Affordable Access

Publisher Website

Electrooxidation of methanol on Pt microparticles dispersed on SnO2thin films

Authors
Journal
Electrochimica Acta
0013-4686
Publisher
Elsevier
Publication Date
Volume
50
Issue
13
Identifiers
DOI: 10.1016/j.electacta.2004.11.006
Keywords
  • Methanol
  • Tin Oxide
  • Platinum Microparticles

Abstract

Abstract In this work, we have prepared electrodes through the electrodeposition of platinum micro particles on SnO 2 thin films in order to verify the application of this system as a catalyst for the electrooxidation of methanol. The oxide films were prepared through the method of polymeric precursor decomposition and calcinated at 550 °C. The employed oxides have proved to be a good matrix for the dispersion of platinum particles since they present high roughness. The maximum electrooxidation current was attained for a platinum content of approximately 600 μg cm −2. The chronoamperometric results showed that the current values obtained for the electrooxidation of methanol were up to 10 times higher than the current values obtained with platinized platinum under the same conditions. The possible mechanisms that lead to this enhancement were discussed.

There are no comments yet on this publication. Be the first to share your thoughts.