Chitosan-assisted fabrication and electrocatalytic activity of the composite film electrode of heteropolytungstate/carbon nanotubes

被引：40

作者：

Guo, Weihua ^{[1
]}

Xu, Lin ^{[1
]}

Li, Fengyan ^{[1
]}

Xu, Bingbing ^{[1
]}

Yang, Yaobin ^{[1
]}

Liu, Shuping ^{[1
]}

Sun, Zhixia ^{[1
]}

机构：

[1] NE Normal Univ, Coll Chem, Minist Educ, Key Lab Polyoxometalates Sci, Changchun 130024, Peoples R China

来源：

ELECTROCHIMICA ACTA | 2010年 / 55卷 / 05期

基金：

中国国家自然科学基金;

关键词：

Heteropolytungstate; Chitosan; Carbon nanotubes; Electrocatalysis; MULTIWALL CARBON NANOTUBES; KEGGIN-TYPE HETEROPOLYANIONS; ELECTROCHEMICAL-BEHAVIOR; HYDROGEN-PEROXIDE; MULTILAYER FILMS; L-CYSTEINE; POLYOXOMETALATE; IMMOBILIZATION; OXIDATION; REDUCTION;

D O I：

10.1016/j.electacta.2009.10.003

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A novel chemically modified electrode based on the immobilization of heteropolytungstate in carbon nanotubes-chitosan (CNTs-chitosan) composite film by one step self-assembly technique was fabricated. Chitosan was chosen as a natural polymer for dispersing CNTs to form a stable CNTs-chitosan composite, which provided an interface containing amino groups for assembling [P2W18O62](6-) (abbr. P2W18) by electrostatic interactions. The CNTs-chitosan composite film was investigated and characterized by infrared spectroscopy (IR), cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The CNT-chitosan film provides a high active area and good conduction pathway, and enhances the adsorptive capability of P2W18 molecules on the film. The electrochemical behavior of the P2W18/CNTs-chitosan/GCE was studied in detail, including scan rate, pH dependence, and stability. The CV and amperometry studies demonstrate that the P2W18/CNTs-chitosan/CCE has fast response and good electrocatalytic activity for the reduction of S2O82- and IO3- anions in acidic aqueous solution. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：1523 / 1527

页数：5

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