unique algorithm for the ultrasonic dispersion of nanomaterials for the manufacture of composite materials. For the first time, an analysis of the shielding effect of coatings based on domestic materials using international standardized research methods has been carried out. Composite coatings can primarily be used to protect humans from electromagnetic radiation. The materials can be widely used to solve the problems of shielding premises, equipment, in the military, and medical industries.
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Ng, C. W. W., and J. L. Coo. "Hydraulic conductivity of clay mixed with nanomaterials." Canadian Geotechnical Journal 52, no. 6 (June 2015): 808–11. http://dx.doi.org/10.1139/cgj-2014-0313.

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The focus of this note is to investigate the hydraulic conductivity behavior of clay mixed with nanomaterials. Two different nanomaterials — namely, gamma-aluminum oxide powder (γ-Al2O3) and nano-copper oxide (CuO) — were selected and mixed with clay at different percentages (i.e., 2%, 4%, and 6%). Hydraulic conductivity tests were carried out in a flexible wall permeameter following the ASTM D5084 standard. Mercury intrusion porosimetry (MIP) tests were also carried out to determine the pore-size distribution. At 2% of γ-Al2O3 and nano-CuO, the hydraulic conductivity of clay decreased 30% and 45%, respectively. As the proportion of the nanomaterial increases, the reduction of hydraulic conductivity becomes less prominent as flow paths devoid of nanomaterials are unlikely. Reduction of hydraulic conductivity is due to the pores of clay being clogged by the nanomaterial. Pore-size distribution curves show that the largest pore size reduced by 20% when clay was mixed with 4% nano-CuO.
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Garriga, Rosa, Tania Herrero-Continente, Miguel Palos, Vicente L. Cebolla, Jesús Osada, Edgar Muñoz, and María Jesús Rodríguez-Yoldi. "Toxicity of Carbon Nanomaterials and Their Potential Application as Drug Delivery Systems: In Vitro Studies in Caco-2 and MCF-7 Cell Lines." Nanomaterials 10, no. 8 (August 18, 2020): 1617. http://dx.doi.org/10.3390/nano10081617.

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Carbon nanomaterials have attracted increasing attention in biomedicine recently to be used as drug nanocarriers suitable for medical treatments, due to their large surface area, high cellular internalization and preferential tumor accumulation, that enable these nanomaterials to transport chemotherapeutic agents preferentially to tumor sites, thereby reducing drug toxic side effects. However, there are widespread concerns on the inherent cytotoxicity of carbon nanomaterials, which remains controversial to this day, with studies demonstrating conflicting results. We investigated here in vitro toxicity of various carbon nanomaterials in human epithelial colorectal adenocarcinoma (Caco-2) cells and human breast adenocarcinoma (MCF-7) cells. Carbon nanohorns (CNH), carbon nanotubes (CNT), carbon nanoplatelets (CNP), graphene oxide (GO), reduced graphene oxide (GO) and nanodiamonds (ND) were systematically compared, using Pluronic F-127 dispersant. Cell viability after carbon nanomaterial treatment followed the order CNP < CNH < RGO < CNT < GO < ND, being the effect more pronounced on the more rapidly dividing Caco-2 cells. CNP produced remarkably high reactive oxygen species (ROS) levels. Furthermore, the potential of these materials as nanocarriers in the field of drug delivery of doxorubicin and camptothecin anticancer drugs was also compared. In all cases the carbon nanomaterial/drug complexes resulted in improved anticancer activity compared to that of the free drug, being the efficiency largely dependent of the carbon nanomaterial hydrophobicity and surface chemistry. These fundamental studies are of paramount importance as screening and risk-to-benefit assessment towards the development of smart carbon nanomaterial-based nanocarriers.
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Kumar, Abhishek, Rajiv Rakshit, Arnab Bhowmik, Nintu Mandal, Anupam Das, and Samrat Adhikary. "Nanoparticle-Induced Changes in Resistance and Resilience of Sensitive Microbial Indicators towards Heat Stress in Soil." Sustainability 11, no. 3 (February 7, 2019): 862. http://dx.doi.org/10.3390/su11030862.

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Modern agricultural innovations with nanomaterials are now being applied in every sphere of agriculture. However, their interaction with soil microbial processes is not being explored in detail. This initiative was undertaken to understand the effect of metal-oxide nanoparticles with heat stress in soil. Metal-oxide nanoparticles, zinc oxide (ZnO), and iron oxide (Fe2O3) (each at 10 and 40 mg kg−1 w/w) were mixed into uncontaminated soil and subjected to heat stress of 48 °C for 24 hours to assess their effect on soil biological indicators. The resistance indices for the acid (ACP), alkaline phosphatase (AKP) activity, and fluorescein diacetate hydrolyzing (FDA) activity (0.58 to 0.73, 0.58 to 0.66, and 0.42 to 0.48, respectively) were higher in the presence of ZnO nanoparticles as compared to Fe2O3 nanomaterials, following an unpredictable pattern at either 10 or 40 mg kg−1 in soils, except dehydrogenase activity (DHA), for which the activity did not change with ZnO nanomaterial. An explicit role of ZnO nanomaterial in the revival pattern of the enzymes was observed (0.20 for DHA, 0.39 for ACP, and 0.43 for AKP), except FDA, which showed comparable values with Fe2O3 nanomaterials for the following 90 day (d) after stress. Microbial count exhibiting higher resistance values were associated with Fe2O3 nanoparticles as compared to ZnO nanomaterials, except Pseudomonas. The recovery indices for the microbial counts were higher with the application of Fe2O3 nanomaterials (0.34 for Actinobacteria, 0.38 for fungi, 0.33 for Pseudomonas and 0.28 for Azotobacter). Our study emphasizes the fact that sensitive microbial indicators in soil might be hampered by external stress initially but do have the competency to recover with time, thereby reinstating the resistance and resilience of soil systems.
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Barbillon, Grégory. "Latest Novelties on Plasmonic and Non-Plasmonic Nanomaterials for SERS Sensing." Nanomaterials 10, no. 6 (June 19, 2020): 1200. http://dx.doi.org/10.3390/nano10061200.

