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CO adsorption on Au(310) and Au(321): 6-Fold coordinated gold atoms

Weststrate, C. J.; Lundgren, Edvin LU ; Andersen, Jesper N LU ; Rienks, E. D. L.; Gluhoi, A. C.; Bakker, J. W.; Groot, I. M. N. and Nieuwenhuys, B. E. (2009) In Surface Science 603(13). p.2152-2157
Abstract
The adsorption of CO on Au(310) and Au(321) was studied using a combination of thermal desorption spectroscopy and high resolution core level photoemission spectroscopy. These vicinal Au surfaces both have 6-fold coordinated atoms at the step edges but have a different terrace structure. The CO adsorption behavior was found to be very similar for both surfaces. Three different desorption peaks due to chemisorbed CO were identified, which desorb around 100 K(alpha), 120 K(beta) and 180 K(gamma), respectively. The C1s and O1s spectra of the chemisorbed CO show a complex shake-up structure. Our experimental results indicate that CO only adsorbs on the step atoms. The different desorption peaks are explained by substrate-mediated long-range... (More)
The adsorption of CO on Au(310) and Au(321) was studied using a combination of thermal desorption spectroscopy and high resolution core level photoemission spectroscopy. These vicinal Au surfaces both have 6-fold coordinated atoms at the step edges but have a different terrace structure. The CO adsorption behavior was found to be very similar for both surfaces. Three different desorption peaks due to chemisorbed CO were identified, which desorb around 100 K(alpha), 120 K(beta) and 180 K(gamma), respectively. The C1s and O1s spectra of the chemisorbed CO show a complex shake-up structure. Our experimental results indicate that CO only adsorbs on the step atoms. The different desorption peaks are explained by substrate-mediated long-range interactions between the adsorbates. Comparison with literature results shows that the CO adsorption energy is not only dependent on the coordination number of the Au atoms, but that the exact geometrical structure of the surface also plays a role. (C) 2009 Elsevier B.V. All rights reserved. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Au, Gold, Vicinal gold surface, CO adsorption, XPS
in
Surface Science
volume
603
issue
13
pages
2152 - 2157
publisher
Elsevier
external identifiers
  • wos:000267083500026
  • scopus:65549136185
ISSN
0039-6028
DOI
10.1016/j.susc.2009.04.026
language
English
LU publication?
yes
id
5182fe4a-9d94-43b7-8964-824db2ea7703 (old id 1441556)
date added to LUP
2009-07-27 15:55:49
date last changed
2017-11-12 03:45:29
@article{5182fe4a-9d94-43b7-8964-824db2ea7703,
  abstract     = {The adsorption of CO on Au(310) and Au(321) was studied using a combination of thermal desorption spectroscopy and high resolution core level photoemission spectroscopy. These vicinal Au surfaces both have 6-fold coordinated atoms at the step edges but have a different terrace structure. The CO adsorption behavior was found to be very similar for both surfaces. Three different desorption peaks due to chemisorbed CO were identified, which desorb around 100 K(alpha), 120 K(beta) and 180 K(gamma), respectively. The C1s and O1s spectra of the chemisorbed CO show a complex shake-up structure. Our experimental results indicate that CO only adsorbs on the step atoms. The different desorption peaks are explained by substrate-mediated long-range interactions between the adsorbates. Comparison with literature results shows that the CO adsorption energy is not only dependent on the coordination number of the Au atoms, but that the exact geometrical structure of the surface also plays a role. (C) 2009 Elsevier B.V. All rights reserved.},
  author       = {Weststrate, C. J. and Lundgren, Edvin and Andersen, Jesper N and Rienks, E. D. L. and Gluhoi, A. C. and Bakker, J. W. and Groot, I. M. N. and Nieuwenhuys, B. E.},
  issn         = {0039-6028},
  keyword      = {Au,Gold,Vicinal gold surface,CO adsorption,XPS},
  language     = {eng},
  number       = {13},
  pages        = {2152--2157},
  publisher    = {Elsevier},
  series       = {Surface Science},
  title        = {CO adsorption on Au(310) and Au(321): 6-Fold coordinated gold atoms},
  url          = {http://dx.doi.org/10.1016/j.susc.2009.04.026},
  volume       = {603},
  year         = {2009},
}