Electropolymerization of Pyrrole on ITO Electrode Modified with Au Nano-island

Abstract

Au nanoparticles were immobilized on glass plate with ITO film by pulsed electrolysis. Using the product (Au-ITO) as an electrode, an electrochemical polymerization of pyrrole was carried out by continuous potential sweeps, and the  polymerization process was compared with that on an untreated ITO electrode (ITO).  As a result, it was confirmed that the oxidation of pyrrole on Au-ITO electrode occurred at more negative potential (at least 200 mV) than that on ITO electrode.  It was also found that the use of Au-ITO can suppress the electrochemical deactivation of the polypyrrole during the polymerization.