| 镍取代Dawson型多酸多层膜电极的修饰及循环伏安测试 |
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| 引用本文： | 吕桂琴,韩磊.镍取代Dawson型多酸多层膜电极的修饰及循环伏安测试[J].北京理工大学学报,2006,26(7):639-642. |
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| 作者姓名： | 吕桂琴 韩磊 |
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| 作者单位： | 北京理工大学,理学院,北京,100081;北京理工大学,理学院,北京,100081 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 利用电化学生长法在玻碳电极上制备了含取代Dawson型磷钨杂多酸K8P2W17O61(NiOH2)多层膜修饰电极,通过循环伏安法控制制备和检测多层膜的沉积过程,并对其电化学过程进行系统研究实验表明,在酸性缓冲溶液中,多层膜的循环伏安图中出现3对单电子氧化-还原峰,峰电流和扫描速率的平方根成正比,表明电极过程的控制步骤是扩散过程. 该多层膜修饰电极可催化BrO-3和NO-2的电化学还原过程.
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| 关 键 词： | 取代Dawson型磷钨杂多酸(P2W17Ni) 修饰电极 循环伏安 |
| 文章编号： | 1001-0645(2006)07-0639-04 |
| 收稿时间： | 12 22 2005 12:00AM |
| 修稿时间： | 2005年12月22日 |
Assembly of Multilayer Films Containing P2W17Ni on Electrode and Its Property Studied by Cyclic Voltammetry |
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| L Gui-qin,HAN Lei.Assembly of Multilayer Films Containing P2W17Ni on Electrode and Its Property Studied by Cyclic Voltammetry[J].Journal of Beijing Institute of Technology(Natural Science Edition),2006,26(7):639-642. |
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| Authors: | L Gui-qin HAN Lei |
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| Institution: | School of Science, Beijing Institute of Technology, Beijing 100081, China |
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| Abstract: | Multilayer films composed of substituted heteropolytungstate anions(P_2W_(17)Ni) and cationic polydimethyldiallylammonium chloride(PDDA) were prepared on 4-aminothiophenol(4-ATP) modified glassy carbon electrode by electrostatic layer-by-layer adsorption.Cyclic voltammetry have been employed to monitor the deposition process of the multilayer films and study the electrochemical properties of the modified electrode.In buffer solutions,the multilayer films exhibit three one-electron redox processes.The peak current is linearly in proportion to the square root of the scan rate(v~(1/2)),which shows that the electrochemical behavior is diffusion-controlled.The multilayer film electrode has an electrocatalytic response to the reduction of BrO~-_3 and NO~-_2. |
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| Keywords: | substituted heteropolytungstate anions modified electrode cyclic voltammetry |
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