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On the adsorption sites for CO on the Rh(111) single crystal surface

Beutler, A. LU ; Lundgren, E. LU ; Nyholm, R. LU ; Andersen, J. N. LU ; Setlik, B. and Heskett, D. (1997) In Surface Science 371(2-3). p.381-389
Abstract

High resolution photoemission applied to the C 1s and Rh 3d core levels has been used to investigate the adsorption sites at low temperature of CO on the Rh(111) single crystal surface as a function of CO coverage. Two different sites are found to be occupied by the CO molecules. At coverages up to 0.5 monolayers the majority of the molecules are found to adsorb in on-top sites whereas at higher coverages three-fold hollow sites become increasingly populated. The different C 1s binding energy of the CO molecules in these two sites makes it possible to measure diffraction induced intensity variations versus photon energy in a site specific manner. The saturation (2 x 2)-3CO structure formed at a coverage of 0.75 monolayers is argued to... (More)

High resolution photoemission applied to the C 1s and Rh 3d core levels has been used to investigate the adsorption sites at low temperature of CO on the Rh(111) single crystal surface as a function of CO coverage. Two different sites are found to be occupied by the CO molecules. At coverages up to 0.5 monolayers the majority of the molecules are found to adsorb in on-top sites whereas at higher coverages three-fold hollow sites become increasingly populated. The different C 1s binding energy of the CO molecules in these two sites makes it possible to measure diffraction induced intensity variations versus photon energy in a site specific manner. The saturation (2 x 2)-3CO structure formed at a coverage of 0.75 monolayers is argued to contain one on-top and two three-fold hollow molecules per unit cell.

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author
organization
publishing date
type
Contribution to journal
publication status
published
keywords
Carbon monoxide, Chemisorption, Photoelectron diffraction, Rhodium, Single crystal surfaces, Soft X-ray photoelectron spectroscopy, Surface structure, morphology, roughness and topography
in
Surface Science
volume
371
issue
2-3
pages
9 pages
publisher
Elsevier
external identifiers
  • Scopus:0031078070
ISSN
0039-6028
language
English
LU publication?
yes
id
40ab9a6d-25bb-4541-ac43-430acac145e6
date added to LUP
2016-04-29 10:52:49
date last changed
2016-10-13 05:07:19
@misc{40ab9a6d-25bb-4541-ac43-430acac145e6,
  abstract     = {<p>High resolution photoemission applied to the C 1s and Rh 3d core levels has been used to investigate the adsorption sites at low temperature of CO on the Rh(111) single crystal surface as a function of CO coverage. Two different sites are found to be occupied by the CO molecules. At coverages up to 0.5 monolayers the majority of the molecules are found to adsorb in on-top sites whereas at higher coverages three-fold hollow sites become increasingly populated. The different C 1s binding energy of the CO molecules in these two sites makes it possible to measure diffraction induced intensity variations versus photon energy in a site specific manner. The saturation (2 x 2)-3CO structure formed at a coverage of 0.75 monolayers is argued to contain one on-top and two three-fold hollow molecules per unit cell.</p>},
  author       = {Beutler, A. and Lundgren, E. and Nyholm, R. and Andersen, J. N. and Setlik, B. and Heskett, D.},
  issn         = {0039-6028},
  keyword      = {Carbon monoxide,Chemisorption,Photoelectron diffraction,Rhodium,Single crystal surfaces,Soft X-ray photoelectron spectroscopy,Surface structure, morphology, roughness and topography},
  language     = {eng},
  month        = {02},
  number       = {2-3},
  pages        = {381--389},
  publisher    = {ARRAY(0x9bd0338)},
  series       = {Surface Science},
  title        = {On the adsorption sites for CO on the Rh(111) single crystal surface},
  volume       = {371},
  year         = {1997},
}