Platinum-palladium loaded polypyrrole film electrodes for the electrooxidation of D-glucose in neutral media

Modified polymer films with metal particles incorporated into the films by electrodeposition are known as possible electrocatalysts for various electr ode reactions such as fuel cell applications. This work presents some resul ts concerning the electrooxidation of D-glucose at modified polymer film el ectrodes prepared on a platinum substrate. This reaction has a great deal o f interest in view of its applications to detection systems (glucose sensor ), fuel cells (pacemakers) and electroorganic systhesis. The modified polym er film electrodes contain platinum and/or palladium particles dispersed in the polypyrrole film by electrodeposition in neutral media. Addition of pa lladium to platinum modifies the electrocatalytic behaviour of the electrod e drastically. The modification is thought to involve minimisation of the p oisoning of the catalyst, hence increasing its electrode activity. (C) 1999 Elsevier Science S.A. All rights reserved.