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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 20 of 122 for “"electrocatalytic"”.
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Electrocatalytic treatment of wastewaters
The electrocoagulation tests were carried out considering both relatively high metal contents (in the range of ppm) and very low metal concentrations (in the range of ppb). The experiments with very low metal concentrations were carried out in the framework of a collaboration project with the …
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ELECTROCATALYTIC PROCESSES FOR ENERGY STORAGE & CONVERSION
… they have been actively explored for various electrocatalytic activities.</p> <p>This report details the research on the Carbon dioxide electroreduction and water splitting using metal chalcogenides as electrocatalyst also elaborating on the connection of the composition and the catalytic …
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Electrocatalytic dioxygen reduction with copper complexes
The oxygen reduction reaction (ORR) is the four electron and four proton reaction with oxygen to form water. This reaction, while very exothermic (-474 kJ/mol), remains a difficult reaction to harness due to the high O-O bond strength (485 kJ). Many proteins in nature couple the ORR to various …
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ELECTROCATALYTIC WATER OXIDATION BY METAL ORGANIC FRAMEWORKS
CO(MN, NI) (BTC), CO(TP) AND CO(PZDC) METAL ORGANIC FRAMEWORKS (MOFS) WERE SYNTHESIZED AND TESTED AS ELECTROCATALYSTS FOR WATER OXIDATION. AMONG THEM, CO(BTC) SHOWED EXTRAORDINARY ACTIVITY. THE CATALYTIC ONSET OVERPOTENTIAL OF CO(BTC) IS 400 MV AND THE STABILITY OF CO(BTC) LASTS AS LONG AS 75 MIN …
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Self-assembly of bioactive or electrocatalytic polyaspartamide nanoparticles
… to target diseased tissue and also support electrocatalytic activities of metallic particles. Successful use of nanoparticles in these biological and energy applications greatly depends on the ability to control the structural integrity and the surface functionality of nanoparticles. …
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Designing Two-Dimensional Nanomaterials for Electrocatalytic Clean Energy Conversion
… for hydrogen generation is significant. Electrocatalytic water splitting using renewable energy is one of the best ways to obtain high-purity hydrogen and the process emits no carbon dioxide. Electrocatalytic reactions occur on the surface of electrode materials. Consequently, …
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Electrocatalytic Conversion of Carbon Dioxide to Value-Added Chemicals
… dioxide (CO2). In this thesis, avenues for electrocatalytically upgrading carbon dioxide are investigated. A comprehensive review on heterogeneous molecular catalysts for aqueous electrocatalytic CO2 reduction was written to synthesize the literature to discern common trends regarding the …
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Electrocatalytic CO2 Reduction by Self-Assembled Monolayers of Metal Porphyrins
The main issue hindering the successful utilization of CO2 electroreduction processes in industry is the lack of selective, durable, and efficient catalysts. We design a new heterogenous molecular architecture for CO2 electrocatalysts by attaching alkyne-terminated metal (Fe, Co) porphyrins via …
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Electrocatalytic Oxygen and Nitrate Reduction Reactions Using Cu-Based Electrodes
… The focus of this dissertation is on the electrocatalytic reduction of oxygen (O 2 ) and nitrate (NO 3 -) to water (H 2 O) and ammonia (NH 3 ), respectively, using molecular- and surface-based Cu electrocatalysts. The oxygen reduction reaction (ORR) is important due to its application in …
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Multifunctioning Electrocatalytic Cathodes for Lithium-Air and Lithium-Oxygen Batteries
… was found to be effective in enhancing the electrocatalytic activity in binary oxides. During the study, the highest discharge capacity of 25162 mAgh-1 at a current density of 400 mAg-1 was obtained for the heterogeneous hollow catalytic microstructure of NiCoP/ NiCo2S4/ NiCo2O4. The in-situ …
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Mechanistic Electrochemistry: Investigations of Electrocatalytic Mechanisms for H2S Detection Applications
… time. The novel strategy adopts the use of an electrocatalytic (EC') mechanism by using a redox mediator to facilitate the reaction with sulphide in aqueous solutions. In order to support the analysis of FTACV, other electrochemical analytical techniques, cyclic voltammetry (CV) and linear …
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Towards first-principles prediction of electrocatalytic activity of ABO₃ perovskites
… to the environment, which in turn alters electrocatalytic activity. These effects are dramatically important for those highly efficient ABO 3 compounds, for which we showed that the lattice oxygen becomes an active participant in the OER mechanism. Combining this new mechanism (the lattice …
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Controlling Electrocatalytic Interfaces using Thin Films and Nanostructures for Energy Applications
The release of greenhouse gases such as CO2 due to various human activities and the use of fossil fuels causes climate change and increases global temperature. For this reason, we must create new technologies that help shift energy production away from fossil fuels to renewable energy sources. Over …
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Production of Chemicals from Air Through Electrocatalytic Nitrogen and Oxygen reduction
… candidate for ambient NRR. The high NRR electrocatalytic activity of the Bi NS originates from the sufficient exposure of edge sites coupled with effective p-orbital electron delocalization. Secondly, trace amount of nitrate and nitrite were found to exist in some lithium salts such as …
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Mesoporous oxides as efficient catalysts for the electrocatalytic oxygen evolution reaction (OER)
… The generation of hydrogen can be realised by electrocatalytic water splitting. However, the efficiency of water electrolysers is limited by the slow kinetics of oxygen evolution reaction (OER). An increase in mass based OER activity is mandatory for a lower capital cost of electrolyser cells. …
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Synthesis and Electrocatalytic Properties of Structure Engineered First-Row Transition Metal Derivatives
Hydrogen is a green energy carrier, producing only water when combusted, and a hydrogen economy has been considered the ideal green economy for human society. Water electrolysis can produce high-purity hydrogen on a large scale, and if the electricity used in water electrolysis is obtained from …
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En route towards advanced catalyst materials for the electrocatalytic water splitting reaction
… and their application 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 …
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Low temperature electrocatalytic reduction of carbon dioxide utilizing room temperature ionic liquids
Artificial photosynthesis, where one uses electricity from the sun, or wind, to convert water and carbon dioxide into a hydrocarbon fuel could provide a viable route to renewable fuels but so far the results have been stymied because of the lack of a CO2 conversion catalyst that operates at low …
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Low temperature electrocatalytic reduction of carbon dioxide utilizing room temperature ionic liquids
Artificial photosynthesis, where one uses electricity from solar, or wind, to convert water and carbon dioxide into a hydrocarbon fuel could provide a viable route to renewable fuels but so far the results have been stymied because of the lack of a CO2 conversion catalyst that operates at low …
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