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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 108 for “"oxygen evolution"”.
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The Bicarbonate Ion and Photosynthetic Oxygen Evolution
Made available in DSpace on 2015-05-14T14:57:43Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 7511547.PDF: 2794550 bytes, checksum: f66cdd863e1bc04a3001e322e1931def (MD5) Previous issue date: 1974
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The Role of Manganese in Photosynthetic Oxygen Evolution
Made available in DSpace on 2015-05-14T15:10:53Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 7804201.PDF: 6751985 bytes, checksum: d0f71d5619bc441e34dbb57a2e5dd067 (MD5) Previous issue date: 1977
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Rational design strategies for oxide oxygen evolution electrocatalysts
Understanding and mastering the kinetics of oxygen electrocatalysis is instrumental to enabling solar fuels, fuel cells, electrolyzers, and metal-air batteries. Non-precious transition metal oxides show promise as cost-effective materials in such devices. Leveraging the wealth of solid-state …
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Amorphous Ni-based Alloys as Alkaline Oxygen Evolution Electrocatalysts
… and CO2 conversion, is hindered by sluggish oxygen evolution reaction (OER) kinetics. Amorphous alloys display enhanced OER kinetics and stability over their crystalline counterparts but traditionally have had limited geometries (ribbons, flakes) due to material processing requirements tied …
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Oxygen evolution mediated by co-based thin film electrocatalysts
… preparation of a cobalt-based catalyst for the oxygen evolution reaction (OER) is described and details of its structure, valency, mechanism of action, and mechanism of formation at intermediate pH are elaborated. The catalyst is obtained as an electronically conductive, porous thin film by …
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Development of complex metal oxide electrocatalysts for oxygen evolution reaction
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2024-05-01
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Ruthenium-Chromium Oxide Aerogels Oxygen Evolution Electrocatalysts: Structure, Activity and Stability
… activity and stability are needed for the anodic oxygen evolution reaction (OER) that generate hydrogen and oxygen from water. Ruthenium-oxide based catalysts have shown the highest reported activities of any acidic OER catalysts, but their instability is a major roadblock for wider use. In this …
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Design of active, stable, and earth-abundant acidic oxygen evolution catalysts
… splitting of water to hydrogen and oxygen is crucial for the production of inexpensive, sustainable, and carbon-neutral fuels for future global energy requirements. Of the two half-reactions for water splitting, developing catalysts for the oxygen evolution reaction (OER) is a …
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Mesoporous oxides as efficient catalysts for the electrocatalytic oxygen evolution reaction (OER)
… 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. In this thesis, synthesis routes are presented for new mesoporous metal oxide films used as catalytic layers for OER …
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Bimetallic Electrocatalysts on TiO2 -Based Supports for Methanol Oxidation and Oxygen Evolution
… electrocatalysts. For the methanol oxidation and oxygen evolution reaction, a bimetallic structure can be used to enhance kinetics and increase stability. It is desired to support electrocatalysts to disperse nanoparticles on the surface and promote better catalyst utilization. Traditionally, …
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Development of novel electrodes for oxygen evolution reaction towards green hydrogen production
L'abstract è presente nell'allegato / the abstract is in the attachment
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The Mechanism of Chloride Activation of Oxygen Evolution in Spinach Photosystem Ii
… mechanism by which ${\rm Cl}\sp-$ activates the oxygen-evolving complex (OEC) of Photosystem II (PS II) was studied by $\sp{35}{\rm Cl}$-NMR and steady-state measurements of oxygen evolution. This study represents the first attempt to directly monitor ${\rm Cl}\sp-$ binding in spinach. At low …
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Development of new pyrochlore-type electrocatalysts for oxygen evolution reaction in acid
… of acid-stable, active catalysts for the oxygen evolution reaction (OER). In addition to discovering new catalysts, a fundamental understanding of OER activity and stability origin is also critical. This dissertation focuses on: (1) identifying active and acid-stable OER catalysts in …
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Surface structural changes of perovskite oxides during oxygen evolution in alkaline electrolyte
… are among the most active catalysts for the oxygen evolution reaction (OER) in alkaline solution reported to date. In this work it is shown via high resolution transmission electron microscopy (HRTEM) and Raman spectroscopy that oxides such as BSCF82 rapidly undergoes amorphization at its …
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Investigating direct alkaline seawater electrolysis and its impact on the oxygen evolution reaction
… is the competition at the anode between the oxygen evolution reaction (OER) and the corrosive chlorine oxidation reaction (ClOR). An evaluation of earth-abundant OER catalysts and their interactions with seawater using advanced electrochemical and materials characterisation techniques is …
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Atom-by-atom designs of metal oxide catalysts for the oxygen evolution reaction
… energy technologies is essential. The oxygen evolution reaction (OER) holds great promise, as it enables the production of green chemicals, hydrogen gas, and pure metals electrolytically from their oxides, with oxygen as the sole byproduct. However, OER suffers from slow reaction …
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Nanoscale heterojunctions of transition metal oxide and silicon for high-efficiency oxygen evolution reaction
… energy storage into hydrogen, however, is oxygen evolution reaction (OER) because of its high overpoential and the complexity of surface structures and reaction mechanisms. To overcome these obstacles, researchers have approached in two ways: (i) searching for the best materials with the …
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THE EFFECT OF ALTERNATING DISTRIBUTION OF TRANSITION METALS IN LAYERED MATERIALS ON OXYGEN EVOLUTION CATALYSIS
… of heterogeneous catalysts to facilitate the oxygen evolution reaction (OER). Considering the industrial feasibility for this reaction, first-row transition-metal-based materials are good candidates since they are cheap, abundant and possess variable oxidation states. However, most of them …
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Study of TaC Supported Ir-Based Oxygen Evolution Reaction Electrocatalysts Synthesized by Surfactant-Mediated Method
… carbide (TaC) as a potential support for oxygen evolution reaction (OER) electrocatalysts were investigated. It was first ball milled for 7 and 14 days in order to decrease the particle size and increase the surface area. The larger the surface area of a support, the better the dispersion …
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