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CO Chemisorption on Vicinal Rh(111) Surfaces Studied with a Curved Crystal

Garcia-Martinez, Fernando ; Schiller, Frederik ; Blomberg, Sara LU ; Shipilin, Mikhail LU ; Merte, Lindsay R. LU ; Gustafson, Johan LU ; Lundgren, Edvin LU and Ortega, J. Enrique (2020) In Journal of Physical Chemistry C 124(17). p.9305-9313
Abstract

Curved crystal surfaces enable the systematic and accurate comparison of physical and chemical processes for a full set of vicinal crystal planes, which are probed in the very same environment. Here, we examine the early stages of the CO chemisorption on vicinal Rh(111) surfaces using a curved Rh crystal that exposes a smoothly variable density of {100} (A-type) and {111} (B-type) steps. We readily identify and quantify step and terrace species by resolving their respective core-level lines using X-ray photoelectron spectroscopy at different locations on the curved surface. Uptake experiments show similar sticking probabilities at all surface planes, subtle asymmetries between A- and B-type steps, and significantly lower saturation... (More)

Curved crystal surfaces enable the systematic and accurate comparison of physical and chemical processes for a full set of vicinal crystal planes, which are probed in the very same environment. Here, we examine the early stages of the CO chemisorption on vicinal Rh(111) surfaces using a curved Rh crystal that exposes a smoothly variable density of {100} (A-type) and {111} (B-type) steps. We readily identify and quantify step and terrace species by resolving their respective core-level lines using X-ray photoelectron spectroscopy at different locations on the curved surface. Uptake experiments show similar sticking probabilities at all surface planes, subtle asymmetries between A- and B-type steps, and significantly lower saturation coverage at densely stepped surfaces as compared to the (111) plane. The analysis of the C 1s intensity variation across the curved sample allows us to discuss the adsorption geometry around the step edge.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Physical Chemistry C
volume
124
issue
17
pages
9 pages
publisher
The American Chemical Society (ACS)
external identifiers
  • scopus:85084812711
ISSN
1932-7447
DOI
10.1021/acs.jpcc.0c00039
language
English
LU publication?
yes
id
f2eeb3a3-52bf-4d2c-889b-35e6ddc594ab
date added to LUP
2020-06-24 11:18:51
date last changed
2020-09-16 04:46:54
@article{f2eeb3a3-52bf-4d2c-889b-35e6ddc594ab,
  abstract     = {<p>Curved crystal surfaces enable the systematic and accurate comparison of physical and chemical processes for a full set of vicinal crystal planes, which are probed in the very same environment. Here, we examine the early stages of the CO chemisorption on vicinal Rh(111) surfaces using a curved Rh crystal that exposes a smoothly variable density of {100} (A-type) and {111} (B-type) steps. We readily identify and quantify step and terrace species by resolving their respective core-level lines using X-ray photoelectron spectroscopy at different locations on the curved surface. Uptake experiments show similar sticking probabilities at all surface planes, subtle asymmetries between A- and B-type steps, and significantly lower saturation coverage at densely stepped surfaces as compared to the (111) plane. The analysis of the C 1s intensity variation across the curved sample allows us to discuss the adsorption geometry around the step edge.</p>},
  author       = {Garcia-Martinez, Fernando and Schiller, Frederik and Blomberg, Sara and Shipilin, Mikhail and Merte, Lindsay R. and Gustafson, Johan and Lundgren, Edvin and Ortega, J. Enrique},
  issn         = {1932-7447},
  language     = {eng},
  month        = {04},
  number       = {17},
  pages        = {9305--9313},
  publisher    = {The American Chemical Society (ACS)},
  series       = {Journal of Physical Chemistry C},
  title        = {CO Chemisorption on Vicinal Rh(111) Surfaces Studied with a Curved Crystal},
  url          = {http://dx.doi.org/10.1021/acs.jpcc.0c00039},
  doi          = {10.1021/acs.jpcc.0c00039},
  volume       = {124},
  year         = {2020},
}