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An explosion in the production of substrates for surface enhanced Raman scattering (SERS) has occurred using novel designs of plasmonic nanostructures (e.g., nanoparticle self-assembly), new plasmonic materials such as bimetallic nanomaterials (e.g., Au/Ag) and hybrid nanomaterials (e.g., metal/semiconductor), and new non-plasmonic nanomaterials. The novel plasmonic nanomaterials can enable a better charge transfer or a better confinement of the electric field inducing a SERS enhancement by adjusting, for instance, the size, shape, spatial organization, nanoparticle self-assembly, and nature of nanomaterials. The new non-plasmonic nanomaterials can favor a better charge transfer caused by atom defects, thus inducing a SERS enhancement. In last two years (2019–2020), great insights in the fields of design of plasmonic nanosystems based on the nanoparticle self-assembly and new plasmonic and non-plasmonic nanomaterials were realized. This mini-review is focused on the nanoparticle self-assembly, bimetallic nanoparticles, nanomaterials based on metal-zinc oxide, and other nanomaterials based on metal oxides and metal oxide-metal for SERS sensing.
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Saleem, Haleema, and Syed Javaid Zaidi. "Developments in the Application of Nanomaterials for Water Treatment and Their Impact on the Environment." Nanomaterials 10, no. 9 (September 7, 2020): 1764. http://dx.doi.org/10.3390/nano10091764.

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Nanotechnology is an uppermost priority area of research in several nations presently because of its enormous capability and financial impact. One of the most promising environmental utilizations of nanotechnology has been in water treatment and remediation where various nanomaterials can purify water by means of several mechanisms inclusive of the adsorption of dyes, heavy metals, and other pollutants, inactivation and removal of pathogens, and conversion of harmful materials into less harmful compounds. To achieve this, nanomaterials have been generated in several shapes, integrated to form different composites and functionalized with active components. Additionally, the nanomaterials have been added to membranes that can assist to improve the water treatment efficiency. In this paper, we have discussed the advantages of nanomaterials in applications such as adsorbents (removal of dyes, heavy metals, pharmaceuticals, and organic contaminants from water), membrane materials, catalytic utilization, and microbial decontamination. We discuss the different carbon-based nanomaterials (carbon nanotubes, graphene, graphene oxide, fullerenes, etc.), and metal and metal-oxide based nanomaterials (zinc-oxide, titanium dioxide, nano zerovalent iron, etc.) for the water treatment application. It can be noted that the nanomaterials have the ability for improving the environmental remediation system. The examination of different studies confirmed that out of the various nanomaterials, graphene and its derivatives (e.g., reduced graphene oxide, graphene oxide, graphene-based metals, and graphene-based metal oxides) with huge surface area and increased purity, outstanding environmental compatibility and selectivity, display high absorption capability as they trap electrons, avoiding their recombination. Additionally, we discussed the negative impacts of nanomaterials such as membrane damage and cell damage to the living beings in the aqueous environment. Acknowledgment of the possible benefits and inadvertent hazards of nanomaterials to the environment is important for pursuing their future advancement.
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Dissertations / Theses on the topic "Oxide nanomaterials"

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Hodgson, Gregory K. "Samarium Oxide Based Nanomaterials for Heterogeneous Catalysis." Thesis, Université d'Ottawa / University of Ottawa, 2018. http://hdl.handle.net/10393/37785.

