Comparative electrooxidation of nitrite by electrodeposited Co(II), Fe(II) and Mn(III) tetrakis (benzylmercapto) and tetrakis (dodecylmercapto) phthalocyanines on gold electrodes

被引：59

作者：

Agboola, Bolade ^{[1
]}

Nyokong, Tebello ^{[1
]}

机构：

[1] Rhodes Univ, Dept Chem, ZA-6140 Grahamstown, South Africa

来源：

ANALYTICA CHIMICA ACTA | 2007年 / 587卷 / 01期

基金：

新加坡国家研究基金会;

关键词：

metallophthalocyanines complexes; cyclic voltammetry; electrodeposition; electrocatalysis; nitrite oxidation;

D O I：

10.1016/j.aca.2007.01.031

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

This work reports on the electrooxidation of nitrite using Co(II), Fe(II) and Mn(III) tetrakis (benzylmercapto) and tetrakis (dodecylmercapto) phthalocyanines electrodeposited onto a gold electrode. Good catalytic activity (in terms of lowering overpotential) was obtained for these molecules when compared to previously reported We catalysts. The catalytic current was found to vary linearly with nitrite concentration in the range employed in this work (0.1-1 mM) and high sensitivities ranging from 6.9 to 9.9 mu A mM(-1) were observed for all the modified electrodes. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：116 / 123

页数：8

共 29 条

[1] Synthesis and electrochemical properties of benzyl-mercapto and dodecyl-mercapto tetrasubstituted manganese phthalocyanine complexes [J].

Agboola, Bolade ;

Ozoemena, Kenneth I. ;

Westbroek, Philippe ;

Nyokong, Tebello .

ELECTROCHIMICA ACTA, 2007, 52 (07) :2520-2526

[2] Synthesis and electrochemical characterisation of benzylmercapto and dodecylmercapto tetra substituted cobalt, iron, and zinc phthalocyanines complexes [J].

Agboola, Bolade ;

Ozoemena, Kenneth I. ;

Nyokong, Tebello .

ELECTROCHIMICA ACTA, 2006, 51 (21) :4379-4387

[3] Electrochemical properties of benzylmercapto and dodecylmercapto tetra substituted nickel phthalocyanine complexes: Electrocatalytic oxidation of nitrite [J].

Agboola, Bolade O. ;

Ozoemena, Kenneth I. ;

Nyokong, Tebello .

ELECTROCHIMICA ACTA, 2006, 51 (28) :6470-6478

[4]

BARD AJ, 1980, ELECTROCHEMICAL METH

[5] DETECTION OF NITRITE USING ELECTRODES MODIFIED WITH AN ELECTRODEPOSITED RUTHENIUM-CONTAINING POLYMER [J].

BARISCI, JN ;

WALLACE, GG .

ANALYTICAL LETTERS, 1991, 24 (11) :2059-2073

[6] Electrocatalytic oxidation of nitrite on a vitreous carbon electrode modified with cobalt phthalocyanine [J].

Caro, CA ;

Bedioui, F ;

Zagal, JH .

ELECTROCHIMICA ACTA, 2002, 47 (09) :1489-1494

[7] OXIDATIVE FLOW-INJECTION AMPEROMETRIC DETERMINATION OF NITRITE AT AN ELECTROCHEMICALLY PRE-TREATED GLASSY-CARBON ELECTRODE [J].

CHAMSI, AY ;

FOGG, AG .

ANALYST, 1988, 113 (11) :1723-1727

[8]

CHEBOTAREVA N, 1997, J COORD CHEM, V46, P435

[9] DETERMINATION OF NITRATE AND NITRITE IN MEAT-PRODUCTS BY USING A NITRATE ION-SELECTIVE ELECTRODE [J].

CHOI, KK ;

FUNG, KW .

ANALYST, 1980, 105 (1248) :241-245

[10] Characterisation of a micro-total analytical system for the determination of nitrite with spectrophotometric detection [J].

Greenway, GM ;

Haswell, SJ ;

Petsul, PH .

ANALYTICA CHIMICA ACTA, 1999, 387 (01) :1-10

← 1 2 3 →