Journal
ELECTROCHEMISTRY COMMUNICATIONS
Volume 11, Issue 8, Pages 1717-1720Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2009.07.004
Keywords
Pt-Au electrocatalyst; Nanoporous gold scaffold; Methanol electro-oxidation
Categories
Funding
- NSFC [20890021, 20821063]
- 973 Program [2007CB936404]
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An ultrathin platinum film is fabricated on a nanoporous gold (NPG) scaffold through a catalytic chemical deposition method. The morphology and active surface area of the deposited Pt film, which will greatly influence the electro-catalytic properties of the catalyst, can be controlled by adjusting the deposition condition. Compared with bare NPG and high Pt loaded NPG, the performances of methanol electro-oxidation on the low-Pt-content bimetallic film are greatly improved, both in its catalytic current enhancement and signal stability. The best condition for methanol oxidation can be achieved when the area ratio of deposited Pt and uncovered Au was 3:1. (C) 2009 Elsevier B.V. All rights reserved.
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