Preparation and characterization of Ti-supported nanostructured Pt electrodes by electrophoretic deposition

Ti-supported nanostructured Pt electrodes were prepared by the electrophore tic deposition of monodispersed Pt nanoparticles synthesized in reverse mic elles. The crystal structure of the obtained electrodes was characterized b y XRD, and their electrochemical properties were investigated by cyclic vol tammetry in 1.0 mel dm(-3) NaOH solutions. It was observed that the electro chemical activities of the obtained electrodes were much higher than that o f the bulk Pt electrode. With the increase in the heat-treatment temperatur e, the relative percentage of Pt (100) planes increased and the electrochem ical activity was reduced due to sintering. In addition, the nanostructured PI electrode with unpolished Ti support showed higher electrochemical acti vity than that with polished Ti support because of less serious sintering. (C) 2001 Elsevier Science Ltd. All rights reserved.