物理化学学报 >> 2011, Vol. 27 >> Issue (02): 468-472.doi: 10.3866/PKU.WHXB20110210

电化学和新能源 上一篇    下一篇

电沉积制备ZnO纳米棒修饰电极上氧化还原蛋白的电化学行为

韩楠楠2, 王慧2, 栗娜2, 周剑章1,2, 林仲华1,2, 吴迪3, 万国江3   

  1. 1. 厦门大学固体表面物理化学国家重点实验室, 福建 厦门 361005;
    2. 厦门大学化学化工学院化学系, 福建 厦门 361005;
    3. 西南交通大学材料科学与工程学院, 成都 610031
  • 收稿日期:2010-09-26 修回日期:2010-11-12 发布日期:2011-01-25
  • 通讯作者: 周剑章, 万国江 E-mail:jzzhou@xmu.edu.cn, superwgj@263.net
  • 基金资助:

    国家自然科学基金(20603027, 21021002, 20973134)和国家高技术研究发展专项经费项目(2009AA03Z327)资助

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 E-mail:jzzhou@xmu.edu.cn, superwgj@263.net
  • 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)

摘要:

采用恒电位阴极还原法在金电极表面一步修饰ZnO纳米棒, 制备成ZnO纳米棒修饰电极. 扫描电子显微镜(SEM)和X射线衍射(XRD)结果显示制得的ZnO为直径约100 nm的六棱柱状纤锌矿晶体纳米棒. 使用ZnO纳米棒修饰的金电极研究细胞色素c的直接电化学行为, 结果表明: ZnO纳米棒修饰的金电极能有效探测到细胞色素c的铁卟啉辅基在不同价态下的电化学行为; 细胞色素c吸附后, ZnO纳米棒修饰的金电极对过氧化氢的电流响应呈现良好的线性关系.

关键词: ZnO纳米棒, 电沉积, 氧化还原蛋白, 细胞色素c

Abstract:

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

MSC2000: 

  • O646