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The emergence of unique or enhanced physical, chemical and optical material properties at the nanoscale underlies the swift rise of nanomaterials science over recent decades. Within this interdisciplinary field, catalysis performed by nanomaterials (i.e. nanocatalysis) is one area where differences between nanoscale and bulk material properties offer particularly attractive opportunities for application. The consequent pursuit of viable nanomaterials with unprecedented catalytic activity has inevitably expanded across the periodic table, whereby a number of highly efficient precious metal, metal oxide and composite nanostructured catalysts have been developed for a wide range of synthetic organic and inorganic transformations. The lanthanide series has not been excluded from this search, but is still underrepresented in catalysis despite some rich chemistry and reactivity which sets these elements apart from many other metals. More recently however, the necessary paradigm shift away from commonly utilized but expensive, potentially toxic precious metal catalysts, and toward more sustainable alternatives, has seen an upsurge in the development of novel nanomaterials for heterogeneous catalysis: the general topic of this doctoral thesis. Heterogeneous nanocatalysis offers distinct advantages over homogeneous catalysis. Catalyst recyclability, ease of separation from reaction mixtures, and minimal product contamination all contribute to the higher overall effectiveness of heterogeneous catalysts relative to their homogeneous counterparts. The use of light as an abundant reagent, both in nanomaterial fabrication and for photocatalysis, is another attractive prospect. This dissertation addresses both points, describing the iterative development and application of photochemically-prepared samarium oxide based nanomaterials for heterogeneous catalysis and photocatalysis. Through a series of related peer-reviewed publications and associated commentary, the evolution of the application-driven design of a nanomaterial which is both efficient and effective for a diversity of heterogeneous catalytic and photocatalytic transformations is presented. Major findings include 1) both colloidal and supported samarium oxide nanoparticles can be prepared photochemically and comprise primarily Sm2O3 but may contain localized mixed valences or dynamic surface oxidation states; 2) colloidal samarium oxide nanoparticles possess high activity for Brønsted acid and oxidative catalysis, but recyclability and overall effectiveness is less than optimal due to a combination of polydispersity and size-dependent catalytic activity; 3) a similarly-prepared “second generation” samarium oxide/titanium dioxide nanocomposite presented several advantages over its predecessor, performing highly efficient and effective pure heterogeneous, dual photoredox-Lewis acid catalysis in two different types of synthetically relevant photocyclizations. Effects of different nanoparticle supports, rare insights into the catalytic mechanisms and behaviour of these nanomaterials‒obtained at the single molecule level by innovative application of Total Internal Reflection Fluorescence Microscopy (TIRFM) to catalysis research‒as well as advances in TIRFM data analysis protocols, are also discussed.
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Garzón, Manjón Alba. "Synthesis of Metal Oxide Nanoparticles for Superconducting Nanocomposites and Other Applications." Doctoral thesis, Universitat Autònoma de Barcelona, 2016. http://hdl.handle.net/10803/399330.

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Los proceso térmicos y por microondas, se utilizan para sintetizar nanopartículas de diferentes óxidos metálicos tales como magnetita (Fe3O4) y óxido de cerio (CeO2). Mediante la modificación de los precursores Fe(R2diket)3 (R = Ph, tBu y CF3), Ce(acac)3 y Ce(OAc)3, y siguiendo la misma ruta de síntesis, es posible controlar el tamaño y la forma de los nanocristales obtenidos. La ruta general se lleva a cabo en trietilenglicol (TREG) o benzylalcohol (BnOH), debido a su alto punto de ebullición y que además puede actuar como estabilizante de las nanopartículas en disolventes polares. Las nanopartículas se han caracterizado por varias técnicas de laboratorio comunes: Alta Resolución Microscopía Electrónica de Transmisión (HR TEM), espectroscopia infrarroja (IR), Rayos X (XRPD), magnetometría tal como Superconducting Quantum Interference Device (SQUID), Resonancia Magnética Nuclear (RMN), Cromatografía de Gases-Espectroscopía de Masas (GC-MS), Espectroscopia de fotoelectrones emitidos por rayos X (XPS) y Análisis Termogravimétrico (TGA). Con todas estas técnicas, el tamaño final, la forma, la composición, la estructura cristalina, el comportamiento magnético y la interacción del ligando con la superficie de las nanopartículas han sido estudiadas y caracterizadas. Además, se demuestra la alta eficiencia de los das dos metodologías que se han optimizado para sintetizar nanopartículas de diferentes familias. Las soluciones coloidales estables obtenidas en etanol se han utilizado para generar capas superconductoras de YBa2Cu3O7-δ (YBCO) debido a que la corriente crítica se puede aumentar cuando se incrustan las nanopartículas. Finalmente, una nueva aplicación como comportamiento antioxidante en células humanas se ha llevado a cabo para el caso de las nanopartículas de CeO2 debido a sus específicas propiedades que las hacen muy interesantes en este nuevo campo.
Thermal and microwave methodologies are used to synthesize different metal oxides nanoparticles such as magnetite (Fe3O4), cerium oxide (CeO2). By modifying the precursors (Fe(R2diket)3 (R= Ph, tBu and CF3), Ce(acac)3 and Ce(OAc)3), and following the same synthetic route, it is possible to control the size and shape of the nanocrystals obtained. The general route is carried out in triethylene glycol (TREG) or benzyl alcohol (BnOH) media, due to its high boiling point and, which acts also as a capping ligand of the nanoparticles, stabilizing them in polar solvents. Nanoparticles have been characterized by several common physical laboratory techniques: High Resolution Transmission Electron Microscopy (HR TEM), infrared spectroscopy (IR), X-ray Powder Diffraction (XRPD), magnetometry via Superconducting Quantum Interference Device (SQUID), Nuclear Magnetic Resonance (RMN), Gas Chromatography-Mass Spectroscopy (GC-MS), X-ray Photoelectron Spectroscopy (XPS) and Thermogravimetric Analysis (TGA). With all these techniques, the final size, shape, composition, crystal structure, magnetic behaviour and capping ligand interaction have been studied, showing the high quality crystals generated. In addition, we demonstrate the high efficiency of all two one-pot methodologies that have been optimized to synthesize different families of nanoparticles. The stable colloidal solutions obtained in ethanol have been used to generate ex-situ hybrid YBa2Cu3O7-δ (YBCO) superconducting layers because the critical current can be increased when the nanoparticles are embedded. Finally, a new application as an antioxidant behaviour in human cells is tested for the case of CeO2 nanoparticles due to their specifically properties that make them really interested in this new field.
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Yang, Rusen. "Oxide nanomaterials synthesis, structure, properties and novel devices /." Diss., Available online, Georgia Institute of Technology, 2007, 2007. http://etd.gatech.edu/theses/available/etd-06212007-161309/.

