中文摘要：

采用化学还原法制备了炭载钯（Pd／C）催化剂，浸渍修饰磷钼酸（PMA）制备成复合催化剂．通过XRD和红外谱图（IR）表征催化剂的组分和结构，采用线性扫描曲线及计时电流曲线考察了该电极的电催化性能．研究表明．室温（20℃）PMA-Pd／C电极的H2O2还原电催化活性更优．

英文摘要：

The Pd/C catalyst was prepared with the chemical reduction method, and phosphomolybdic acid （PMA） was modified on the Pd/C catalyst using the dipping method. The compositions and structures of the Pd/C and Pd/C modified by phosphomolybdic acid （PMA-Pd/C） catalysts were characterized with X-ray diffraction and Fourier Transform infrared spectroscopy analyses. The electrocatalytic activity and stability of the catalysts for the reduction of hydrogen peroxide （H202） were studied using cyclic voltammetry and chronoamperometry. The results showed that the phosphomolybdic acid was tightly fixed on the surface of Pd/C catalyst through the chemical interaction. The eletrocatalytic activity of the PMA-Pd/C on H202 reduction is higher than that of the Pd/C catalyst.