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

Samira Siahrostami, Guo Ling Li, Venkatasubramanian Viswanathan, Jens K. Nørskov*

*Corresponding author for this work

Research output: Contribution to journalLetterpeer-review

Abstract

Electrochemical or photoelectrochemcial oxidation of water to form hydrogen peroxide (H2O2) 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 O2 evolution. We develop a thermochemical picture of the catalyst properties that determine selectivity toward the one, two, and four electron processes leading to OH, H2O2, and O2

Original languageEnglish
JournalJournal of Physical Chemistry Letters
Volume8
Issue number6
Pages (from-to)1157-1160
Number of pages4
ISSN1948-7185
DOIs
Publication statusPublished - 2017

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