在聚邻甲苯胺 (POT)膜修饰电极上用电化学法沉积Pt微粒 ,由SEM与XRD表征其表面形态与晶面取向 ,同时研究异丙醇在金属化POT膜电极上的氧化行为 .结果表明 ,Pt在POT膜上的沉积呈现晶面择优取向的现象 ,况且POT质子掺杂后 ,由于电化学活性增强 ,影响了沉积铂微粒的尺寸和粒径分布 .异丙醇的电氧化可发生在POT的电化学活性区 ,当电位大于 0 .70V(SCE)时 ,POT不再呈氧化还原活性 ,异丙醇的电氧化主要在铂微粒上进行 .聚合物不仅作为铂微粒的载体而且自身参加反应 ,这种微异相催化体系需用新的模型描述 Pt particles were electrochemically deposited on poly-o-toluidine (POT) film modified electrode, and the surface morphology and crystal orientation were characterized by SEM and XRD. The oxidation behavior of isopropanol on the POT film electrode was also studied. It is indicated that the deposition of Pt on the POT film shows the preferential orientation of the crystal plane. Moreover, after the POT proton doping, the size and particle size distribution of the deposited platinum particles are affected due to the enhancement of the electrochemical activity. The electrooxidation of isopropanol may occur In the electrochemically active region of POT, the POT no longer exhibits redox activity at potentials greater than 0,70 V (SCE), and the electrooxidation of isopropanol proceeds predominantly on platinum microparticles. The polymer not only acts as a carrier for platinum microparticles but also itself To participate in the reaction, this heterogeneous catalytic system needs a new model description