Driving Force of the Initial Step in Electrochemical Pt(111) Oxidation.

Fuchs, Timo; Briega-Martos, Valentín; Fehrs, Jan O; Qiu, Canrong; Mirolo, Marta; Yuan, Chentian; Cherevko, Serhiy; Drnec, Jakub; Magnussen, Olaf M; Harrington, David A

Fuchs, Timo; Briega-Martos, Valentín; Fehrs, Jan O; Qiu, Canrong; Mirolo, Marta; Yuan, Chentian; Cherevko, Serhiy; Drnec, Jakub; Magnussen, Olaf M; Harrington, David A.

Afiliación

Fuchs T; Institut für Experimentelle und Angewandte Physik, Christian-Albrechts-Universität zu Kiel, Olshausenstrasse 40, 24098 Kiel, Germany.
Briega-Martos V; Forschungszentrum Jülich GmbH, Helmholtz Institute Erlangen-Nürnberg for Renewable Energy (IEK-11), Erlangen 91058, Germany.
Fehrs JO; Institut für Experimentelle und Angewandte Physik, Christian-Albrechts-Universität zu Kiel, Olshausenstrasse 40, 24098 Kiel, Germany.
Qiu C; Institut für Experimentelle und Angewandte Physik, Christian-Albrechts-Universität zu Kiel, Olshausenstrasse 40, 24098 Kiel, Germany.
Mirolo M; Experimental Division, European Synchrotron Radiation Facility, 71 Avenue des Martyrs, 38000 Grenoble, France.
Yuan C; Chemistry Department, University of Victoria, Victoria, British Columbia V8W 2Y2, Canada.
Cherevko S; Forschungszentrum Jülich GmbH, Helmholtz Institute Erlangen-Nürnberg for Renewable Energy (IEK-11), Erlangen 91058, Germany.
Drnec J; Experimental Division, European Synchrotron Radiation Facility, 71 Avenue des Martyrs, 38000 Grenoble, France.
Magnussen OM; Institut für Experimentelle und Angewandte Physik, Christian-Albrechts-Universität zu Kiel, Olshausenstrasse 40, 24098 Kiel, Germany.
Harrington DA; Chemistry Department, University of Victoria, Victoria, British Columbia V8W 2Y2, Canada.

J Phys Chem Lett ; 14(14): 3589-3593, 2023 Apr 13.

Article en En | MEDLINE | ID: mdl-37018542

RESUMEN

The first step of electrochemical surface oxidation is extraction of a metal atom from its lattice site to a location in a growing oxide. Here we show by fast simultaneous electrochemical and in situ high-energy surface X-ray diffraction measurements that the initial extraction of Pt atoms from Pt(111) is a fast, potential-driven process, whereas charge transfer for the related formation of adsorbed oxygen-containing species occurs on a much slower time scale and is evidently uncoupled from the extraction process. It is concluded that potential plays a key independent role in electrochemical surface oxidation.

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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: J Phys Chem Lett Año: 2023 Tipo del documento: Article País de afiliación: Alemania Pais de publicación: Estados Unidos

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