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Thesis (Ph. D.)--Materials Science and Engineering, Georgia Institute of Technology, 2008.
Peter J. Hesketh, Committee Member ; Zhong Lin Wang, Committee Chair ; C.P. Wong, Committee Member ; Robert L. Snyder, Committee Member ; Christopher Summers, Committee Member.
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Mai, Wenjie. "Synthesis, characterization and application of ZnO nanomaterials." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/28172.

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Thesis (M. S.)--Materials Science and Engineering, Georgia Institute of Technology, 2009.
Committee Chair: Wang, Zhong Lin; Committee Member: Gall, Kenneth A.; Committee Member: Snyder, Robert L.; Committee Member: Wong, Ching-Ping; Committee Member: Wu, C.F. Jeff.
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Yeandel, Stephen. "Atomistic simulation of thermal transport in oxide nanomaterials." Thesis, University of Bath, 2015. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.687351.

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The aim of this work has been to use atomistic computer simulation methods to calculate the thermal conductivity and investigate factors that will modify the behaviour when applied to three different oxide materials: MgO, SiO2 and SrTiO3. These were chosen as they represent distinct classes of materials and are substrates for thermoelectric devices, where one of the primary goals is to tailor the system to reduce the thermal conductivity. Chapter 1 introduces thermoelectric concepts, gives a background of the theory and a review of various important thermoelectric materials. In Chapter 2 an overview of the interatomic interactions is presented along with details on the implementation of these interactions in a simulation of a 3D periodic crystal. Chapter 3 outlines the importance of phonon processes in crystals and several approaches to the calculation of thermal conductivity are presented. MgO results are given in Chapter 4. Both the Green-Kubo and Boltzmann transport equation (BTE) methods of calculating thermal conductivity were used. The effect on thermal conductivity of two different grain boundary systems are then compared and finally extended to MgO nanostructures, thus identifying the role of surfaces and complex nanostructure architectures on thermal conductivity. In Chapter 5 two different materials with the formula unit SiO2 are considered. The two materials are quartz and silicalite which show interesting negative thermal expansion behaviour which may impact upon the thermal transport within the material. Chapter 6 presents results on the promising thermoelectric material STO. Once again the results from both Green-Kubo and BTE calculations are compared. Grain boundaries are also studied and the effect of inter-boundary distance and boundary type on the thermal conductivity is explored. Finally, a nanostructured STO system (assembled nanocubes) with promising thermoelectric applications is studied. Chapter 7 outlines the conclusions made from this work and suggests areas for future study.
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Gravani, Styliani. "Synthesis of nanomaterials via anodic aluminium oxide templates." Thesis, University of Surrey, 2014. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.616919.

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This thesis is concerned with the synthesis of 1 D nanomaterials via a template-assisted route. Porous anodic aluminium oxide templates prepared electrochemically have been utilised with two intrinsically different deposition techniques, sol-gel and high power pulsed magnetron sputtering (HPPMS), to obtain ID metal and metal oxide nanowires and nanotubes. The resultant morphologies and crystal structures were examined via SEM, XPS, XRD, TEM and EELS. A number of porous template alumina structures have been grown via the anodisation of pure and sputtered aluminium. The effects of surface pre-treatments, etching treatments and anodisation conditions on the resultant morphologies were investigated. It has been found that pore growth is largely dependent on the surface roughness of the substrate as well as the anodisation conditions. The anodisation duration is critical in promoting and allowing self-ordering. Obtained templates, varied in thickness from a few hundred run to several tens of pu-m, with an average pore diameter of 70 nm, interpore distance of 100 nm and pore density of 4 x 1010 cm2. . The implementation of HPPMS led to the successful deposition of Ti inside the alumina template to depths of around 45-50 run. It was found that templates with highly parallel pores on a rigid substrate such as Si, are more suited if this deposition method is to be used. Control of the pressure and substrate biasing is critical in avoiding 'pinch-off and 'bridging' and leading to complete pore filling. The results have shown that HPPMS is a promising plasma technology for the synthesis of nanomaterials such as nanodots, nanopillars or nanowires, when used with porous alumina templates under appropriate conditions. The use of sol-gel deposition has led to the growth of a number of interesting materials and structures. Nanocrystalline Ce02 and Ce1-xZrx02 and Ce1-xSmx02 thin films and powders have been successfully obtained exhibiting novel micro- and nano-structures, likely to find useful applications in catalysis and gas sensing due to their redox properties and large surface to volume ratio. FUlihermore, the treatment of porous alumina templates via a sol-gel/hydrothermal method led to the formation of Ce-doped y-Ah03 nanowires. Hence, a simple, direct and cost effective method for producing large scale Ah03 (and doped Ah03) nanowires is repotied. Moreover, by annealing at temperatures above 600 DC, nanowires of different crystallographic forms such as 0-, e- and a-Ah03 can also be readily obtained. As the dopant Ce was successfully introduced through this method a wide range of doped-Ah03 nanowires (by other rare eatihs such as Y, La, Gd, Srn), at various concentrations (e.g. 1,3,5 at. %) can be readily obtained.
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McCrory, Michael S. "Synthesis, Characterization, and Application of Molybdenum Oxide Nanomaterials." Scholar Commons, 2017. https://scholarcommons.usf.edu/etd/7424.

