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硅鎢酸修飾多晶鉑電極及其電催化性能
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O643

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哈爾濱工業(yè)大學?；?HIT2000．12)


Electrochemical Behavior of Silicatungstic Acid Modified Platinum Electrode and Its Performance of Electrocatalysis to Methanol Oxidation
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    摘要:

    通過循環(huán)伏安掃描制備了硅鎢酸修飾多晶鉑電極，在電極制備過程中發(fā)現(xiàn)，SiW12在Pt電極表面的氫區(qū)發(fā)生了氧化-還原反應，而在氧區(qū)使電極表面含氧粒子的吸附增加。通過循環(huán)伏安和恒電位I-t曲線研究了該修飾電極在硫酸溶液中的電化學行為和對甲醇氧化的電催化作用。研究結(jié)果表明：硅鎢酸修飾多晶鉑電極提高了甲醇氧化的催化活性和抗CO中毒性。

    Abstract:

    The SiW12 modified Pt electrode was prepared by a cyclic voltammetry scan in H2SO4 containing SiW12. During the preparation of modified electrode, we found a redox reaction of SiW12 in hydrogen area on the Pt electrode, but the adsorption increasing for the particles containing Oxygen in Oxygen area on the electrode surface. The electrochemical behaviour of this modified electrode in H2SO4 and its electrocatalytic effect to methanol oxidation were studied by cyclic voltammograms and I-t curves of constant voltage. The results show that the Pt electrode modified by Silicatungstic acid has not only the higher catalytic activity to methanol oxidation, but also the effect decreasing CO poison.

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魏杰 楊紅 楊玉光 張忠林.硅鎢酸修飾多晶鉑電極及其電催化性能[J].稀有金屬材料與工程,2005,34(6):959~961.[Wei Jie, Yang Hong, Yang Yuguang, Zhang Zhonglin. Electrochemical Behavior of Silicatungstic Acid Modified Platinum Electrode and Its Performance of Electrocatalysis to Methanol Oxidation[J]. Rare Metal Materials and Engineering,2005,34(6):959~961.]
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  • 最后修改日期:2004-01-09
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