磷钼杂多酸-聚吡咯膜修饰碳纤维微电极的制备及其电化学性能研究

Investigations on the Preparation of 1∶12 Phosphomolybdic Acid Polypyrrole Film Modified Carbon Fiber Microelectrode and Its Electrochemical Properties

用电化学方法将磷钼杂多酸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磷钼杂多酸掺杂的聚吡咯膜修饰碳纤维微电极。该电极既保持了磷钼杂多酸的电化学活性和电催化性能，又具有良好的稳定性。在酸性水溶液中不仅能催化还原ＣｌＯ－３，而且对ＮＯ－２离子有着更显著的电催化还原作用。

The 1∶12 phosphomolybdic anions doped to polypyrrole (PMo 12 /PPy/CF) film modified carbon fiber microelectrodes with surface function have been prepared by fixing the phosphomolybdic acid catalyzer on the conductive polypyrrole film electrode by electrochemical method .This modified microelectrode not only maintains the electrochemical and electrocatalytic properties of phosphomolybdic acid,but also has good stability.The PMo 12 in PPy film can catalyze the reduction of ClO - 3 and NO - 2is much larger than that on ClO - 3.