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Nanostructured molybdenum trioxide (MoO3) was synthesized and used as a precursor in a comparative study, along with commercial MoO3, to synthesize molybdenum dioxide (MoO2) nanoparticles. Scanning electron microscope (SEM) images revealed the particles to be approximately 30-50 nm in diameter. X-ray diffraction (XRD) confirmed MoO3 was fully reduced to MoO2 in all cases. Time dependent experiments showed that within two hours no traces of MoO3 are present. All of the experiments showed the materials were excellent absorbent materials, as well as photocatalysts. Both MoO2 materials performed almost exactly the same, with both samples being able to remove 100% of the methylene blue (MB) in one minute with light, and in two minutes without light. The morphology of MoO2 was controlled in a comparative study by varying the concentration of cetyltrimethylammonium bromide (CTAB) present during the hydrothermal reaction. As the concentration of CTAB increased, the morphology of the material changed from nanoparticles, to nanospheres, to microspheres, to hollow microspheres, and finally a highly agglomerated version of microspheres and particles combined, as confirmed by SEM images. A formation mechanism for the formation of the various sized spheres was proposed with a combination of aggregation and Ostwald ripening. XRD confirmed that all of the MoO3 was reduced to MoO2, along with no residual peaks from the CTAB that was present during the reaction. Upon trying to mix some of the materials into the MB solutions, it became obvious that some of the materials were hydrophobic. The decontamination results once again showed that the synthesized MoO2 materials were not only photocatalysts, but adsorbents as well. Samples synthesized with 0.1-5 mM CTAB were able to remove 100% of the MB in 10 minutes or less. Samples synthesized with 10 mM CTAB were able to remove 54.4% and 35% of the MB in 10 minutes, with and without light, respectively. Samples synthesized with 15 mM CTAB were able to remove 29.4% and 26.3% of the MB in 10 minutes, with and without light, respectively. The apparent decrease in decontamination performance was proposed to be caused by surface morphology induced hydrophobicity. A mechanism to describe why the hydrophobic particles were still able to decontaminate the water was proposed to be caused by coming into direct contact with the magnetic stirrer as the water level dropped due to sample collection. MoO2 nanoparticles were successfully synthesized onto a copper substrate, in a single step, via a hydrothermal synthesis technique. It is believed to be the first report of such a synthesis method. XRD confirmed all of the MoO3 had been reduced to MoO2, and also confirmed that no other compounds had formed between the molybdenum and copper. SEM images of the MoO2 coated copper substrate showed uniform nanoparticles ranging from 30-50 nm. The MoO2 coated copper substrate was able to decontaminate 57.5% of the MB from water in 10 minutes without exposure to light, while it was able to decontaminate 71.7% of the MB from water in 10 minutes with exposure to light.
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Imagawa, Haruo. "Study on Metal Oxide Nanomaterials for Automotive Catalysts." 京都大学 (Kyoto University), 2012. http://hdl.handle.net/2433/158079.

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Tsai, Chung-Ying. "NOVEL NANOMATERIALS FOR ENERGY RELATED APPLICATIONS." OpenSIUC, 2017. https://opensiuc.lib.siu.edu/dissertations/1426.

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The depletion of natural resources has long been a concern since the rapid increase in energy consumption in recent years. The gradual increase of pollution worldwide accompanied by energy generation process also started to post threats to the environment. With the evolution of technology and materials, power generation and energy storage with significant improved efficiency can be made possible, and further benefits the reduction of degree of pollution generated. In this research, synthesis, processing, characterization and application of nano materials towards energy generation and energy storage devices are studied. In chapter 2, superior corrosion resistance properties of HVOF thermal spray of TiC and TiB2 coatings on 304H stainless steel, 430, and P91 steels were reported. The coatings successfully served at a protection layer by limiting oxygen penetration, sulfur attack, and decreased the formation of pits and cracks on the substrates at 750°C for up to 800 hours. In chapter 3, continuous smooth TiC nanofibers were successfully synthesized by carbothermal reduction of electrospun titanium based nanofibers. XRD and HR-TEM analysis results indicated the synthesized nanofibers were composed of high purity TiC. Electric conductivity of a single fiber was in the 2.00×10^5 range. Symmetrical cyclic voltammetry curve further indicated good electrochemical properties of the fibers. In addition, the TiC nanofibers also exhibited excellent sintering properties over TiC or TiB2 nanoparticles. Studies on morphology and electrochemical properties of MnOx nanofiber and nanoparticles is reported in chapter 4. MnOx, MnOx/SnO2, and MnOx/CNT nanofibers synthesized using electrospinning method showed specific capacitance of 166.12 F/g, 182 F/g for, and 472 F/g at scan rate of 10mV/s. Analysis results also showed positive impact of conductivity and fiber morphology on the electrochemical properties of the fibers. morphology and electrochemical properties of the MnOx nanoparticles synthesized using solvents with different polarity with gelation pH of 8.5, 9.0 and 10.0 were also studied. Analysis results show the impact of particle sized and morphology on the electrochemical properties. Highest specific capacitance measured for the synthesized nanoparticles was 231.38F/g@10mV/s and 165.13F/g@10mV/s for methanol and mixture of methanol and propanol based MnOx respectively. Effect of solvent polarity of the manganese sol on MnOx formation and phase transformation temperature is also shown in the chapter.
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Mueller, Paul S. "Synthesis of silica based porous nanomaterials." Diss., University of Iowa, 2014. https://ir.uiowa.edu/etd/1368.

