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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
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
0013-4686
5262-5266
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
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), 5262-5266. (doi:10.1016/j.electacta.2009.03.060).

Record type: Article

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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More information

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
ORCID for Andrea E. Russell: ORCID iD orcid.org/0000-0002-8382-6443

Catalogue record

Date deposited: 22 Apr 2010 08:44
Last modified: 20 Jul 2019 01:13

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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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