One- or Two-Electron Water Oxidation, Hydroxyl Radical, or H2O2 Evolution | Zendy

Samira Siahrostami | Zendy; Guo-Ling Li | Zendy; Venkatasubramanian Viswanathan | Zendy; Jens K. Nørskov | Zendy

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One- or Two-Electron Water Oxidation, Hydroxyl Radical, or H₂O₂ Evolution

Author(s) -

Samira Siahrostami,

Guo-Ling Li,

Venkatasubramanian Viswanathan,

Jens K. Nørskov

Publication year - 2017

Publication title -

the journal of physical chemistry letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.563

H-Index - 203

ISSN - 1948-7185

DOI - 10.1021/acs.jpclett.6b02924

Subject(s) - hydrogen peroxide , catalysis , electrocatalyst , radical , chemistry , electrochemistry , hydroxyl radical , photochemistry , selectivity , peroxide , inorganic chemistry , organic chemistry , electrode

Electrochemical or photoelectrochemcial oxidation of water to form hydrogen peroxide (H 2 O 2 ) or hydroxyl radicals ( • OH) offers a very attractive route to water disinfection, and the first process could be the basis for a clean way to produce hydrogen peroxide. A major obstacle in the development of effective catalysts for these reactions is that the electrocatalyst must suppress the thermodynamically favored four-electron pathway leading to O 2 evolution. We develop a thermochemical picture of the catalyst properties that determine selectivity toward the one, two, and four electron processes leading to • OH, H 2 O 2 , and O 2 .

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