Galvanostatic and pulse potential synthesis of poly-3-methylthiophene. Polymer as catalytic support

Poly-3-methylthiophene (P3MT) films were electropolymerised on graphite and indium tin oxide electrodes and characterised by cyclic voltammetry and sc anning electron microscopy. The polymerisation was carried out by two diffe rent techniques, pulse potential program and constant current density, yiel ding conducting coated polymeric electrodes. The polymeric films display st ructural differences depending on the polymerisation method. The conducting properties of the polymers also depend on the electropolymerisation method . Polymeric resistance and stability were studied. P3MT was used as a support for the anchoring of Pt and Ph metal particles. The catalytic oxidation of formic acid was studied with these electrodes an d compared with that obtained with graphite/Pt massive electrodes. (C) 2000 Elsevier Science Ltd. All rights reserved.