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Journal of Nanomaterials
Volume 2011, Article ID 614983, 8 pages
http://dx.doi.org/10.1155/2011/614983
Research Article

Electrocatalytic Activity for CO, MeOH, and EtOH Oxidation on the Surface of Pt-Ru Nanoparticles Supported by Metal Oxide

Department of Chemistry, Hannam University, Daejeon 305-811, Republic of Korea

Received 15 June 2011; Accepted 14 September 2011

Academic Editor: Steve Acquah

Copyright © 2011 Kwang-Sik Sim et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

This paper describes the electrocatalytic activity for CO, MeOH, and EtOH oxidation on the surface of Pt-Ru nanoparticles supported by metal oxide (Nb--H) prepared for use in a fuel cell. To prepare Nb--supported Pt-Ru nanoparticles, first, the Nb- supports were prepared by sol-gel reaction of titanium tetraisopropoxide with a small amount of the niobium ethoxide in polystyrene (PS) colloids. Second, Pt-Ru nanoparticles were then deposited by chemical reduction of the Pt4+ and Ru3+ ions onto Nb- supports (Pt-Ru@Nb--CS). Nb element was used to reduce electrical resistance to facilitate electron transport during the electrochemical reactions on a fuel cell electrode. Finally, the Pt-Ru@Nb--H catalysts were formed by the removal of core-polystyrene ball from Pt-Ru@-CS at . The successfully prepared Pt-Ru electrocatalysts were confirmed via TEM, XPS, and ICP analysis. The electrocatalytic efficiency of Pt-Ru nanoparticles was evaluated via CO, MeOH, and EtOH oxidation for use in a direct methanol fuel cell (DMFC). As a result, the Pt-Ru@Nb--H electrodes showed high electrocatalytic activity for the electrooxidation of CO, MeOH, and EtOH.