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

Journal article
(Original article)


Publication Details

Author(s): Fantauzzi D, Krick Calderon S, Mueller JE, Grabau M, Papp C, Steinrück HP, Senftle TP, van Duin ACT, Jacob T
Journal: Angewandte Chemie International Edition
Publisher: Wiley-VCH Verlag
Publication year: 2017
Volume: 56
Journal issue: 10
Pages range: 2594-2598
ISSN: 1433-7851
eISSN: 1521-3773
Language: English


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.



FAU Authors / FAU Editors

Grabau, Mathias Dr.
Papp, Christian PD Dr.
Lehrstuhl für Physikalische Chemie II
Lehrstuhl für Physikalische Chemie II
Krick Calderon, Sandra
Steinrück, Hans-Peter Prof. Dr.
Sonderforschungsbereich 953/2 Synthetische Kohlenstoffallotrope
Lehrstuhl für Physikalische Chemie II


Additional Organisation
Exzellenz-Cluster Engineering of Advanced Materials


External institutions
Pennsylvania State University (Penn State)
Princeton University
Universität Ulm


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://dx.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: 

Last updated on 2019-13-03 at 10:53