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Citation: YANG Hong-Yan, GUO Pan-Pan, LI Wei-Shan. Electrodeposition Preparation and Activity of CO-Resistant Catalyst Pt-H_xWO₃ for Methanol Oxidation[J]. Acta Physico-Chimica Sinica, ;2009, 25(04): 719-723. doi: 10.3866/PKU.WHXB20090425 shu

Electrodeposition Preparation and Activity of CO-Resistant Catalyst Pt-H_xWO₃ for Methanol Oxidation

1.
School of Chemistry and Environment, South China Normal University, Guangzhou 510006, P. R. China; Key Laboratory of Electrochemical Technology on Energy Storage and Power Generation in Guangdong Universities, Guangzhou 510006, P. R. China

Corresponding author: GUO Pan-Pan, LI Wei-Shan, liwsh@scnu.edu.cn
Received Date: 20 October 2008
Available Online: 25 February 2009

Platinum-hydrogen tungsten bronze (Pt-HxWO3) was prepared on a glassy carbon electrode by cyclic
voltammetry and its composition, morphology, structure, and activity towards methanol oxidation were characterized by scanning electron microscope (SEM), Raman spectrum, and cyclic voltammetry. Results show that Pt-HxWO3 has better activity toward methanol oxidation than pure platinum(Pt) prepared under the same conditions. When the atomic ratio of Pt toWin the solution for the Pt-HxWO3 preparation is 1:8, the atomic ratio of Pt toWin the prepared Pt-HxWO3 is 4:1. This catalyst has the best activity for methanol oxidation. The peak current for methanol oxidation on this catalyst is 1.7 times that on Pt. The better catalytic activity of Pt-HxWO3 results from its better resistance to toxic CO than Pt because the CO oxidation on Pt-HxWO3 is 50 mV more negative than the case on Pt.
- Electrodeposition,
- Platinum,
- Hydrogen tungsten bronze,
- Methanol oxidation,
- CO
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1.
沈阳化工大学材料科学与工程学院沈阳 110142

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Electrodeposition Preparation and Activity of CO-Resistant Catalyst Pt-HxWO3 for Methanol Oxidation

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通讯作者: 陈斌, bchen63@163.com

Electrodeposition Preparation and Activity of CO-Resistant Catalyst Pt-H_xWO₃ for Methanol Oxidation