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In situ Ru K-edge EXAFS of CO adsorption on a Ru modified Pt/C fuel cell catalyst

Abigail Rose,Robert Bilsborrow,Colin R. King,M.K. Ravikumar,Yangdong Qian,Richard J.K. Wiltshire,Eleanor M. Crabb,Andrea E. Russell

Electrochimica Acta（2009）

Cited 10|Views7
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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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PtRu,Fuel cell catalysts,CO adsorption,Surface area,EXAFS
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