高等学校化学学报

高等学校化学学报 ›› 2011, Vol. 32 ›› Issue (6): 1373.

• 研究论文 • 上一篇    下一篇

用乙二胺四乙酸和Pt(NO3)2制备Pt/C催化剂及其形成机理

谢国芳1, 陆天虹1,2, 杨改秀3, 陈煜1, 周益明1, 唐亚文1,4   

  1. 1. 南京师范大学化学与材料科学学院, 南京 210097; 
    2. 中国科学院长春应用化学研究所, 长春 130022; 
    3. 中国科学院广州能源研究所,  可再生能源与天然气水合物重点实验室, 广州 510640;
    4. 南京理工大学材料化学实验室, 南京  210094
  • 收稿日期:2010-07-13 修回日期:2010-10-15 出版日期:2011-06-10 发布日期:2011-05-10
  • 通讯作者: 唐亚文 E-mail:tangyawen@njnu.edu.cn
  • 基金资助:

    国家“八六三”计划项目(批准号: 2007AA05Z143, 2007AA05Z159)和国家自然科学基金(批准号: 20873065, 21073094)资助.

Preparation and Mechanism of Carbon Supported Pt Catalyst Using Pt(NO3)2 and Ethylenediaminetetraacetic Acid

XIE Guo-Fang1, LU Tian-Hong1,2, YANG Gai-Xiu3, CHEN Yu1, ZHOU Yi-Ming1, TANG Ya-Wen1,4*   

  1. 1. School of Chemistry and Material Science, Nanjing Normal University, Nanjing 210097, China;
    2. Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China;
    3. Guangzhou Institute of Energy Conversion, Key Laboratory of Renewable Energy and Gas Hydrate, Chinese Academy of Sciences, Guangzhou 510640, China;
    4. Materials Chemistry Laboratory, Nanjing University of Science and Technology, Nanjing 210094, China
  • Received:2010-07-13 Revised:2010-10-15 Online:2011-06-10 Published:2011-05-10
  • Contact: TANG Ya-Wen E-mail:tangyawen@njnu.edu.cn
  • Supported by:

    国家“八六三”计划项目(批准号: 2007AA05Z143, 2007AA05Z159)和国家自然科学基金(批准号: 20873065, 21073094)资助.

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被引次数

1

摘要： 在用Pt(NO3)2作前驱体制备Pt/C催化剂时，乙二胺四乙酸(EDTA)的存在能有效地降低Pt粒子粒径并改善其分散度。发现加入EDTA不能与Pt2+配位形成络合物，而是通过静电作用将Pt2+包裹起来，使生成的Pt粒子不易团聚，得到的Pt/C催化剂中Pt粒子的平均粒径为3 nm，而且分布均匀，因此，得到的Pt/C催化剂对甲醇氧化有很好的电催化活性和稳定性。

关键词: Pt催化剂, 乙二胺四乙酸, 直接甲醇燃料电池, 静电作用, 甲醇氧化

Abstract: During the preparation of carbon supported Pt (Pt/C) catalyst using Pt(NO3)2 as the precursor, ethylenediaminetetraacetic acid (EDTA) can effectively reduce the average diameter of the Pt particle and improve the dispersion degree. This effect is not due to that EDTA coordinates with Pt2+, forming the complex, but due to that EDTA would wrap Pt2+ through the electrostatic interaction. The average diameter of the Pt particles in the Pt/C catalyst obtained is only 3 nm and the dispersion of the Pt particles is uniform. Therefore, the Pt/C catalyst obtained has the excellent electrocatalytic activity and stability for methanol oxidation.

Key words: Carbon supported Pt catalyst, Ethylenediaminetetraacetic acid, Direct methanol fuel cell, Electrostatic interaction, Methanol oxidation

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