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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 “"reduction catalysis"”.
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Engineering heme-copper and multi-copper oxidases for efficient oxygen reduction catalysis
… large overpotential (500-600 mV) of the oxygen reduction reaction (ORR), which demands a potent ORR catalyst to decrease the overpotential. Towards this goal, my thesis focuses on mimicking the heme-copper oxidase and engineering a multi-copper oxidase for efficient oxygen reduction with high …
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Investigation Of New Ligand Architechtures Towards Proton And Water Reduction Catalysis By Cobalt Complexes
… of the nature of the active species for catalysis enabled us to design the pentadentate oxime ligand which exhibited rich reaction chemistry along with suitable catalytic property in organic solvent. Presence of several polar groups like -OH and -NH and the absence of any aromatic rings …
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Designing interfacial structures for selective electrocatalysis
Selectivity of electrocatalysis in fuel cells stresses on the tolerance of electrode catalysts to cross-over species. A typical polymer electrolyte membrane fuel cell (PEMFC) employs a Nafion-based membrane to separate the Pt-based cathode and anode. Nevertheless, the intrinsic porosity of Nafion …
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FROM SYNTHESIS TO APPLICATION:PORPHYRINS AS VERSATILE COMPOUNDS IN ENERGY, SENSING, AND CATALYSIS
… including disease treatment, sensor technology, catalysis, nonlinear optics, and molecular photovoltaics. The synthesis of porphyrins involves conventional approaches such as the Adler-Longo process and Lindsey's one-flask two-step methodology. Challenges in this process include the generation of …
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Preparation characterisation and evaluation of core shell electrocatalysts for PEMFCs
For oxygen reduction catalysis it has been shown that thin layers of platinum (shell)<br/>over a non-Pt core enhance the activity. In addition surface science studies have found that<br/>overlayers of one metal on another strongly modifies the electrocatalytic properties of the<br/>surface metal. …
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Preparation, characterisation and evaluation of core-shell electrocatalyst for PEMFCs
For oxygen reduction catalysis it has been shown that thin layers of platinum (shell)<br/>over a non-Pt core enhance the activity. In addition surface science studies have found that<br/>overlayers of one metal on another strongly modifies the electrocatalytic properties of the<br/>surface metal. …
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Electrochemical CO2 reduction on Cucurbit[n]uril modified Gold
… interactions remains a major challenge in electrocatalysis more broadly. In this thesis, gold surfaces were functionalised with cucurbit[n]uril (CB[n]) macrocycles to form a hybrid organic-inorganic model system capable of influencing the local chemical environment of gold as a heterogeneous CO2 …
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The Role of Surface Coverage of Reaction Intermediates in Heterogeneous Electrocatalysis
… assumed in the field of heterogeneous electrocatalysis, but this idealistic assumption can lead to predictions far from empirical observations. Herein, we show that fractional coverage of reaction intermediates is key to understanding kinetic behaviors of energy conversion reactions and …
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Small molecule mimics of hydrogenase enzymes: synthesis, protonation, and electrocatalysis
… enzymes called hydrogenases, which catalyze the reduction of protons to dihydrogen, as well as the reverse reaction. The active sites of the two most prevalent hydrogenases contain NiFe or FeFe cores, bound to thiolates, cyanide, and carbon monoxide ligands. These enzymes are also rich in Fe-S …
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Molecular electrocatalysis of hydrogen evolution: catalytic design studied by density functional theory
… molecular hydrogen evolving electrocatalysts. Reduction potentials and pKa’s were calculated for a variety of complexes with density functional theory in conjunction with appropriate experimental references in order to characterize the thermodynamics of the free energy of reaction for proton …
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Metallic and bimetallic catalysts for electrochemical reduction of problematic aqueous anions
… as possible catalysts for the electrochemical reduction of nitrate. Iindium and palladium are the most thoroughly examined metals in this work, but nickel, tin, platinum, thallium, lead, and gallium are also incorporated into the systems investigated. Indium metal is found to perform an …