CO Adsorption on Pd–Au Alloy Surface: Reversible Adsorption Site Switching Induced by High-Pressure CO
Ryo TOYOSHIMA
1
,
Nana Hiramatsu
1
,
Masaaki Yoshida
1
,
Kenta Amemiya
2
,
Kazuhiko Mase
2
,
Bongjin Simon Mun
3
,
Hiroshi Kondoh
1
2
Publication type: Journal Article
Publication date: 2015-12-24
scimago Q1
wos Q3
SJR: 0.914
CiteScore: 6.2
Impact factor: 3.2
ISSN: 19327447, 19327455
Surfaces, Coatings and Films
Electronic, Optical and Magnetic Materials
Physical and Theoretical Chemistry
General Energy
Abstract
The interaction between carbon monoxide (CO) and a Pd70Au30(111) alloy surface was investigated under CO pressures with a wide range from ultrahigh vacuum (UHV) to sub-Torr at room temperature by a combination of near-ambient pressure (NAP) X-ray photoelectron spectroscopy and density functional theory calculations. The adsorption site and surface coverage of CO are reversibly controlled by the CO pressure. Under UHV conditions, the CO molecules occupy bridge and hollow sites on contiguous Pd clusters in the Au-rich surface layer. Exposure to sub-Torr CO gas induces site switching of the adsorbed CO on the contiguous Pd clusters from multiple-coordination (hollow and bridge) sites to single-coordination (top) sites, even though the latter sites are energetically less favorable. This behavior is explained by a pressure-induced entropic effect on gas-phase CO, which is in equilibrium with the adsorbed CO. This site switching highlights an important aspect of high-pressure-induced adsorption behavior.
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Total citations:
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Citations from 2024:
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(16.67%)
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TOYOSHIMA R. et al. CO Adsorption on Pd–Au Alloy Surface: Reversible Adsorption Site Switching Induced by High-Pressure CO // Journal of Physical Chemistry C. 2015. Vol. 120. No. 1. pp. 416-421.
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TOYOSHIMA R., Hiramatsu N., Yoshida M., Amemiya K., Mase K., Mun B. S., Kondoh H. CO Adsorption on Pd–Au Alloy Surface: Reversible Adsorption Site Switching Induced by High-Pressure CO // Journal of Physical Chemistry C. 2015. Vol. 120. No. 1. pp. 416-421.
Cite this
RIS
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TY - JOUR
DO - 10.1021/acs.jpcc.5b10661
UR - https://doi.org/10.1021/acs.jpcc.5b10661
TI - CO Adsorption on Pd–Au Alloy Surface: Reversible Adsorption Site Switching Induced by High-Pressure CO
T2 - Journal of Physical Chemistry C
AU - TOYOSHIMA, Ryo
AU - Hiramatsu, Nana
AU - Yoshida, Masaaki
AU - Amemiya, Kenta
AU - Mase, Kazuhiko
AU - Mun, Bongjin Simon
AU - Kondoh, Hiroshi
PY - 2015
DA - 2015/12/24
PB - American Chemical Society (ACS)
SP - 416-421
IS - 1
VL - 120
SN - 1932-7447
SN - 1932-7455
ER -
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BibTex (up to 50 authors)
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@article{2015_TOYOSHIMA,
author = {Ryo TOYOSHIMA and Nana Hiramatsu and Masaaki Yoshida and Kenta Amemiya and Kazuhiko Mase and Bongjin Simon Mun and Hiroshi Kondoh},
title = {CO Adsorption on Pd–Au Alloy Surface: Reversible Adsorption Site Switching Induced by High-Pressure CO},
journal = {Journal of Physical Chemistry C},
year = {2015},
volume = {120},
publisher = {American Chemical Society (ACS)},
month = {dec},
url = {https://doi.org/10.1021/acs.jpcc.5b10661},
number = {1},
pages = {416--421},
doi = {10.1021/acs.jpcc.5b10661}
}
Cite this
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Copy
TOYOSHIMA, Ryo, et al. “CO Adsorption on Pd–Au Alloy Surface: Reversible Adsorption Site Switching Induced by High-Pressure CO.” Journal of Physical Chemistry C, vol. 120, no. 1, Dec. 2015, pp. 416-421. https://doi.org/10.1021/acs.jpcc.5b10661.