Journal
SMALL
Volume 13, Issue 17, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/smll.201604000
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Funding
- National Natural Science Foundation of China [21406078]
- National Key RD Program [2016YFA0202601]
- Pearl River and S&T Nova Program of Guangzhou [201610010076]
- Fundamental Research Funds for the Central Universities
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Inhibiting CO formation can more directly address the problem of CO poisoning during methanol electro-oxidation. In this study, 1D self-supported porous PtAuP alloy nanotube arrays (ANTAs) are synthesized via a facile electro-codeposition approach and present enhanced activity and improved resistance to CO poisoning through inhibiting CO formation (non-CO pathway) during the methanol oxidation reaction in acidic medium. This well-controlled Pt-/transition metal-/nonmetal ternary nanostructure exhibits a specific electroactivity twice as great as that of PtAu alloy nanotube arrays and Pt/C. At the same time, PtAuP ANTAs show a higher ratio of forward peak current density (I-f) to backward peak current density (I-b) (2.34) than PtAu ANTAs (1.27) and Pt/C (0.78). The prominent IA, value of PtAuP ANTAs indicates that most of the intermediate species are electro-oxidized to carbon dioxide in the forward scan, which highlights the high electroactivity for methanol electro-oxidation.
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