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The surface oxide as a source of oxygen on Rh(111)

Lundgren, Edvin LU ; Gustafson, Johan LU ; Resta, Andrea LU ; Weissenrieder, Jonas LU ; Mikkelsen, Anders LU ; Andersen, Jesper N LU ; Kohler, L; Kresse, G; Klikovits, J and Biederman, A, et al. (2005) In Journal of Electron Spectroscopy and Related Phenomena 144-147. p.367-372
Abstract
The reduction of a thin surface oxide on the Rh(1 1 1) surface by CO is studied in situ by photoemission spectroscopy, scanning tunneling microscopy, and density functional theory. CO molecules are found not to adsorb on the surface oxide at a sample temperature of 100 K, in contrast to on the clean and chemisorbed oxygen covered surface. Despite this behavior, the surface oxide may still be reduced by CO, albeit in a significantly different fashion as compared to the reduction of a phase containing only chemisorbed on surface oxygen. The experimental observations combined with theoretical considerations concerning the stability of the surface oxide, result in a model of the reduction process at these pressures suggesting that the surface... (More)
The reduction of a thin surface oxide on the Rh(1 1 1) surface by CO is studied in situ by photoemission spectroscopy, scanning tunneling microscopy, and density functional theory. CO molecules are found not to adsorb on the surface oxide at a sample temperature of 100 K, in contrast to on the clean and chemisorbed oxygen covered surface. Despite this behavior, the surface oxide may still be reduced by CO, albeit in a significantly different fashion as compared to the reduction of a phase containing only chemisorbed on surface oxygen. The experimental observations combined with theoretical considerations concerning the stability of the surface oxide, result in a model of the reduction process at these pressures suggesting that the surface oxide behaves as a source of oxygen for the CO-oxidation reaction. (Less)
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publication status
published
subject
keywords
O, Rh, STM, PES, DFR, CO
in
Journal of Electron Spectroscopy and Related Phenomena
volume
144-147
pages
367 - 372
publisher
Elsevier
external identifiers
  • wos:000229657100088
  • scopus:20244376330
ISSN
0368-2048
DOI
10.1016/j.elspec.2005.01.004
language
English
LU publication?
yes
id
f3071a62-dd5b-402c-bf96-c7b6bb4705d2 (old id 237408)
date added to LUP
2007-09-28 16:41:49
date last changed
2017-11-12 03:51:42
@article{f3071a62-dd5b-402c-bf96-c7b6bb4705d2,
  abstract     = {The reduction of a thin surface oxide on the Rh(1 1 1) surface by CO is studied in situ by photoemission spectroscopy, scanning tunneling microscopy, and density functional theory. CO molecules are found not to adsorb on the surface oxide at a sample temperature of 100 K, in contrast to on the clean and chemisorbed oxygen covered surface. Despite this behavior, the surface oxide may still be reduced by CO, albeit in a significantly different fashion as compared to the reduction of a phase containing only chemisorbed on surface oxygen. The experimental observations combined with theoretical considerations concerning the stability of the surface oxide, result in a model of the reduction process at these pressures suggesting that the surface oxide behaves as a source of oxygen for the CO-oxidation reaction.},
  author       = {Lundgren, Edvin and Gustafson, Johan and Resta, Andrea and Weissenrieder, Jonas and Mikkelsen, Anders and Andersen, Jesper N and Kohler, L and Kresse, G and Klikovits, J and Biederman, A and Schmid, M and Varga, P},
  issn         = {0368-2048},
  keyword      = {O,Rh,STM,PES,DFR,CO},
  language     = {eng},
  pages        = {367--372},
  publisher    = {Elsevier},
  series       = {Journal of Electron Spectroscopy and Related Phenomena},
  title        = {The surface oxide as a source of oxygen on Rh(111)},
  url          = {http://dx.doi.org/10.1016/j.elspec.2005.01.004},
  volume       = {144-147},
  year         = {2005},
}