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Full-Text Articles in Engineering
Mixed Metal Oxide Nanowires Via Solid State Alloying., Veerendra Atla
Mixed Metal Oxide Nanowires Via Solid State Alloying., Veerendra Atla
Electronic Theses and Dissertations
Mixed metal oxide materials with composition control find applications in energy conversion and storage processes such as heterogenous catalysis, photoelectrochemical catalysis, electrocatalysis, thermal catalysis, and lithium-ion batteries. Mixed metal oxides and/or complex oxides with composition control and in one-dimensional form as nanowires could be interesting to various catalysis applications due to control on single crystal surfaces, active sites, acidity versus basicity site density, and oxygen vacancies. The major challenge is to synthesize mixed metal oxide nanowires beyond binary oxides with composition control. In this dissertation, solid state alloying of binary oxide nanowires with solid and liquid precursors is studied to …
Scalable Production And Applications Of Metal Oxide Nanowires., Tu Quang Nguyen
Scalable Production And Applications Of Metal Oxide Nanowires., Tu Quang Nguyen
Electronic Theses and Dissertations
Metal oxide nanowires are materials of interest in number of applications such as lithium ion batteries, solar cells, catalyst support, and gas sensing due to their unique charge transport properties and short diffusion length scales. To incorporate nanowires for any applications, one would need hundreds of grams to kilograms of these nanowires. However, state-of-the-art methods for producing metal oxide nanowires are limited to producing only milligrams to a gram in a batch. Hence, there is a need to develop scalable and cost effective processes and reactors to address this challenge. Direct gas phase oxidation of zinc metal powders using a …
Phase Transformation Studies Of Metal Oxides To Dichalcogenides In 1-D Structures., Dustin Ray Cummins 1987-
Phase Transformation Studies Of Metal Oxides To Dichalcogenides In 1-D Structures., Dustin Ray Cummins 1987-
Electronic Theses and Dissertations
Recently, the use of materials with nanoscale morphologies has expanded, particularly with applications in energy conversion, catalysis, and energy storage. One drawback to single crystalline nanomaterials, especially 1D nanowires, is the difficulty in synthesizing these compounds, as the material chemistry becomes more complicated. Metal oxide nanowires can be synthesized easily and can be produced in relatively large quantities. However, more complex materials, such as metal chalcogenides, cannot typically be synthesized using facile methods, and currently very few techniques involve scalable methods. Phase transformation of metal oxides nanowires to form metal sulfides and selenides by gas-solid reactions is one viable route …
Fabrication Of A Thin Silver Nanowire Composite Film And Investigation Of A Patterning Technique., Richard S. Korte 1991-
Fabrication Of A Thin Silver Nanowire Composite Film And Investigation Of A Patterning Technique., Richard S. Korte 1991-
Electronic Theses and Dissertations
Electrically conductive polymers encompass an exciting field of research for applications in dye-sensitized solar cells (DSSC’s). DSSC’s possess several advantages over other types of solar cells. They offer the potential for high quantum efficiency, solar conversion efficiency approaching that of traditional silicon panels, rapid charge transfer kinetics for photo-excited electrons, mechanical flexibility, and cost efficient manufacturing processes. However, key drawbacks to their large scale production and performance lifetime lie in their reliance on costly indium tin oxide (ITO), fluorinated tin oxide (FTO), and platinum for electrode materials, and the mechanical fragility inherent to a liquid electrolyte layer component. Much of …