Copper hexacyanoferrate multilayer films on glassy carbon electrode modified with 4-aminobenzoic acid in aqueous solution

被引：56

作者：

Yang, GC

Shen, Y

Wang, MK

Chen, HJ

Liu, BF

Dong, SJ ^{[1
]}

机构：

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

[2] Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China

来源：

TALANTA | 2006年 / 68卷 / 03期

基金：

中国国家自然科学基金;

关键词：

4-aminobenzoic acid; covalent modification; glassy carbon electrode; copper hexacyanoferrate; self-assembly multilayer film;

D O I：

10.1016/j.talanta.2005.05.017

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

4-Aminobenzoic acid (4-ABA) was covalently grafted on a glassy carbon electrode (GCE) by amine cation radical formation during the electrooxidation process in 0.1 M KCl aqueous Solution. X-ray photoelectron spectroscopy (XPS) measurement proves the presence of 4-carboxylphenylamine on the GCE. Electron transfer processes of Fe(CN)(6)(3-) in solutions of various pHs at the modified electrode are studied by both cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). Changing the solution pH would result in the variation of the terminal group's charge state, based on which the surface pK(a) values were estimated. The copper hexacyanoferrate (CuHCF) multilayer films were formed on 4-ABA/GCE prepared in aqueous solution, and which exhibit good electrochemical behavior with high stability. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：741 / 747

页数：7

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