Controlled deposition of Pt on Au nanorods and their catalytic activity towards formic acid oxidation |
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| Affiliation: | 1. School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore 637 457, Singapore;2. School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Drive, Singapore, 639798, Singapore |
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| Abstract: | 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 NH2OH · HCl 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. |
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