Dissolution of Platinum Single Crystals in Acidic Medium

Sandbeck DJ, Brummel O, Mayrhofer KJ, Libuda J, Katsounaros I, Cherevko S (2019)

Publication Type: Journal article

Publication year: 2019

Journal

DOI: 10.1002/cphc.201900866

Abstract

Platinum single crystal basal planes consisting of Pt(111), Pt(100), Pt(110) and reference polycrystalline platinum Pt(poly) were subjected to various potentiodynamic and potentiostatic electrochemical treatments in 0.1 M HClO4. Using the scanning flow cell coupled to an inductively coupled plasma mass spectrometer (SFC-ICP-MS) the transient dissolution was detected on-line. Clear trends in dissolution onset potentials and quantities emerged which can be related to the differences in the crystal plane surface structure energies and coordination. Pt(111) is observed to have a higher dissolution onset potential while the generalized trend in dissolution rates and quantities was found to be Pt(110)>P(100)≈Pt(poly)>Pt(111).

Authors with CRIS profile

Olaf Brummel Lehrstuhl für Physikalische Chemie II Jörg Libuda Lehrstuhl für Katalytische Grenzflächenforschung

Involved external institutions

Forschungszentrum Jülich / Research Centre Jülich (FZJ)

Germany (DE)

How to cite

APA:

Sandbeck, D.J., Brummel, O., Mayrhofer, K.J., Libuda, J., Katsounaros, I., & Cherevko, S. (2019). Dissolution of Platinum Single Crystals in Acidic Medium. ChemPhysChem. https://doi.org/10.1002/cphc.201900866

MLA:

Sandbeck, Daniel J.S., et al. "Dissolution of Platinum Single Crystals in Acidic Medium." ChemPhysChem (2019).

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