Driving Force of the Initial Step in Electrochemical Pt(111) Oxidation
Date
2023-04-05
Authors
Fuchs, Timo
Briega-Martos, Valentín
Fehrs, Jan O.
Qiu, Canrong
Mirolo, Marta
Yuan, Chentian
Cherevko, Serhiy
Drnec, Jakub
Magnussen, Olaf M.
Harrington, David A.
Journal Title
Journal ISSN
Volume Title
Publisher
The Journal of Physical Chemistry Letters
Abstract
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.
Description
Keywords
Extraction, Oxidation, Oxygen, Platinum, Separation science
Citation
Fuchs, T., Briega-Martos, V., Fehrs, J. O., Qiu, C., Mirolo, M., Yuan, C., Cherevko, S., Drnec, J., Magnussen, O. M., & Harrington, D. A. (2023). Driving Force of the Initial Step in Electrochemical Pt(111) Oxidation. The Journal of Physical Chemistry Letters, 3589–3593. https://doi.org/10.1021/acs.jpclett.3c00520