Layer-by-layer assembly of multilayer films consisting of silicotungstate and a cationic redox polymer on 4-aminobenzoic acid modified glassy carbon electrode and their electrocatalytic effects

被引：77

作者：

Cheng, L ^{[1
]}

Liu, JY ^{[1
]}

Dong, SJ ^{[1
]}

机构：

[1] Chinese Acad Sci, Changchun Inst Appl Chem, Electroanalyt Chem Lab, Changchun 130022, Jilin, Peoples R China

来源：

ANALYTICA CHIMICA ACTA | 2000年 / 417卷 / 02期

基金：

中国国家自然科学基金;

关键词：

layer-by-layer assembly; 4-aminobenzoic acid; silicotungstate; electrocatalytical reduction;

D O I：

10.1016/S0003-2670(00)00931-4

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A novel 4-aminobenzoic acid (4-ABA) monolayer film is formed on glassy carbon electrode (GCE) by amino cation radical method. Silicotungstic heteropolyanion (SiW12O404-, denoted as SiW12)-containing multilayer films have been fabricated on the 4-ABA modified GCE surface by alternate deposition with a quaternized poly(4-vinylpyridine) partially complexed with [Os(bpy)(2)Cl](2+/+) (denoted as QPVP-Os). Cyclic voltammetry (CV), X-ray photoelectron spectroscopy (XPS) and X-ray reflectivity (XR) have been used to characterise the as-prepared multilayer films. It is proved that the multilayer films are uniform and stable. The average thickness for a bilayer of QPVP-Os/SiW12 in the multilayer film is 30.2 Angstrom. The electrocatalytic activities of the multilayer films have been investigated on the reduction of three substrates of important analytical interests, HNO2, BrO3- and H2O2. Especially, the influence of layer number of the multilayer films on the electrocatalytic reduction of HNO2 has been investigated in detail. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：133 / 142

页数：10

共 44 条

[1] EFFECT OF QUATERNIZATION ON ELECTRON-DIFFUSION COEFFICIENTS FOR REDOX HYDROGELS BASED ON POLY(4-VINYLPYRIDINE) [J].