title: One- or Two-Electron Water Oxidation, Hydroxyl Radical, or H2O2Evolution.
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 O2evolution. 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.
authors.affiliation: SUNCAT Center for Interface Science and Catalysis, Department of Chemical Engineering, Stanford University , 443 Via Ortega, Stanford, California 94305, United States.
authors.forename: Samira
authors.identifier: http://orcid.org/0000-0002-1192-4634
authors.initials: S
authors.lastname: Siahrostami
authors.affiliation: SUNCAT Center for Interface Science and Catalysis, SLAC National Accelerator Laboratory , 2575 Sand Hill Road, Menlo Park, California 94025, United States.|School of Physics and Engineering, Henan University of Science and Technology , Luoyang 471023, China.
authors.forename: Guo-Ling
authors.identifier: http://orcid.org/0000-0002-1703-3699
authors.initials: GL
authors.lastname: Li
authors.affiliation: Department of Mechanical Engineering, Carnegie Mellon University , 5000 Forbes Avenue, Pittsburgh, Pennsylvania 15213, United States.
authors.forename: Venkatasubramanian
authors.identifier: http://orcid.org/0000-0003-1060-5495
authors.initials: V
authors.lastname: Viswanathan
authors.affiliation: SUNCAT Center for Interface Science and Catalysis, Department of Chemical Engineering, Stanford University , 443 Via Ortega, Stanford, California 94305, United States.|SUNCAT Center for Interface Science and Catalysis, SLAC National Accelerator Laboratory , 2575 Sand Hill Road, Menlo Park, California 94025, United States.
authors.forename: Jens K
authors.initials: JK
authors.lastname: Nørskov