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 11 of 11 for “"Low temperature synthesis"”.
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ZnO Nanostructures: Low-Temperature Synthesis, Characterisation, Their Potential Application as Gene-Delivery Tools
… This thesis investigates the solution-based synthesis of ZnO nanostructures and their morphological and structural properties. Importantly, in order to achieve the promising structure of ZnO, a systematic investigation of the influence of processing parameters, including solution …
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Ultrasound assisted low-temperature synthesis of TiB2 and Al3Ti particulates in molten aluminum
… KBF<sub>4</sub> salts into the Al melt at high temperatures. Al<sub>3 </sub>Ti particulates can be produced by the direct-melt reaction between solid Ti powders and liquid Al at high temperatures. Generally, a high reaction temperature is always needed to obtain both reinforcements. Some issues, …
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Growth Study and Characterization of TiO2 Based Thin Films for Low Temperature Synthesis of Transparent Conductive Films
… oxide (ITO), which is suffering from scarcity, lower transmittance in the near infrared region, poor chemical stability in hydrogen atmosphere and toxicity. Due to these limitations, there is a huge interest to develop alternative TCOs which possess higher conductivity than indium or that use …
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Low temperature synthesis and properties of lead ferroniobate Pb(Fe<sub>0.5</sub>Nb<sub>0.5</sub>)O₃
… powders were successfully formed by molten salt synthesis using mixture of NaCl and KCI salts. Lower temperatures and shorter times (0.5 hour at 800°C) were needed for single phase PFN formation from molten salts relative to those required for solid-state methods (4 hours at 1000°C). A systematic …
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High Entropy Amorphous and Crystalline Li-Garnet Films for Lithionic Applications
… windows, and non-flammability. However, high-temperature sintering (>1050 °C) is generally required to achieve its highly conductive cubic phase (cLLZO), which raises concerns over processing cost, sustainability, and interface stability with adjacent layers, such as cathodes. Alternative, …
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Investigation of high-performance lithium-ion batteries based on highly conductive Li7La3Zr2O12 solid-state electrolyte and stable electrode-electrolyte interface
… electrolyte/electrode interface stability and low resistance are important to their optimized electrochemical performance of lithium-ion batteries. The goal of this dissertation is to develop high-performance lithium-ion batteries based on LLZO solid-state electrolyte and stable/low resistance …
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Two-dimensional Electronics: From Material Synthesis to Device Applications
… 2D materials are investigated from material synthesis to electronic applications. A comprehensive review of the direct synthesis of graphene on arbitrary substrates with an emphasis on the metal-catalyst-free synthesis is given, followed by a detailed study of the contact engineering in TMDs …
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Understanding and Optimising Carbon Disorder for High-Performance Supercapacitors
… capacitance theory. Nanoporous carbons with lower ID/IG ratios and broader D bands, which indicate smaller graphene-like domains, have higher capacitance, aligning with NMR observations. The correlation between capacitance and ID/IG ratios demonstrates high consistency with the correlation …
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Earth Abundant Catalysts for Water Electrolysis at Low Overpotentials
… catalyst. By utilizing a hot sulfur injection synthesis and adjusting the sulfur concentration, we were able to create one-dimensional (1D) FeS2 wires and two-dimensional (2D) FeS2 discs, unique from the previously known three-dimensional (3D) FeS2 cubes. We found that the catalytic activity of …
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Next Generation Multifunctional Composites for Impact, Vibration and Electromagnetic Radiation Hazard Mitigation
… This study embraces the development of a novel low temperature synthesis technique to grow CNTs on virtually any substrate. The developed method graphitic structures by design (GSD) offers the opportunity to place CNTs in advantageous areas of the composite (e.g., at the ply interface) where …
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Materials development for multicomponent systems with variable oxidation states
In this work, the synthesis by the polymeric steric entrapment method of materials that belong to the M1MnOx and M1Ti2(PO3)4 (M1= Li, Na, K,) families was evaluated. Furthermore, the influence on the physico-chemical characteristics of the powders by processing variables such as the dissolution …