物理化学学报 >> 2007, Vol. 23 >> Issue (08): 1224-1228.doi: 10.3866/PKU.WHXB20070816

研究论文 上一篇    下一篇

多壁碳纳米管负载Pd-Ni电催化剂对乙二醇的电催化氧化

杨苏东 张校刚; 黄建书; 孙景玉   

  1. 新疆大学应用化学研究所, 乌鲁木齐 830046; 南京航空航天大学材料科学与技术学院, 南京 210016
  • 收稿日期:2007-02-12 修回日期:2007-04-02 发布日期:2007-08-03
  • 通讯作者: 张校刚 E-mail:azhangxg@163.com

Pd-Ni/MWCNT Electrocatalysts for Ethylene Glycol Electro-oxidation in Alkaline Medium

YANG Su-Dong; ZHANG Xiao-Gang; HUANG Jian-Shu; SUN Jing-Yu   

  1. Institute of Applied Chemistry, Xinjiang University, Urumqi 830046, P. R. China; College of Material Science & Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, P. R. China
  • Received:2007-02-12 Revised:2007-04-02 Published:2007-08-03
  • Contact: ZHANG Xiao-Gang E-mail:azhangxg@163.com

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摘要： 采用微波加热还原法制备了不同化学计量比的Pd-Ni复合多壁碳纳米管(Pd-Ni/MWCNT)催化剂. 通过X射线衍射(XRD)、透射电镜(TEM)和能量散射谱(EDS)等微结构和组成表征表明, 所合成的催化剂中Pd-Ni合金具有较小的纳米颗粒以及较好的分散程度. 循环伏安(CV)、线性扫描(LSV)、计时电流方法(CA)和交流阻抗(EIS)等测试表明, Pd-Ni(3:1)/MWCNT催化剂对乙二醇的电化学氧化具有较高的催化活性.

关键词: 乙二醇, 微波还原法, 乙二醇氧化, Pd-Ni/MWCNTs

Abstract: The MWCNT (multi-walled carbon nanotube) electrocatalysts with different Pd/Ni atomic ratios were prepared by microwave reduction method. XRD, TEM, and EDS measurements were used to characterize the composition, particle size, and crystallinity of the catalysts. It showed that the Pd-Ni nanoparticles supported on MWCNTs were small and well dispersed on the surface of MWCNTs. The electrocatalytic oxidation of ethylene glycol (EG) was studied by cyclic voltammetry (CV), linear sweep voltammetry (LSV), chronoamperometry (CA) and electrochemical impendance spectroscopy (EIS). It was found that the performance of ethylene glycol electro-oxidation on Pd-Ni/MWCNT electrocatalysts with a Pd/Ni atomic ratio of 3:1 was the best.

Key words: Ethylene glycol, Microwave reduction method, Ethylene glycol oxidation, Pd-Ni/MWCNTs