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

Chem. J. Chinese Universities ›› 2011, Vol. 32 ›› Issue (6): 1373.

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

XIE Guo-Fang¹, LU Tian-Hong^1,2, YANG Gai-Xiu³, CHEN Yu¹, ZHOU Yi-Ming¹, TANG Ya-Wen^1,4*

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.

Abstract

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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XIE Guo-Fang, LU Tian-Hong, YANG Gai-Xiu, CHEN Yu, ZHOU Yi-Ming, TANG Ya-Wen*. Preparation and Mechanism of Carbon Supported Pt Catalyst Using Pt(NO3)2 and Ethylenediaminetetraacetic Acid[J]. Chem. J. Chinese Universities, 2011, 32(6): 1373.

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

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