Acta Phys. -Chim. Sin. ›› 2011, Vol. 27 ›› Issue (02): 468-472.doi: 10.3866/PKU.WHXB20110210

• ELECTROCHEMISTRY AND NEW ENERGY • Previous Articles     Next Articles

Electrochemical Behavior of Redox Proteins on ZnO Nanorod-Modified Electrodes Prepared by Electrodeposition

HAN Nan-Nan2, WANG Hui2, LI Na2, ZHOU Jian-Zhang1,2, LIN Zhong-Hua1,2, WU Di3, WAN Guo-Jiang3   

  1. 1. State Key Laboratory of Physical Chemistry of the Solid Surface, Xiamen University, Xiamen 361005, Fujian Province, P. R. China;
    2. Department of Chemistry, College of Chemical Engineering, Xiamen University, Xiamen 361005, Fujian Province, P. R. China;
    3. School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, P. R. China
  • Received:2010-09-26 Revised:2010-11-12 Published:2011-01-25
  • Contact: ZHOU Jian-Zhang, WAN Guo-Jiang,
  • Supported by:

    The project was supported by the National Natural Science Foundation of China (20603027, 21021002, 20973134) and National High Technology Research and Development Program of China (2009AA03Z327)


We successfully prepared ZnO nanorod-modified Au (ZnO nanorod/Au) electrodes using one-step cathodic electrodeposition. Scanning electron microscopy (SEM) and X-ray diffraction (XRD) were used to characterize the morphology and crystal phase of the ZnO nanorods. The data showed that the ZnO nanorods were wurtzite type crystals with a hexagonal rod shape and a diameter of about 100 nm and that the ZnO nanorods were arranged well on the surface of electrodes. These ZnO nanorod-modified electrodes were able to detect direct electron transfer from cytochrome c (cyt c). Cyclic voltammograms showed that the direct electron transfer of cyt c with heme iron in different valence states was easily achieved by the ZnO nanorod/Au electrode. Data of amperometric responses demonstrated that a linear amperometric response to hydrogen peroxide was observed on the ZnO nanorod/Au electrodes after adsorbing cyt c.

Key words: ZnO nanorod, Electrodeposition, Redox protein, Cytochrome c


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