| Electrodeposition preparation of Nafion-Pt-HxMoO3 and its activity toward methanol oxidation |
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| 作者姓名： | 李伟 黄青丹 张庆龙 黄幼菊 赵灵智 李伟善 |
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| 作者单位： | Department of Chemistry, South China Normal University, Guangzhou 510006, China |
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| 基金项目： | Project（20573039） supported by the National Natural Science Foundation of China; project（2005DFA60580） supportcd by CISTC; project （2005B50101003） supported by Key Project of Guangdong Province |
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| 摘 要： | A composite catalyst Nafion-Pt-HxMoO3 was prepared on a glassy carbon by cyclic voltammetry methods in sulfuric acid solution containing Na2MoO4, H2PtCl6 and Naton, and its activity for the methanol oxidation was studied with Pt-HxMoO3 as comparison. It is found that the electrocatalytic activity and the stability of Pt-HxMoO3 are improved by the Nation. The activity of Pt-HxMoO3 reaches its maximum when the content of Nation in the preparation solution is 0.012%（mass fraction）. In this case the oxidation peak current of methanol on Nation-Pt-HxMoO3 is 1.76 times larger than that on Pt-HxMoO3 and keeps unchanged when the potential is set at 0.3 V （vs Hg-Hg2SO4） for 5 000 s in 1 mol/LCH3OH＋0.5 mol/L U2SO4 solution. The results from energy dispersive spectroscopy show that the content of Nation in the composite is 0.57%. The results from scanning electron spectroscopy show that the composite of Nafion-Pt-HxMoO has a gain size of about 90 nm and distributes more uniformly than Pt-HxMoO3.
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| 关 键 词： | 复合催化剂 制备方法 电沉积法 铂 氢 钼 铜 甲醇氧化 |
| 收稿时间： | 2007-07-15 |
| 修稿时间： | 2007-09-10 |
Electrodeposition preparation of Nafion-Pt-HxMoO3 and its activity toward methanol oxidation |
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| LI Wei, HUANG Qing-dan, ZHANG Qing-long, HUANG You-ju, ZHA Ling-zhi, LI Wei-shan.Electrodeposition preparation of Nafion-Pt-HxMoO3 and its activity toward methanol oxidation[J].Transactions of Nonferrous Metals Society of China,2007,17(A02):1122-1125. |
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| Authors: | LI Wei HUANG Qing-dan ZHANG Qing-long HUANG You-ju ZHA Ling-zhi LI Wei-shan |
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| Affiliation: | LI Wei, HUANG Qing-dan, ZHANG Qing-long, HUANG You-ju, ZHA0 Ling-zhi, LI Wei-shan |
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| Abstract: | |
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| Keywords: | platinum-hydrogen molybdenum bronze Nafion electrodeposition preparation methanol oxidation |
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