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 15 of 15 for “"water splitting reaction"”.
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En route towards advanced catalyst materials for the electrocatalytic water splitting reaction
… as catalysts for the electrocatalytic water splitting reaction. In order to breathe life into this technology, cost-efficient, stable and efficient catalysts are imploringly desired. In this manner, the preparation of Mn-, N-, S-, P-, and C-containing nickel materials has been …
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High temperature ceramic membrane for CO₂ reuse and syngas production
… have also been demonstrated to produce H2 by water splitting. During the reaction, H2 is produced on the membrane feed side and the resultant oxygen is transported to the membrane sweep side, thus shifting the water splitting reaction towards hydrogen production. Under the same principle, CO …
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Density functional theory calculations on materials in photocatalysis
… harvest the solar energy, photocatalytic water splitting reaction, which transfers the solar energy to the chemical energy contained in HH bonding, has drawn vast attention given that hydrogen molecules are environmentally friendly. In this thesis, we report density functional theory (DFT) …
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Investigation of Ni-Ceria Nanocatalysts: Improved Computational Methods Towards Hydrogen Production in Aquaprocessing of Heavy Oil
… (NPs) are promising nanocatalysts for water splitting and water gas shift reactions due to the ability of ceria to temporarily donate oxygen to the catalytic reaction and accept oxygen after the reaction is completed. Therefore, elucidating how different properties of the nanoparticles, …
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Designing high performance overall water splitting electrocatalysts from non-precious metal selenides
… in fuel cells without concern of contaminants. Water splitting reaction to generate H<sub>2</sub> and O<sub>2</sub> is one promising method of converting solar energy into fuels. The major challenge with this technology is the sluggish anodic reaction, oxygen evolution reaction (OER), in …
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Computational Insights Into The Oxygen Evolving Complex Of Photosystem ΙΙ
… cluster that catalyzes the photoactivated water splitting reaction. The OEC is a model system for bio-inspired artificial systems to use solar energy to pull electrons from water to produce fuel. The OEC goes through a cycle of 5 S states storing 4 holes, via electron transfer to P680+, the …
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Metal-TiO2 nanocomposites towards efficient solar-driven photocatalysis
Water, together with energy and food, has been addressed as one of the main urgent problem of humanity. The reduction of fresh clean water sources will definitely lead to huge issues in the next future, especially in developing countries. The conventional wastewater treatments suffer some …
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Design of water-splitting photocatalysts by first principles computations
… thesis focuses on the design of novel inorganic water-splitting photocatalysts for solar applications using first principles computations. Water-splitting photocatalysts are materials that can photo-catalyze the water-splitting reaction under certain conditions. They provide an alternative way to …
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Proton-coupled electron transfer reactions in bio-inspired catalysis
… mediators is photosynthesis, where the slow water splitting reaction and the fast photoinitation of a reaction center are mediated by a Tyr-His redox pair in Photosystem II. Understanding the fundamental PCET processes in Tyr-His models is helpful for the design of photoelectrochemical water …
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Design, fabrication, and application of stimuli-responsive hydrogel actuators
… gels of diverse form. The chemical reaction covalently incorporates a methacrylate-modified ruthenium trisbipyridine (Ru(bpy)32+) monomer within a poly acrylamide (PAAm) gel, modified to provide a flexible chemistry for UV-curable, self-oscillating Belousov-Zhabotinsky (BZ) gels. …
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Macroporous Semiconductors Tantalum Oxide, (Oxy)nitride and Nitride for Photocatalytic Hydrogen Evolution
… if it could be sourced efficiently from water. Photocatalysis using metal-semiconductor composites is potentially a feasible way to make use of solar energy to drive the water splitting reaction to product hydrogen and oxygen. A significant number of studies have been reported in recent …
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Macroporous Semiconductors Tantalum Oxide, (Oxy)nitride and Nitride for Photocatalytic Hydrogen Evolution
… if it could be sourced efficiently from water. Photocatalysis using metal-semiconductor composites is potentially a feasible way to make use of solar energy to drive the water splitting reaction to product hydrogen and oxygen. A significant number of studies have been reported in recent …
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Earth Abundant Catalysts for Water Electrolysis at Low Overpotentials
Water electrolysis via renewable electricity (e.g., wind, solar) provides a carbon neutral route for pure hydrogen production to fuel zero emission power generation devices, such as fuel cells. Deployment of fuel cell vehicles is growing in the US and around the world, coupled with the construction …
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Preparation and investigation of new heterostructures for prospective energetic and biomedical applications
… noble metal tip is capable to catalyze chemical reactions, it is prospected that the developed materials, i.e. CdSe@CdS-Pt octapods, are active as solar conversion devices and photocatalysis, with particular reference to hydrogen production through optimization of the redox process behind the …
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Spectroscopic Characterization of the Water-Oxidation Intermediates in the Ru-Based Catalysts for Artificial Photosynthesis
… convert it into chemical energy by fuel-forming reactions, such as water splitting into hydrogen and oxygen. Ruthenium complexes are among few molecular-defined catalysts capable of water splitting. Insight into the mechanism of their action will help to design future robust and economically …