Citation: HAN Nan-Nan, WANG Hui, LI Na, ZHOU Jian-Zhang, LIN Zhong-Hua, WU Di, WAN Guo-Jiang. Electrochemical Behavior of Redox Proteins on ZnO Nanorod-Modified Electrodes Prepared by Electrodeposition[J]. Acta Physico-Chimica Sinica, ;2011, 27(02): 468-472. doi: 10.3866/PKU.WHXB20110210
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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 hexa nal 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.
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Keywords:
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ZnO nanorod
, - Electrodeposition,
- Redox protein,
- Cytochrome c
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