4.6 Article

Controlled deposition of Pt on Au nanorods and their catalytic activity towards formic acid oxidation

Journal

ELECTROCHEMISTRY COMMUNICATIONS
Volume 10, Issue 7, Pages 961-964

Publisher

ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2008.04.018

Keywords

gold nanorods; platinum; formic acid electrooxidation; fuel cells

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Platinum submonolayer decorated gold nanorods with controlled coverage were prepared by the addition of Au nanorods into the growth solution of Pt in the presence of NH20H - HCI as the growth agent. The properties of Au nanorods decorated by Pt submonolayer were investigated by various techniques including transimission electron microscopy, X-ray diffraction, and electrochemical methods. The Pt decorated Au nanorods on carbon black showed significantly higher activity on formic acid electrooxidation than the conventional Pt/C catalysts. They showed different reaction path of formic acid electrooxidation by suppressing the formation of poisoning intermediate CO. (c) 2008 Elsevier B.V. All rights reserved.

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