高利用率多壁碳纳米管负载金铂合金纳米粒子催化剂在碱性溶液中的甲醇电催化氧化性能研究

doi:10.61558/2993-074X.1951

电化学（中英文） ›› 2009, Vol. 15 ›› Issue (1): 38-42. doi: 10.61558/2993-074X.1951

高利用率多壁碳纳米管负载金铂合金纳米粒子催化剂在碱性溶液中的甲醇电催化氧化性能研究

郭勋;郭道军;邱新平;陈立泉;朱文涛;

清华大学有机光电子与分子工程教育部重点实验室化学系;曲阜师范大学化学与化工学院;

收稿日期:2009-02-28 修回日期:2009-02-28 出版日期:2009-02-28 发布日期:2009-02-28

High Utilization AuPt Nanoparticles Supported on MWCNTS for Methanol Electro-oxidation in Alkaline Medium

GUO Xun1,GUO Dao-jun1,2,QIU Xin-ping1,CHEN Li-quan1,ZHU Wen-tao1

(1.Key Laboratory of Organic Optoelectronics and Molecular Engineering,Department of Chemistry,Tsinghua University,Beijing 100084,China;2.School of Chemistry and Chemical Engineering,Qufu Normal University,Qufu 273165,Shandong,China

Received:2009-02-28 Revised:2009-02-28 Published:2009-02-28 Online:2009-02-28

摘要/Abstract

摘要： 使用乙二醇还原法合成了一系列高利用率多壁碳纳米管负载的金铂双金属纳米粒子电催化剂,在碱性溶液中由循环伏安和计时电流法测试该AuPt催化剂对于甲醇氧化反应的电催化活性.透射电子显微镜、X射线衍射与X射线能谱观测催化剂形貌,表征催化剂结构.结果表明,金铂双金属纳米粒子均匀分散在碳纳米管上,催化剂具有良好甲醇电氧化性能.实验表明Au/Pt/MWCNTs比为10∶8∶32(bymass)时,该催化剂具有最高甲醇电氧化峰电流密度与最负起始氧化电位.

关键词: 甲醇电氧化, 乙二醇还原, 金铂纳米粒子, 多壁碳纳米管, 直接甲醇燃料电池

Abstract: We synthesized gold-platinum electrocatalysts supported on multi-walled carbon nanotubes(MWCNTs) with high utilization by a simple one-step method.A high Pt loading series of bimetallic AuPt/MWCNTs catalysts were prepared by the improved ethylene glycol reduction method,and then were compared in terms of the electrocatalytic activity for methanol electro-oxidation using cyclic voltammetry(CV) and chronoamperometry in alkaline solutions.The structure of AuPt/MWCNTs was characterized by the transmission electron microscopy(TEM),X-ray diffraction(XRD) and energy-dispersive X-ray spectroscopy(EDS).The results showed that the AuPt/MWCNTs catalysts had high Pt utilization,uniform AuPt nanoparticles size and good electrocatalytic activity for methanol electro-oxidation.The effect of Au/Pt mass ratio on electrocatalytic activity was also investigated.The highest peak current and lowest onset potential for methanol electro-oxidation appeared at the Au/Pt/MWCNTS mass ratio of 10∶8∶32.

Key words: methanol electro-oxidation, ethylene glycol reduction, AuPt nanoparticles, multi-walled carbon nanotubes, direct methanol fuel cell

中图分类号:

TM911.4

郭勋, 郭道军, 邱新平, 陈立泉, 朱文涛, . 高利用率多壁碳纳米管负载金铂合金纳米粒子催化剂在碱性溶液中的甲醇电催化氧化性能研究[J]. 电化学（中英文）, 2009, 15(1): 38-42.

GUO Xun, GUO Dao-jun, QIU Xin-ping, CHEN Li-quan, ZHU Wen-tao. High Utilization AuPt Nanoparticles Supported on MWCNTS for Methanol Electro-oxidation in Alkaline Medium[J]. Journal of Electrochemistry, 2009, 15(1): 38-42.

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https://electrochem.xmu.edu.cn/CN/Y2009/V15/I1/38

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高利用率多壁碳纳米管负载金铂合金纳米粒子催化剂在碱性溶液中的甲醇电催化氧化性能研究

High Utilization AuPt Nanoparticles Supported on MWCNTS for Methanol Electro-oxidation in Alkaline Medium

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