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Silica is one of the most abundant elements on the planet, has flexible bonding properties and generally excellent stability. Because of these properties, silica has been a vital component in technologies ranging from ancient glassware to modern supercomputers. Silica is able to form a wide range of materials both alone and as a component of larger material frameworks. Porous silica based nanomaterials are rapidly growing in importance because of their many applications in a wide variety of fields. This thesis focuses on the synthesis of silica based porous nanomaterials: nanocrystalline zeolites, mesoporous silica nanoparticles, and iron oxide core/shell nanocomposites. The synthetic conditions of these materials were varied in order to maximize efficiency, minimize environmental impact, and produce high quality material with far reaching potential applications. The materials were characterized by physicochemical techniques including Transmission Electron Microscopy, Dynamic Light Scattering, Powder X-Ray Diffraction, Solid State NMR, and Nitrogen Adsorption Isotherms. The materials were evaluated and conditions were controlled to produce high yields of quality nanomaterials and hypothesize methods for further synthetic control. The products will be used in studies involving nanoparticle toxicity, environmental remediation, and drug delivery.
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Books on the topic "Oxide nanomaterials"

1

Carpenter, Michael A. Metal Oxide Nanomaterials for Chemical Sensors. New York, NY: Springer New York, 2013.

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Carpenter, Michael A., Sanjay Mathur, and Andrei Kolmakov, eds. Metal Oxide Nanomaterials for Chemical Sensors. New York, NY: Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-5395-6.

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Rodríguez, José A., and Marcos Fernández-García, eds. Synthesis, Properties, and Applications of Oxide Nanomaterials. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2006. http://dx.doi.org/10.1002/0470108975.

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Xiangchao, Zhang, and Ouyang, Jing, Professor in Materials Sciences, eds. Di wei jin shu yang hua wu na mi cai liao: Low-dimensional metal oxide nanomaterials. Beijing: Ke xue chu ban she, 2012.

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Hu, Yating. Carbon and Metal Oxides Based Nanomaterials for Flexible High Performance Asymmetric Supercapacitors. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-10-8342-6.

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Roy, Nandini, Utshab Singha, Saurav Paul, Gaurav Kumar Pushp, Swagat Bardoloi, Maimy Debbarma, and Freeman Boro. Metal Oxide Nanomaterials. Edited by Sunayana Goswami (Ed.). Glasstree, 2020. http://dx.doi.org/10.20850/9781716360367.

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Engineered nanoparticles have been used widely in various sectors such as electronics, construction, health, energy, remediation and agriculture etc. In recent years, Metal oxide nanoparticles have become one of the important class of materials for both material and biological applications. For instance, Zinc oxide Nanoparticles has its effective bioapplications in various fields including pharmaceuticals, medicines, and agriculture. At the same time, these are of high important due to their utilization in biosensors, cosmetics, drug-delivery systems etc. This book documents some important aspects of metal oxide nanomaterials highlighting their material, environmental and biological prospects.
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Maccato, Chiara, and Davide Barreca, eds. Tailored Functional Oxide Nanomaterials. Wiley, 2022. http://dx.doi.org/10.1002/9783527826940.

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Mathur, Sanjay, Andrei Kolmakov, and Michael A. Carpenter. Metal Oxide Nanomaterials for Chemical Sensors. Springer, 2012.

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Maccato, C. Functional Oxide Nanomaterials with Tailored Organization. Wiley & Sons, Limited, John, 2021.

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Bioinspired Nanomaterials. Materials Research Forum LLC, 2021. http://dx.doi.org/10.21741/9781644901571.

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Biological synthesis employing microorganisms, fungi or plants is an alternative method to produce nanoparticles in low-cost and eco-friendly ways. The book covers the synthesis of metal nanoparticles, metal oxide nanostructures and nanocomposite materials, as well as the stability and characterization of bioinspired nanomaterials. Applications include optical and electrochemical sensors, packaging, SERS and drug delivery processes.
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Book chapters on the topic "Oxide nanomaterials"

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Bing Kong, Ling, Wenxiu Que, Lang Liu, Freddy Yin Chiang Boey, Zhichuan J. Xu, Kun Zhou, Sean Li, Tianshu Zhang, and Chuanhu Wang. "Oxide Based Supercapacitors I-Manganese Oxides." In Nanomaterials for Supercapacitors, 162–276. Boca Raton, FL : CRC Press, Taylor & Francis Group, [2017] | "A Science Publishers book.": CRC Press, 2017. http://dx.doi.org/10.1201/9781315153025-4.

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Bing Kong, Ling, Wenxiu Que, Lang Liu, Freddy Yin Chiang Boey, Zhichuan J. Xu, Kun Zhou, Sean Li, Tianshu Zhang, and Chuanhu Wang. "Oxide Based Supercapacitors II-Other Oxides." In Nanomaterials for Supercapacitors, 277–421. Boca Raton, FL : CRC Press, Taylor & Francis Group, [2017] | "A Science Publishers book.": CRC Press, 2017. http://dx.doi.org/10.1201/9781315153025-5.

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Amollo, Tabitha A., and Vincent O. Nyamori. "Photovoltaic Application of Graphene Oxide and Reduced Graphene Oxide." In 2D Nanomaterials, 263–78. Boca Raton: CRC Press, 2022. http://dx.doi.org/10.1201/9781003178453-15.

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Seshadri, R. "Oxide Nanoparticles." In The Chemistry of Nanomaterials, 94–112. Weinheim, FRG: Wiley-VCH Verlag GmbH & Co. KGaA, 2005. http://dx.doi.org/10.1002/352760247x.ch5.

