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ISSN 1000-6818CN 11-1892/O6CODEN WHXUEU
Acta Phys Chim Sin >> 2010,Vol.26>> Issue(05)>> 1311-1316     doi: 10.3866/PKU.WHXB20100521         中文摘要
CATALYSIS AND SURFACE STRUCTURE
Effect of Carbon Modification on Electrocatalytic Performance of Carbon Supported Pd Catalysts
DING Liang-Xin, WANG Shi-Rui, ZHENG Xiao-Long, CHEN Yu, LU Tian-Hong, CAO Dian-Xue, TANG Ya-Wen
School of Chemistry and Environmental Science, Nanjing Normal University, Nanjing 210097, P. R. China; College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, P. R. China
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The effect of carbon modification on electrocatalytic performance of carbon supported Pd catalysts was investigated. Fourier transform infrared (FT-IR) spectrometer, X-ray photoelectron spectroscopy (XPS) and Boehm titration measurements demonstrate that the contents of O-containing groups and N-containing groups on the activated carbon surface increase via HNO3 and NH4OHtreatment. Transmission electron microscope (TEM) and electrochemical measurements indicate that the treatment of activated carbon with HNO3 can decrease the size of the Pd particles. Thus, the electrocatalytic activity and stability of the carbon supported Pd catalyst for the oxidation of formic acid are enhanced. The treatment of activated carbon with NH4OH has almost no effect on the Pd particles size, however, the content of Pd0 in the Pd/C catalyst enhances, which leads to the further increase in the electrocatalytic performance the Pd/C catalyst.



Keywords: Activated carbon   Carbon supported Pd catalyst   Nitric acid treatment   Ammonia treatment   Formic acid oxidation  
Received: 2009-10-09 Accepted: 2010-01-04 Publication Date (Web): 2010-04-01
Corresponding Authors: CHEN Yu, TANG Ya-Wen Email: tangyawen@njnu.edu.cn; nsdchenyu@126.com


Cite this article: DING Liang-Xin, WANG Shi-Rui, ZHENG Xiao-Long, CHEN Yu, LU Tian-Hong, CAO Dian-Xue, TANG Ya-Wen. Effect of Carbon Modification on Electrocatalytic Performance of Carbon Supported Pd Catalysts[J]. Acta Phys. -Chim. Sin., 2010,26 (05): 1311-1316.    doi: 10.3866/PKU.WHXB20100521
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