中文摘要：

研究了硝酸和氨水改性处理对活性炭表面基团、炭载Pd纳米粒子的形态及其对甲酸氧化电催化性能的影响.傅里叶变换红外（FT-IR）光谱、X射线光电子能谱（XPS）及Boehm滴定结果表明,硝酸和氨水处理分别增加了活性炭表面含氧基团和含氮基团的含量.透射电镜（TEM）及电化学测试显示,活性炭经硝酸处理后,表面负载的Pd粒子粒径降低,催化剂对甲酸氧化活性和稳定性提高.进一步用氨水处理后,Pd粒子的粒径没有明显变化,但催化剂中Pd0的含量增加,催化剂性能进一步提高.

英文摘要：

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 NH4OH treatment.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.