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
炭载体改性对炭载Pd催化剂电催化性能的影响
English
Effect of Carbon Modification on Electrocatalytic Performance of Carbon Supported Pd Catalysts
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.
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