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电化学(中英文) ›› 2011, Vol. 17 ›› Issue (2): 175-179.  doi: 10.61558/2993-074X.2831

• 研究论文 • 上一篇    下一篇

不同载体负载Pd催化剂对甲酸的电催化氧化活性比较

杨苏东1,梁彦瑜1,温祝亮2,宋启军2,张校刚1,*   

  • 收稿日期:2010-10-08 修回日期:2010-12-15 出版日期:2011-05-28 发布日期:2011-05-05
  • 通讯作者: 张校刚, Tel: +8625-52112902 E-mail:azhangxg@163.com
  • 基金资助:

    国家自然科学基金(50701023)以及江苏省博士创新基金(CX09B_075Z)

Comparison of Catalytic Performance on Different Materials Supported Pd Catalysts for Formic Acid Oxidation

YANG Su-dong 1, LIANG Yan-yu 1, WEN Zhu-liang 2, SONG Qi-jun 2, ZHANG Xiao-gang 1*   

  1. 1. College of Material Science and Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, P.R.China
    2. School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, P.R.China
  • Received:2010-10-08 Revised:2010-12-15 Published:2011-05-28 Online:2011-05-05
  • Contact: ZHANG Xiao-gang, Tel: +8625-52112902 E-mail:azhangxg@163.com

摘要: 应用Hummers法氧化合成氧化石墨(GO), 然后用化学一步还原法制得石墨烯(graphene)负载Pd催化剂. 用同样方法以多壁碳纳米管(MWCNTs)、单壁碳纳米管(SWCNTs)和Vulcan XC-72为载体制备了不同负载型的Pd催化剂. X射线衍射(XRD)、透射电镜(TEM)表征表明,在石墨烯载体上Pd纳米粒子粒径较小,且分布均匀. 电化学活性面积(ECSA)、循环伏安(CV)、计时电流(CA)和计时电位(CP)电化学测试显示, 与其它3种碳载体的Pd催化剂相比, 石墨烯负载Pd催化剂对甲酸电催化氧化的催化活性和稳定性最好.

关键词: 石墨烯, 钯, 甲酸氧化, 载体, 催化剂

Abstract: Graphite oxide (GO) was prepared from by Hummers method. Then the graphene nanosheets supporting Pd catalysts were prepared by a single-step chemical reduction method. The electrocatalytic performance for formic acid oxidation of the prepared Pd/graphene composite was studied as an electrode material in comparison with the composite catalysts based on the other carbons (MWCNTs, SWCNTs, and Vulcan XC-72 carbon black). X-ray diffraction (XRD) and transmission electron microscopy (TEM) measurements indicated that the Pd nanoparticles were well dispersed on the surface of the graphene nanosheets with a small particle size. The electrocatalytic oxidation of formic acid was studied by electrochemically active surface area (ECSA), cyclic voltammetry (CV), chronoamperometry (CA), and chronopotentiometry (CP) measurements. It was found that the Pd/graphene composites had better catalytic activity than the other catalysts toward formic acid oxidation.

Key words: Palladium, Formic acid oxidation, Supports, Catalyst

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