【摘要】 用电位扫描方法将混配型杂多阴离子α－ ＳｉＭｏ３ Ｗ９Ｏ４０４－ （ 简写为α－ ＳｉＭｏ３Ｗ９） 催化剂固定在导电聚吡咯膜电极上，从而制得具有表面功能的α－ ＳｉＭｏ３Ｗ９ 掺杂的聚吡咯膜修饰玻碳电极．该电极具有良好的电化学活性和稳定性，并对ＮＯ２－ 的还原起电催化作用．实验结果表明，α－ ＳｉＭｏ３Ｗ９ 在膜中的还原过程由溶液中的三步单电子还原转化为一步双电子和一步单电子还原．更多还原

【Abstract】 In this paper, the heteropolyanion (α-SiMo 3W 9O 40 4- ) doped to polypyrrole film modified glassy carbon electrode (α-SiMo 3W 9/PPy/GC) with surface function was prepared by fixing the α-SiMo 3W 9O 40 4- catalyst on the conducting polypyrrole film electrode by cyclic potential scan. Cyclic voltammetry was used to study the electrochemical behaviour of α-SiMo 3W 9O 40 4- and α-SiMo 3W 9/PPy/GC film modified electrode. The modified electrode exhibits very good stability, electrochemical behaviour and catalytic effect on the reduction of nitrite in pH<4.0 solutions.更多还原