Electrodeposition of platinum microparticle interface on conducting polymer film modified nichrome for electrocatalytic oxidation of methanol

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• 作者：Zhenhui Wang ; Guiqin Gao ; Hefeng Zhu ; Zhidan Sun ; Haiping Liu ; Xiaoling Zhao
• 关键词：Platinum microparticles ; Nichrome matrix ; Polyaniline ; Methanol oxidation ; Electrocatalysis
• 刊名：International Journal of Hydrogen Energy
• 出版年：2009
• 出版时间：December 2009
• 年：2009
• 卷：34
• 期：23
• 页码：9334-9340
• 全文大小：834 K

文摘

A simple and “green” approach for fabrication of platinum microparticle interface on conducting polymer film modified nichrome matrix (Pt/PAn/Nc) for methanol oxidation was investigated. The Pt microparticles were grown directly on the polyaniline precursor film modified nichrome matrix (PAn/Nc) in dilute chloroplatinic acid solution by cyclic voltammetry. The SEM revealed that the deposits were composed of spherical Pt microparticles. Cyclic voltammetry and chronoamperometry were used for characterization of the electrode properties. Results showed that the spherical Pt/PAn/Nc electrode enhanced the catalytic activity and promoted methanol electrooxidation. The catalytic activity of Pt/PAn/Nc electrode was 15 times higher than that obtained from pure platinum under the same conditions. Moreover, the deposited Pt microparticles improved the electrochemical properties of nichrome and reduced the dosage of noble metal platinum, remarkably. The cost could be reduced dramatically by decreasing the contents of platinum. The Pt/PAn/Nc are likely a promising electrocatalyst for methanol electrooxidation.