One-dimensional PtO2 at Pt steps: Formation and reaction with CO
(2005) In Physical Review Letters 95(25).- Abstract
- Using core-level spectroscopy and density functional theory we show that a one-dimensional (1D) PtO2 oxide structure forms at the steps of the Pt(332) surface after O-2 exposure. The 1D oxide is found to be stable in an oxygen pressure range, where bulk oxides are only metastable, and is therefore argued to be a precursor to the Pt oxidation. As an example of the consequences of such a precursor exclusively present at the steps, we investigate the reaction of CO with oxygen covered Pt(332). Albeit more strongly bound, the oxidic oxygen is found to react more easily with CO than oxygen chemisorbed on the Pt terraces.
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/210441
- author
- organization
- publishing date
- 2005
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review Letters
- volume
- 95
- issue
- 25
- article number
- 146102
- publisher
- American Physical Society
- external identifiers
-
- wos:000234118500042
- scopus:29144441204
- ISSN
- 1079-7114
- DOI
- 10.1103/PhysRevLett.95.256102
- language
- English
- LU publication?
- yes
- id
- 599cd370-2a40-4db5-b2d2-3d8aec9ea9a4 (old id 210441)
- date added to LUP
- 2016-04-01 12:25:16
- date last changed
- 2022-03-05 23:22:06
@article{599cd370-2a40-4db5-b2d2-3d8aec9ea9a4, abstract = {{Using core-level spectroscopy and density functional theory we show that a one-dimensional (1D) PtO2 oxide structure forms at the steps of the Pt(332) surface after O-2 exposure. The 1D oxide is found to be stable in an oxygen pressure range, where bulk oxides are only metastable, and is therefore argued to be a precursor to the Pt oxidation. As an example of the consequences of such a precursor exclusively present at the steps, we investigate the reaction of CO with oxygen covered Pt(332). Albeit more strongly bound, the oxidic oxygen is found to react more easily with CO than oxygen chemisorbed on the Pt terraces.}}, author = {{Wang, JG and Li, WX and Borg, Mikael and Gustafson, Johan and Mikkelsen, Anders and Pedersen, TM and Lundgren, Edvin and Weissenrieder, Jonas and Klikovits, J and Schmid, M and Hammer, B and Andersen, Jesper N}}, issn = {{1079-7114}}, language = {{eng}}, number = {{25}}, publisher = {{American Physical Society}}, series = {{Physical Review Letters}}, title = {{One-dimensional PtO2 at Pt steps: Formation and reaction with CO}}, url = {{http://dx.doi.org/10.1103/PhysRevLett.95.256102}}, doi = {{10.1103/PhysRevLett.95.256102}}, volume = {{95}}, year = {{2005}}, }