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Water oxidation is one of the half reactio … Water oxidation is one of the half reactions of water splitting: 2H2O → O2 + 4H+ + 4e− Oxidation (generation of dioxygen) 4H+ + 4e− → 2H2 Reduction (generation of dihydrogen) 2H2O → 2H2 + O2 Total Reaction Of the two half reactions, the oxidation step is the most demanding because it requires the coupling of 4 electron and proton transfers and the formation of an oxygen-oxygen bond. This process occurs naturally in plants photosystem II to provide protons and electrons for the photosynthesis process and release oxygen to the atmosphere, as well as in some electrowinning processes. Since hydrogen can be used as an alternative clean burning fuel, there has been a need to split water efficiently. However, there are known materials that can mediate the reduction step efficiently therefore much of the current research is aimed at the oxidation half reaction also known as the Oxygen Evolution Reaction (OER). Current research focuses on understanding the mechanism of OER and development of new materials that catalyze the process.f new materials that catalyze the process.
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| rdfs:comment |
Water oxidation is one of the half reactions of water splitting: 2H2O → O2 + 4H+ + 4e− Oxidation (generation of dioxygen) 4H+ + 4e− → 2H2 Reduction (generation of dihydrogen) 2H2O → 2H2 + O2 Total Reaction
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Heterogeneous water oxidation
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