Growth of Stable Surface Oxides on Pt(111) at Near-Ambient Pressures

Fantauzzi D, Krick Calderon S, Mueller JE, Grabau M, Papp C, Steinrück HP, Senftle TP, van Duin ACT, Jacob T (2017)

Publication Language: English

Publication Status: Published

Publication Type: Journal article, Original article

Publication year: 2017

Journal

Angewandte Chemie International Edition Wiley

Publisher: Wiley-VCH Verlag

Book Volume: 56

Pages Range: 2594-2598

Journal Issue: 10

URI: http://onlinelibrary.wiley.com/wol1/doi/10.1002/anie.201609317/abstract

DOI: 10.1002/anie.201609317

Abstract

Detailed knowledge of the structure and degree of oxidation of platinum surfaces under operando conditions is essential for understanding catalytic performance. However, experimental investigations of platinum surface oxides have been hampered by technical limitations, preventing in situ investigations at relevant pressures. As a result, the time-dependent evolution of oxide formation has only received superficial treatment. In addition, the amorphous structures of many surface oxides have hindered realistic theoretical studies. Using near-ambient pressure X-ray photoelectron spectroscopy (NAP-XPS) we show that a time scale of hours (t≥4 h) is required for the formation of platinum surface oxides. These experimental observations are consistent with ReaxFF grand canonical Monte Carlo (ReaxFF-GCMC) calculations, predicting the structures and coverages of stable, amorphous surface oxides at temperatures between 430–680 K and an O partial pressure of 1 mbar.

Authors with CRIS profile

Sandra Krick Calderon Sonderforschungsbereich 953/3 Synthetische Kohlenstoffallotrope Mathias Grabau Lehrstuhl für Physikalische Chemie II Christian Papp Lehrstuhl für Physikalische Chemie II Hans-Peter Steinrück Lehrstuhl für Physikalische Chemie II

Additional Organisation(s)

Exzellenz-Cluster Engineering of Advanced Materials (EAM)

Involved external institutions

Universität Ulm DE Germany (DE) Princeton University US United States (USA) (US) Pennsylvania State University (Penn State) US United States (USA) (US)

How to cite

APA:

Fantauzzi, D., Krick Calderon, S., Mueller, J.E., Grabau, M., Papp, C., Steinrück, H.-P.,... Jacob, T. (2017). Growth of Stable Surface Oxides on Pt(111) at Near-Ambient Pressures. Angewandte Chemie International Edition, 56(10), 2594-2598. https://doi.org/10.1002/anie.201609317

MLA:

Fantauzzi, Donato, et al. "Growth of Stable Surface Oxides on Pt(111) at Near-Ambient Pressures." Angewandte Chemie International Edition 56.10 (2017): 2594-2598.

BibTeX: Download