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  

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

作　　者：韩楠楠[1] 王慧[1] 栗娜[1] 周剑章[2,1] 林仲华[2,1] 吴迪[3] 万国江[3] 

机构地区：[1]厦门大学化学化工学院化学系,福建厦门361005 [2]厦门大学固体表面物理化学国家重点实验室,福建厦门361005 [3]西南交通大学材料科学与工程学院,成都610031

出　　处：《物理化学学报》2011年第2期468-472,共5页Acta Physico-Chimica Sinica

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

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100nm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.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.

关 键 词：ZNO纳米棒 电沉积 氧化还原蛋白 细胞色素C 

分 类 号：O646.54[理学—物理化学]