Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 31 for “"Metal oxide nanoparticles"”.
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Synthesis and characterization of metal oxide nanoparticles
Nanoparticles of CuO, Co3O4 and Mn5O 8 were prepared via sol-gel chemical routes. Thermal treatments of the gels were used to obtain particles of different sizes, as determined by the widths of the Bragg lines in x-ray diffraction. To prepare CuO nanoparticles, a Cu(OH)2 gel was first produced by …
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The Use of Metal and Metal Oxide Nanoparticles Against Biofilms
… hospital disinfectants has been well reported. Metal and metal oxide nanoparticles (NP) such as silver (Ag), copper (Cu), zinc oxide (ZnO) and copper oxide (CuO) exhibit antimicrobial properties against various pathogens. Methods: Biofilm formation of Pseudomonas aeruginosa and Staphylococcus …
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Nonaqueous Synthesis of Metal Oxide Nanoparticles and Their Surface Coating
… kinds of technologically interesting crystalline metal oxide nanoparticles via high temperature nonaqueous solution processes and the formation of core-shell structure metal oxide composites using some of these nanoparticles as the core with silica, titania or polymer as shell via a modified …
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Fate and Transformation of Metal-(Oxide) Nanoparticles in Wastewater Treatment
… the novel physicochemical characteristics of nanoparticles (NPs) to enhance consumer products and technologies in ways superior to their bulk counterparts. Escalating production and use of NPs will unavoidably lead to release and exposure to environmental systems. This introduction of emerging …
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Synthesis and functionalisation of metal and metal oxide nanoparticles for theranostics
Metal and metal oxide nanoparticles including calcium oxide, gold, and superparamagnetic iron oxide nanoparticles (SPIOs) were synthesised using a range of techniques including reduction, co-precipitation and spinning disc technology. SPIOs were primarily synthesised via a co-precipitation method …
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Nonaqueous synthesis of metal oxide nanoparticles and their assembly into mesoporous materials
… kinds of technologically interesting crystalline metal oxide nanoparticles via nonaqueous sol-gel process and the formation of mesoporous metal oxides using some of these nanoparticles as building blocks via evaporation induced self-assembly (EISA) technique. In the first part, the experimental …
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Electrochemical Studies and Antimicrobial Properties of Synthesized Green Mediated Metal Oxide Nanoparticles
Nanoparticles synthesized through alternate biological methods are known to be more biocompatible with no toxic effects. The biological method of synthesis relies on the ability of organic compounds to reduce metal ions and stabilize them into nanoparticles. In this study, a green approach was …
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Geometrical and electronic structure of metal oxide nanoparticles on silica and alumina
… nanometer-scale combustion-generated nanoparticles cause demonstrable health effects. It is essential to understand the chemical characteristics of these nanoparticles. Since combustion-generated nanoparticles arise in complex mixtures, we employed a dendrimeric method to generate …
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Metal Oxide Nanoparticles: Optical Properties and Interaction with Chemical Warfare Agent Simulants
… Inert gas-phase condensation synthesis of metal oxide nanoparticles was used to develop materials to explore the optical and chemical properties of metal oxide nanoparticles. One potential application for nanomaterials is use in optical applications. The possibility of interparticle energy …
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Nichtwässrige Synthese und Bildungsmechanismus von Übergangsmetalloxid-Nanopartikeln = Nonaqueous synthesis of transition-metal oxide nanoparticles and their formation mechanism
… the nonaqueous synthesis of binary and ternary metal oxide nanoparticles is investigated for a number of technologically important materials. A strong focus was put on studying the reaction mechanisms leading to particle formation upon solvothermal treatment of the precursors, as an …
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Toxicological effects of metal oxide nanoparticles in combination with microbial components and inflammatory mediators on intestinal epithelial cells
… of environmental factors, more specifically metal oxide nanoparticles found in the environment and food products, on the maintenance of the intestinal epithelial barrier. Furthermore, there are no studies investigating the impact of metal oxide nanoparticles in combination with microbial …
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Size Controlled Metal Oxide Nanoparticles:Synthesis, Characterization, and Application to Catalysis
… focuses on the synthesis of size-controlled metal oxide nanoclusters (< 10 nm) on amorphous silica and their catalytic performance in thermal degradation of chlorinated benzenes with regard to the cluster size effect. Furthermore, with the concern that metal can condense as the nano-size …
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Application and Performance of High Entropy Metal Nanoparticles in the Field of Antibacterial
… explores the potential of various different metal particles in antibacterial aspects and reviews a new method for synthesizing high-entropy alloy oxide nanoparticles (HEO NPs), which is expected to possess the advantages of multiple metals while retaining the antibacterial properties of …
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Hafnium Dioxide Nanoparticle Thin Film Morphology and Reactivity with Dimethyl Methylphosphonate
… reactions that occur on the surface of hafnium dioxide. Metal oxide and metal-oxide nanoparticles have been shown to decompose organophosphonate molecules. In this study, high surface area hafnium oxide nanoparticles are synthesized via laser ablation. This creates nanoparticles that are free of …
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Formation of Environmentally Persistent Free Radicals on the Surface of Iron Oxide and Interior of Montmorillonite Clay
… dioxins and furans. EPFRs are known to form on metal oxide nanoparticles’ surface, including iron (III) oxide, and within cation-rich clays. Plane-wave based ab initio computational methods were used to study the mechanism of formation of EPFRs on the 0001-iron terminated surface of iron (III) …
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Nanoparticle-based electrochemical sensors for the detection of lactate and hydrogen peroxide
… for the detection of lactate and hydrogen peroxide were constructed by exploiting the physicochemical properties of metal ad metal oxide nanoparticles. This study can be divided into two main sections. While chapter 2, 3, and 4 report on the construction of electrochemical lactate biosensors …
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Laser Vaporization Methods for the Synthesis of Metal and Semiconductor Nanoparticles; Graphene, Doped Graphene and Nanoparticles Supported on Graphene
… laser vaporization methods for the synthesis of metal and semiconductor nanoparticles, graphene, B- and N-doped graphene, and metal and semiconductor nanoparticles supported on graphene. These methods include the Laser Vaporization Controlled Condensation (LVCC) approach, which has been used in …
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Tailoring the (bio)activity of polymeric and metal oxide nano- and microparticles in biotic and abiotic environments
Polymeric and metal oxide micro- and nanoparticles are being increasingly introduced into biomedical applications such as tissue engineering as well as in consumer products, which has boosted extensive research towards developing predictive paradigms of their (bio-)activity. The core hypotheses …
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Applications for nanomaterials in critical technologies
… to contaminated ground water. Development of metal oxide nanoparticles, as viricidal materials is of technological and fundamental scientific importance. Nanoparticles with high surface areas and ultra small particle sizes have dramatically enhanced efficiency and capacity of virus …
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