Citation: SU Tong-Yu, XIAO Xiao-Jian, YE Meng-Wei, TIAN Xiao-Chun, LIN Jian-Hang, TANG Jing. Preparation of AuPd and Au Microarrays on ITO and Characterization of Electrocatalytic Activity with SECM[J]. Acta Physico-Chimica Sinica, ;2014, 30(2): 325-330. doi: 10.3866/PKU.WHXB201312242 shu

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

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 Date: 29 October 2013
Available Online: 24 December 2013
Fund Project: 国家自然科学基金(21173048，21073038)资助项目 (21173048，21073038)

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⁺).
- Agarose,
- AuPd alloy array,
- Electrochemical wet stamping method,
- Scanning electrochemical microscopy
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