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Eigler, Siegfried. "Graphene Oxide." In Encyclopedia of Polymeric Nanomaterials, 883–94. Berlin, Heidelberg: Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-642-29648-2_333.

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Gao, Wei. "Graphite Oxide." In Springer Handbook of Nanomaterials, 571–604. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-20595-8_15.

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Eigler, Siegfried. "Graphene Oxide." In Encyclopedia of Polymeric Nanomaterials, 1–13. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-36199-9_333-1.

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Rives, Vicente, Raquel Trujillano, and Miguel A. Vicente. "Oxide Nanomaterials in Ceramics." In Synthesis, Properties, and Applications of Oxide Nanomaterials, 683–713. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2006. http://dx.doi.org/10.1002/9780470108970.ch22.

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Mohammad, S. Noor. "Oxide-Assisted Growth Mechanism." In Synthesis of Nanomaterials, 173–86. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-57585-4_10.

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Bhattacharya, Sagarika, Subhra Samanta, and Biswarup Chakraborty. "Nitric Oxide Sensing with Carbon Nanomaterials." In Nitric Oxide Sensing, 43–78. New York: Jenny Stanford Publishing, 2021. http://dx.doi.org/10.1201/9781003142188-3.

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Conference papers on the topic "Oxide nanomaterials"

1

Adam, Rania Elhadi, Elfatih Mohammed Mustafa, Sami Elhag, Omer Nour, and Magnus Willander. "Photocatalytic properties for different metal-oxide nanomaterials." In Oxide-based Materials and Devices X, edited by Ferechteh H. Teherani, David C. Look, and David J. Rogers. SPIE, 2019. http://dx.doi.org/10.1117/12.2517436.

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Hidalgo Alcalde, Pedro, Jaime José Dolado Fernández, and Bianchi Méndez. "Efficient white-light emission from Zn2GeO4 nanomaterials." In Oxide-based Materials and Devices X, edited by Ferechteh H. Teherani, David C. Look, and David J. Rogers. SPIE, 2019. http://dx.doi.org/10.1117/12.2511254.

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QIAN, YI-TAI, and YUNLE GU. "SOLVOTHERMAL SYNTHESIS OF NON-OXIDE NANOMATERIALS." In Proceedings of the International Symposium on Solid State Chemistry in China. WORLD SCIENTIFIC, 2002. http://dx.doi.org/10.1142/9789812776846_0003.

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Vayssieres, Lionel. "Water-oxide interfacial control and nanomaterials design." In Optics & Photonics 2005, edited by Clemens Burda and Randy J. Ellingson. SPIE, 2005. http://dx.doi.org/10.1117/12.616118.

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A. A., Popova. "Electrochemical Properties of Anodic Oxide Films on Titanium, Vanadium, Niobium." In NANOMATERIALS AND TECHNOLOGIES-VI. Buryat State University Publishing Department, 2016. http://dx.doi.org/10.18101/978-5-9793-0883-8-60-63.

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Prakash, D., K. R. Nagabhushana, Sonia H. Tatumi, Rene R. Rocca, and Shigueo Watanabe. "Investigation on luminescence properties of nanocrystalline calcium oxide exposed to beta rays." In FUNCTIONAL OXIDES AND NANOMATERIALS: Proceedings of the International Conference on Functional Oxides and Nanomaterials. Author(s), 2017. http://dx.doi.org/10.1063/1.4982135.

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Rathod, Tejas, Hemali Padalia, and Sumitra Chanda. "Green synthesized zinc oxide nanoparticles as a therapeutic tool to combat candidiasis." In FUNCTIONAL OXIDES AND NANOMATERIALS: Proceedings of the International Conference on Functional Oxides and Nanomaterials. Author(s), 2017. http://dx.doi.org/10.1063/1.4982149.

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Mistry, Vaibhavi H., Bhaumik V. Mistry, B. P. Modi, and U. S. Joshi. "Effect of annealing on pulse laser deposition grown copper oxide thin film." In FUNCTIONAL OXIDES AND NANOMATERIALS: Proceedings of the International Conference on Functional Oxides and Nanomaterials. Author(s), 2017. http://dx.doi.org/10.1063/1.4982154.

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A. M., Volodin, Zaikovskii V. I., and Stoyanovskii V. O. "Synthesis and Solid-state Transformation of Oxide Materials in Carbon Nanoreactor." In NANOMATERIALS AND TECHNOLOGIES-VI. Buryat State University Publishing Department, 2016. http://dx.doi.org/10.18101/978-5-9793-0883-8-44-48.

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Bas, Salih Zeki, Mustafa Ozmen, and Salih Yildiz. "Electrochemical H2O2 sensor based on graphene oxide-iron oxide nanoparticles composite." In 2017 IEEE 7th International Conference "Nanomaterials: Application & Properties" (NAP). IEEE, 2017. http://dx.doi.org/10.1109/nap.2017.8190318.

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Reports on the topic "Oxide nanomaterials"

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Chen, Kevin. Final Reports Engineering Metal Oxide Nanomaterials for Fiber Optical Sensor Platforms. Office of Scientific and Technical Information (OSTI), December 2020. http://dx.doi.org/10.2172/1737358.

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Fenske, George. Characterization of the Tribological Behavior of Oxide-Based NanoMaterials: Final CRADA Report. Office of Scientific and Technical Information (OSTI), January 2017. http://dx.doi.org/10.2172/1348352.

