Formation of a robust and stable film comprising ionic liquid and polyoxometalate on glassy carbon electrode modified with multiwalled carbon nanotubes: Toward sensitive and fast detection of hydrogen peroxide and iodate

被引：79

作者：

Haghighi, Behzad ^{[1
]}

Hamidi, Hassan ^{[1
]}

Gorton, Lo ^{[2
]}

机构：

[1] Inst Adv Studies Basic Sci, Dept Chem, Gava Zang, Zanjan, Iran

[2] Lund Univ, Inst Chem, S-22100 Lund, Sweden

来源：

ELECTROCHIMICA ACTA | 2010年 / 55卷 / 16期

基金：

瑞典研究理事会;

关键词：

Phosphomolybdic acid; Ionic liquid; Modified electrode; H2O2; Iodate; MODIFIED GRAPHITE ELECTRODE; ELECTROCATALYTIC REDUCTION; ELECTROCHEMICAL PROPERTIES; PASTE ELECTRODE; COMPOSITE FILM; SURFACE MODIFICATIONS; GLUCOSE BIOSENSOR; H2O2; REDUCTION; SILICA-GEL; BROMATE;

D O I：

10.1016/j.electacta.2010.03.041

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A robust and stable film comprising n-octylpyridinum hexafluorophosphate ([C8Py][PF6]) and 1:12 phosphomolybdic acid (PMo12) was prepared on glassy carbon electrodes modified with multiwall carbon nanotubes (GCE/MWCNTs) by dip-coating. The cyclic voltammograms of the GCE/MWCNTs/[C8Py][PF6]-PMo12 showed three well-defined pairs of redox peaks due to the PMo12 system. The surface coverage for the immobilized PMo12 and the average values of the electron transfer rate constant for three pairs of redox peaks were evaluated. The GCE/MWCNTs/[C8Py][PF6]-PMo12 showed great electrocatalytic activity towards the reduction of H2O2 and iodate. The kinetic parameters of the catalytic reduction of hydrogen peroxide and iodate at the electrode surface and analytical features of the sensor for amperometric determination of hydrogen peroxide and iodate were evaluated. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：4750 / 4757

页数：8

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