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2012 , Vol. 70 >Issue 10: 1159 - 1165

DOI: https://doi.org/10.6023/A1111232

研究论文

Au/Si 载体负载单层Pt 催化剂的制备及其电催化性能的研究

  • 佟浩 ,
  • 张艳玲 ,
  • 朱佳佳 ,
  • 张校刚 ,
  • 何卫 ,
  • 杨苏东 ,
  • 何建平
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  • 南京航空航天大学材料科学与技术学院 南京 210016

收稿日期: 2011-11-23

  修回日期: 2012-01-28

  网络出版日期: 2012-02-06

基金资助

中国博士后基金(No. 2011M500910)和南京航空航天大学基本科研业务费专项基金(No. NS2010165/56Y1066-062)资助项目.

收起

Preparation of Mono-layer Pt Catalyst Supported on Au/Si and Its Electrochemical Properties

  • Tong Hao ,
  • Zhang Yanling ,
  • Zhu Jiajia ,
  • Zhang Xiaogang ,
  • He Wei ,
  • Yang Sudong ,
  • He Jianping
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  • College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016

Received date: 2011-11-23

  Revised date: 2012-01-28

  Online published: 2012-02-06

Supported by

Project supported by Chinese Postdoctor Funding (No. 2011M500910) and NUAA Research Funding (No. NS2010165/56Y1066-062).

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摘要

以Si 纳米粉为载体, 通过化学镀的方法在其表面部分沉积纳米Au 颗粒后, 再通过欠电位的方法在Au 颗粒表面沉积了单层及亚单层的Pt. 通过透射电子显微镜(TEM), 循环伏安(CV)等方法对所制备的Pt/Au/Si 催化剂进行了形貌及电化学性能的表征. 结果表明, 该单层Pt 覆盖的Au/Si 催化剂对于甲醇的质量电催化活性是商业E-TEK(Pt/C)的8 倍,相比于不同层数的Pt, 单层覆盖时Pt 的利用率最高, 该单层Pt 负载Au/Si 催化剂对于抑制CO 的中毒的性能也比商业E-TEK(Pt/C)有明显的提高.

关键词： Si 纳米粉; Au/Si 载体; 欠电位; 单层Pt; 电化学催化

本文引用格式

佟浩 , 张艳玲 , 朱佳佳 , 张校刚 , 何卫 , 杨苏东 , 何建平 . Au/Si 载体负载单层Pt 催化剂的制备及其电催化性能的研究[J]. 化学学报, 2012 , 70(10) : 1159 -1165 . DOI: 10.6023/A1111232

Abstract

By using underpotential deposition method, the mono-layer of Pt was prepared on the Au/Si supports fabricated by electroless deposition of Au on Si. The morphology and electrochemical properties of Pt/Au/Si catalyst was characterized by TEM and CV methods. The results show that the mass activity of mono-layer Pt supported on Au/Si is 8 times higher than that of commercial E-TEK (Pt/C) catalyst. Compared with the other multi-layer of Pt, the utilization ratio of mono-layer of Pt is the highest, leading to the higher electro-catalytic properties toward methanol and CO oxidation.

Key words： Si nanoparticles; Au/Si supports; underpotential deposition; monolayer Pt; electro-catalytic properties

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