Acta Phys. -Chim. Sin. ›› 2010, Vol. 26 ›› Issue (06): 1488-1492.doi: 10.3866/PKU.WHXB20100541

• ELECTROCHEMISTRY • Previous Articles     Next Articles

Electrodeposition Preparation of a Pt-Ru Alloy Filmand Its Electrochemical Surface-Enhanced IR Absorption Spectroscopy

LI Qiao-Xia, ZHOU Xiao-Jin, LI Jin-Guang, XU Qun-Jie   

  1. Key Laboratory of Shanghai Colleges and Universities for Electric Power Corrosion Control and Applied Electrochemistry, Shanghai University of Electric Power, Shanghai 200090, P. R. China
  • Received:2009-11-26 Revised:2010-01-22 Published:2010-05-28
  • Contact: LI Qiao-Xia E-mail:liqiaoxia@shiep.edu.cn

Abstract:

An electrodeposition approach was developed for the formation of Pt50Ru50 alloy electrodes on a Au-coated Si prismas the infrared window in 1 mmol·L-1 H2PtCl6+1 mmol·L-1 RuCl3+0.1 mol·L-1 H2SO4 solution. The as-prepared Pt50Ru50 alloy electrodes consisted of 100-200 nm nanostructured particles, as determined by atomic force microscope (AFM) image. The significant alloy character of the film and its catalytic activity for CO and CH3OH electrooxidation were demonstrated by conventional electrochemical methods. CO molecules adsorbed on both the Pt and Ru sites of the Pt50Ru50 alloy electrodes could be easily identified using in situ attenuation total reflection (ATR) surface-enhanced infrared (IR) absorption spectroscopy (ATR-SEIRAS). ATR-SEIRAS also revealed that Pt50Ru50 alloy electrodes underwent a bimetallic synergetic effect in catalytic oxidation to CO and CH3OH.

Key words: Catalytic oxidation, Pt50Ru50 alloy film, CO, CH3OH

MSC2000: 

  • O646