In situ Ru K-edge EXAFS of CO adsorption on a Ru modified Pt/C fuel cell catalyst
In situ Ru K-edge EXAFS of CO adsorption on a Ru modified Pt/C fuel cell catalyst
The Ru–CO bond of CO adsorbed on a Ru modified Pt/C fuel cell catalyst has been directly probed by in situ EXAFS at the Ru K-edge, providing evidence of a CO:metal surface atom ratio greater than 1:1 and that CO is adsorbed at bridging sites associated with Ru atoms at the surface of the catalyst nanoparticles. This result illustrates the limitations of single crystal models as representations of the bonding of adsorbed species at nanoparticle surfaces.
PtRu, fuel cell catalysts, CO adsorption, surface area, exafs
5262-5266
Rose, Abigail
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Bilsborrow, Robert
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King, Colin R.
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Ravikumar, M.K.
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Qian, Yangdong
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Wiltshire, Richard J.K.
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Crabb, Eleanor M.
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Russell, Andrea E.
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1 September 2009
Rose, Abigail
7e1f0e36-2ad5-4e29-b9b9-756484f1f8c6
Bilsborrow, Robert
ba9dd3e0-900e-4e8f-b3c8-9e404958b619
King, Colin R.
8b1a4ebd-8e96-4ef8-8bcc-5bb25b01e634
Ravikumar, M.K.
0b9aaa21-85a8-4ad4-9401-632f91db685d
Qian, Yangdong
ce6d3fa1-7a76-4bf7-ad83-ce4213a706a6
Wiltshire, Richard J.K.
6bec58a5-d664-412f-b7e7-52a6053f75ad
Crabb, Eleanor M.
f3741a11-755e-4020-bf1d-dda1be475a87
Russell, Andrea E.
b6b7c748-efc1-4d5d-8a7a-8e4b69396169
Rose, Abigail, Bilsborrow, Robert, King, Colin R., Ravikumar, M.K., Qian, Yangdong, Wiltshire, Richard J.K., Crabb, Eleanor M. and Russell, Andrea E.
(2009)
In situ Ru K-edge EXAFS of CO adsorption on a Ru modified Pt/C fuel cell catalyst.
Electrochimica Acta, 54 (22), .
(doi:10.1016/j.electacta.2009.03.060).
Abstract
The Ru–CO bond of CO adsorbed on a Ru modified Pt/C fuel cell catalyst has been directly probed by in situ EXAFS at the Ru K-edge, providing evidence of a CO:metal surface atom ratio greater than 1:1 and that CO is adsorbed at bridging sites associated with Ru atoms at the surface of the catalyst nanoparticles. This result illustrates the limitations of single crystal models as representations of the bonding of adsorbed species at nanoparticle surfaces.
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Published date: 1 September 2009
Keywords:
PtRu, fuel cell catalysts, CO adsorption, surface area, exafs
Identifiers
Local EPrints ID: 146373
URI: http://eprints.soton.ac.uk/id/eprint/146373
ISSN: 0013-4686
PURE UUID: 334dc254-d8f2-40e6-be91-2ccd2433212a
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Date deposited: 22 Apr 2010 08:44
Last modified: 14 Mar 2024 02:41
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Contributors
Author:
Abigail Rose
Author:
Robert Bilsborrow
Author:
Colin R. King
Author:
M.K. Ravikumar
Author:
Yangdong Qian
Author:
Richard J.K. Wiltshire
Author:
Eleanor M. Crabb
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