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O’Neal, Kenneth, and Janice Musfeldt. Spectroscopic studies of size-dependent optical properties of oxide nanomaterials, molecule-based materials in extreme condition - Spectroscopic studies of size-dependent optical properties of oxide nanomaterials, molecule-based materials in extreme condition. University of Tennessee, Knoxville, October 2019. http://dx.doi.org/10.7290/qtlpnw5g3.

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Armstrong, Neal R. Asymmetric Semiconductor Nanorod/Oxide Nanoparticle Hybrid Materials: Model Nanomaterials for Light-Activated Formation of Fuels from Sunlight. Formal Progress Report -- Award DE-FG02-05ER15753. Office of Scientific and Technical Information (OSTI), June 2017. http://dx.doi.org/10.2172/1365549.

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Teng, Xiaowei. Transition Metal Oxides Nanomaterials for Aqueous Electrochemical Energy Storage. Office of Scientific and Technical Information (OSTI), August 2019. http://dx.doi.org/10.2172/1546597.

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Chefetz, Benny, Baoshan Xing, Leor Eshed-Williams, Tamara Polubesova, and Jason Unrine. DOM affected behavior of manufactured nanoparticles in soil-plant system. United States Department of Agriculture, January 2016. http://dx.doi.org/10.32747/2016.7604286.bard.

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The overall goal of this project was to elucidate the role of dissolved organic matter (DOM) in soil retention, bioavailability and plant uptake of silver and cerium oxide NPs. The environmental risks of manufactured nanoparticles (NPs) are attracting increasing attention from both industrial and scientific communities. These NPs have shown to be taken-up, translocated and bio- accumulated in plant edible parts. However, very little is known about the behavior of NPs in soil-plant system as affected by dissolved organic matter (DOM). Thus DOM effect on NPs behavior is critical to assessing the environmental fate and risks related to NP exposure. Carbon-based nanomaterials embedded with metal NPs demonstrate a great potential to serve as catalyst and disinfectors. Hence, synthesis of novel carbon-based nanocomposites and testing them in the environmentally relevant conditions (particularly in the DOM presence) is important for their implementation in water purification. Sorption of DOM on Ag-Ag₂S NPs, CeO₂ NPs and synthesized Ag-Fe₃O₄-carbon nanotubebifunctional composite has been studied. High DOM concentration (50mg/L) decreased the adsorptive and catalytic efficiencies of all synthesized NPs. Recyclable Ag-Fe₃O₄-carbon nanotube composite exhibited excellent catalytic and anti-bacterial action, providing complete reduction of common pollutants and inactivating gram-negative and gram-positive bacteria at environmentally relevant DOM concentrations (5-10 mg/L). Our composite material may be suitable for water purification ranging from natural to the industrial waste effluents. We also examined the role of maize (Zeamays L.)-derived root exudates (a form of DOM) and their components on the aggregation and dissolution of CuONPs in the rhizosphere. Root exudates (RE) significantly inhibited the aggregation of CuONPs regardless of ionic strength and electrolyte type. With RE, the critical coagulation concentration of CuONPs in NaCl shifted from 30 to 125 mM and the value in CaCl₂ shifted from 4 to 20 mM. This inhibition was correlated with molecular weight (MW) of RE fractions. Higher MW fraction (> 10 kDa) reduced the aggregation most. RE also significantly promoted the dissolution of CuONPs and lower MW fraction (< 3 kDa) RE mainly contributed to this process. Also, Cu accumulation in plant root tissues was significantly enhanced by RE. This study provides useful insights into the interactions between RE and CuONPs, which is of significance for the safe use of CuONPs-based antimicrobial products in agricultural production. Wheat root exudates (RE) had high reducing ability to convert Ag+ to nAg under light exposure. Photo-induced reduction of Ag+ to nAg in pristine RE was mainly attributed to the 0-3 kDa fraction. Quantification of the silver species change over time suggested that Cl⁻ played an important role in photoconversion of Ag+ to nAg through the formation and redox cycling of photoreactiveAgCl. Potential electron donors for the photoreduction of Ag+ were identified to be reducing sugars and organic acids of low MW. Meanwhile, the stabilization of the formed particles was controlled by both low (0-3 kDa) and high (>3 kDa) MW molecules. This work provides new information for the formation mechanism of metal nanoparticles mediated by RE, which may further our understanding of the biogeochemical cycling and toxicity of heavy metal ions in agricultural and environmental systems. Copper sulfide nanoparticles (CuSNPs) at 1:1 and 1:4 ratios of Cu and S were synthesized, and their respective antifungal efficacy was evaluated against the pathogenic activity of Gibberellafujikuroi(Bakanae disease) in rice (Oryza sativa). In a 2-d in vitro study, CuS decreased G. fujikuroiColony- Forming Units (CFU) compared to controls. In a greenhouse study, treating with CuSNPs at 50 mg/L at the seed stage significantly decreased disease incidence on rice while the commercial Cu-based pesticide Kocide 3000 had no impact on disease. Foliar-applied CuONPs and CuS (1:1) NPs decreased disease incidence by 30.0 and 32.5%, respectively, which outperformed CuS (1:4) NPs (15%) and Kocide 3000 (12.5%). CuS (1:4) NPs also modulated the shoot salicylic acid (SA) and Jasmonic acid (JA) production to enhance the plant defense mechanisms against G. fujikuroiinfection. These results are useful for improving the delivery efficiency of agrichemicals via nano-enabled strategies while minimizing their environmental impact, and advance our understanding of the defense mechanisms triggered by the NPs presence in plants.
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