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Citation: 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 Physico-Chimica Sinica, ;2010, 26(05): 1311-1316. doi: 10.3866/PKU.WHXB20100521 shu

Effect of Carbon Modification on Electrocatalytic Performance of Carbon Supported Pd Catalysts

1.
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

Received Date: 9 October 2009
Available Online: 1 April 2010

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.
- Activated carbon,
- Carbon supported Pd catalyst,
- Nitric acid treatment,
- Ammonia treatment,
- Formic acid oxidation
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