Acta Phys. -Chim. Sin. ›› 2014, Vol. 30 ›› Issue (2): 325-330.doi: 10.3866/PKU.WHXB201312242

• ELECTROCHEMISTRY AND NEW ENERGY • Previous Articles     Next Articles

Preparation of AuPd and Au Microarrays on ITO and Characterization of Electrocatalytic Activity with SECM

SU Tong-Yu1, XIAO Xiao-Jian1, YE Meng-Wei1, TIAN Xiao-Chun1, LIN Jian-Hang2, TANG Jing1   

  1. 1 Key Laboratory of Analysis and Detection Technology for Food Safety, Ministry of Education, College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou 350116, P. R. China;
    2 Instrumental Measurement and Analysis Center, Fuzhou University, Fuzhou 350002, P. R. China
  • Received:2013-10-29 Revised:2013-12-20 Published:2014-01-23
  • Contact: TANG Jing E-mail:jingtang@fzu.edu.cn
  • Supported by:

    The project was supported by the National Natural Science Foundation of China (21173048, 21073038).

Abstract:

Au and AuPd arrays were deposited onto an indium tin oxide (ITO) surface by the electrochemical wet stamping method. Agarose stamp with microstructures and solution was used to electrodeposit and generate patterns of a certain thickness. Field emission scanning electron microscopy (FE-SEM), energy-dispersive X-ray analysis (EDX), and atomic force microscopy (AFM) were employed to characterize the morphology and components on the surface. Tip generation-substrate collection (TG-SC) mode and redox-competition (RC) mode of scanning electrochemical microscopy (SECM) combined with cyclic voltammetry were used to explore the electrocatalytic activity of the alloy arrays. In the study of the electrocatalysis, AuPd exhibited higher activity for the reduction of H2O2 than pure Au, but lower activity for that of ferrocenemethanol oxide (FcMeOH+).

Key words: Agarose, AuPd alloy array, Electrochemical wet stamping method, Scanning electrochemical microscopy

MSC2000: 

  • O646