Electrochemical sensors based on binuclear cobalt phthalocyanine/surfactant/ordered mesoporous carbon composite electrode

被引：35

作者：

Liu, Ling ^{[1
]}

Guo, Li-ping ^{[1
]}

Bo, Xiang-jie ^{[1
]}

Bai, Jing ^{[1
]}

Cui, Xiu-jun ^{[1
]}

机构：

[1] NE Normal Univ, Fac Chem, Changchun 130024, Jilin, Peoples R China

来源：

ANALYTICA CHIMICA ACTA | 2010年 / 673卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Ordered mesoporous carbon; Binuclear cobalt phthalocyaninehexasulfonate sodium salt; Oxygen; Hemoglobin; 2-Mercaptoethanol; Electrocatalysis; OXYGEN REDUCTION REACTION; TETRASULFONATED PHTHALOCYANINE; FERROCENECARBOXYLIC ACID; IRON PHTHALOCYANINES; REDUCED GLUTATHIONE; NANOPOROUS CARBON; L-CYSTEINE; ELECTROCATALYSIS; HEMOGLOBIN; FILMS;

D O I：

10.1016/j.aca.2010.05.019

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A new ordered mesoporous carbon (OMC) composite modified electrode was fabricated for the first time. Binuclear cobalt phthalocyaninehexasulfonate sodium salt (bi-CoPc) can be adsorbed onto didodecyldimethylammonium bromide (DDAB)/OMC film by ion exchange. UV-vis spectroscopy, scanning electron microscopy (SEM) and electrochemical methods were used to characterize the composite film. The cyclic voltammograms demonstrate that the charge transfer of bi-CoPc is promoted by the presence of OMC. Further study indicated that bi-CoPc/DDAB/OMC film is the excellent electrocatalyst for the electrochemical reduction of oxygen in a neutral aqueous solution and hemoglobin (Hb) at lower concentrations. Additionally, as an amperometric 2-mercaptoethanol (2-ME) sensor, this modified electrode shows a wider linear range (2.5 x 10(-6) to 1.4 x 10(-4) M), high sensitivity (16.5 mu A mM(-1)) and low detection limit of 0.6 mu M (S/N = 3). All these confirm the fact that the new composite film may have wide potential applications in biofuel cells, biological and environmental sensors. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：88 / 94

页数：7

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