Electrocatalytic properties of platinum doped polyaniline and polypyrrole electrodes

Abstract

Polymer films, known as polymer modified electrodes, with metal particles incorporated into the film either during film formation or by electrodeposition onto the polymer films, were found to be good catalysts for certain electrochemical reactions of importance for application in fuel cells . In particular, the use of platinum particles seems to be very advantageous. When platinum is deposited electrochemically, the particules are distributed three dimensionally in the layer due to the porosity of the polymer. Among the polymer films, polyaniline and polypyrrole have certain advantages over other conducting polymers, including simplicity and rapidity of preparation by electrochemical methods, chemical durability against aerial oxidation, and the ability to be formed in aqueous electrolytic solutions2−7 . In the present study, electrooxidation of methanol, ethylene glycol and D-glucose is reviewed as function of deposition potential of platinum. Effect of the temperature and concentration of the organic molecules are also investigated.