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 10 of 10 for “"metal oxide surface"”.
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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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Design and construction of rigs for studying surface condensation and creating anodized metal oxide surfaces
… design and construction of a rig for studying surface condensation and a rig for creating anodized metal oxides (AMOs). The condensation rig characterizes condensation for different surfaces; this is done with the use of known heat transfer principles to calculate characteristic heat fluxes and …
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Electrical properties of polyimides modified with metal salts
… goal, polyimide films have been modified with metal salts and metal complexes. Depending upon processing conditions, the films contain ionic species uniformly distributed throughout their bulk, or are highly anisotropic structures containing near-surface metal or metal oxide. Evaluation of …
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Formation and Stabilization of Combustion-Generated Environmentally Persistent Free Radicals on Transition Metal Oxides Supported on Silica
… and hydroxy-substituted benzenes on transition metal oxide surface under post-combustion conditions. This manuscript reports the formation of EPFRs on silica particles containing 5% Fe(III)2O3, Ni(II)O, and Zn(II)O. The EPFRs are formed by the chemisorption of substituted aromatic molecular …
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Charge Transfer at Metal Oxide/Organic Interfaces
Interfacial charge transfer between metal oxides and organic semiconductors has been found to limit the efficiency of organic optoelectronic devices. Although a number of investigations of inorganic/organic systems exist, very few generally applicable rules for oxide/organic interfaces have been …
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Dynamics of three-phase systems: Bubbles, droplets and their interactions with surfaces
… bubbles and their interactions with the surface are not well known, and lack of experimental measurements of the interaction with surfaces has led to the development of countless competing numerical models. Experimentally, bubbles provide a challenge because they are fast and stochastic, …
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Improving Photocatalytic Hydrogen Production of Ru,Rh,Ru Supramolecular Complexes in Aerobic Aqueous Solutions
… aqueous solution due to quenching of the metal-to-ligand charge transfer (MLCT) excited-state under these conditions. Herein, we report the groundbreaking use of polyelectrolytes to increase efficiency of supramolecular photocatalysts in solar hydrogen production schemes under aqueous …
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Characterization and control of lithium-ion battery interfaces
… stability to the battery and forms on the surface of the electrodes upon initial battery cycling. Chapter 4 will show an operando approach using vibrational sum-frequency (SFG) spectroscopy (a surface sensitive technique) to observe the real time growth of one of the main components of the …
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Geometric and Electronic Structure Sensitivity of Methyl and Methylene Reactions on α-Cr₂O₃ and α-Fe₂O₃ surfaces
… electronic effects in hydrocarbon reactions over metal oxides have been examined by comparing the reactions of methyl (-CH₃) and methylene (=CH₂) fragments on three different oxide single crystal surfaces: α-Cr₂O₃(101̅2), α-Cr₂O₃(0001), and α-Fe₂O₃(101̅2). The intermediates have been generated …
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Metal Oxide Reactions in Complex Environments: High Electric Fields and Pressures above Ultrahigh Vacuum
Metal oxide reactions at metal oxide surfaces or at metal-metal oxide interfaces are of exceptional significance in areas such as catalysis, micro- and nanoelectronics, chemical sensors, and catalysis. Such reactions are frequently complicated by the presence of high electric fields and/or …