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化学学报
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化学学报 ›› 2010, Vol. 68 ›› Issue (22): 2290-2296. 上一篇    下一篇

研究论文

[PCu(H2O)Mo11O39]5－/PAMAM多层复合膜的制备及电化学性质研究

罗明洪2，林深*,1，张晓凤1，陈丽芳1   

  1. (1福建师范大学化学与材料学院 福建省高分子材料重点实验室 福州 350007)
    (2江西教育学院 南昌 330029)
  • 投稿日期:2010-03-06 修回日期:2010-06-07 发布日期:2010-07-20
  • 通讯作者: 林深 E-mail:shenlin@fjnu.edu.cn;shenlinfz@yahoo.com
  • 基金资助:

    国家自然科学基金项目;福建省自然科学基金

Preparation and Electrochemistry Properties of Multilayer Films Constructed from Copper Substituted Polyoxometalate and PAMAM

Luo Minghong2 Lin Shen*,1 Zhang Xiaofeng1 Chen Lifang1   

  1. (1 College of Chemistry and Materials, Fujian Normal University, Fuzhou 350007)
    (2 Jiangxi Institute of Education, Nanchang 330029)
  • Received:2010-03-06 Revised:2010-06-07 Published:2010-07-20

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通过电化学扫描法在玻碳电极和导电玻璃基底上组装制备过渡金属铜取代多金属氧酸盐[PCu(H2O)Mo11O39]5－和4代聚酰胺-胺(G4-PAMAM)交替沉积的复合膜. X射线光电子能谱(XPS), 原子力显微镜(AFM), 循环伏安法(CV)结果表明复合膜成功制备且有好的均匀性. 多层膜中的[PCu(H2O)Mo11O39]5－与其在溶液中的氧化还原行为相比, 电子转移控制速率不同, 该多层膜修饰电极稳定性好, 对 的还原及抗坏血酸的氧化具有较好的电催化性能.

关键词: 铜取代多金属氧酸盐, PAMAM, 多层膜, 电催化

The novel multilayer nano-composite films constructed from copper mono-substituted polyoxometalates ([PCu(H2O)Mo11O39]5－) and a generation-4 poly(amidoamine) dendrimer (PAMAM) were fabricated on ITO conductive glass and glassy carbon electrode by electrochemical scanning method. The composition of the multilayer films was characterized by X-ray photoelectron spectra. Atomic force microscopy presented an uniform surface morphology of the multilayer films. The multilayer films were grown gradually and uniformly in the synthesis process as monitored by cyclic voltammetry. The electrochemical properties of [PCu(H2O)Mo11O39]5－ in the films were different from those in homogeneous aqueous solution. The multilayer films showed good electrocatalytic activity towards the reduction of and oxidation of ascorbic acid (AA).

Key words: copper-substituted polyoxometalate, PAMAM, multilayer films, electrocatalysis