Improving electrochemical properties of liquid phase deposited TiO2 thin films by doping sodium dodecylsulfonate and its application as bioelectrocatalytic sensor for hydrogen peroxide

被引：36

作者：

Jiang, Guodong ^{[1
]}

Tang, Heqing ^{[1
]}

Zhu, Lihua ^{[1
]}

Zhang, Jingdong ^{[1
]}

Lu, Bin ^{[2
]}

机构：

[1] Huazhong Univ Sci & Technol, Coll Chem & Chem Engn, Wuhan 430074, Peoples R China

[2] Huazhong Univ Sci & Technol, Tongji Med Coll,MOE Key Lab Environm & Hlth, Sch Publ Hlth, Inst Environm Med, Wuhan 430030, Peoples R China

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2009年 / 138卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Liquid-phase deposition; Sodium dodecylsulfonate; Hemoglobin; Electrocatalysis; DIRECT ELECTRON-TRANSFER; CARBON ELECTRODE; LPD METHOD; HEMOGLOBIN; ELECTROCATALYSIS; BIOSENSOR; CONDUCTIVITY; OXIDATION; BEHAVIOR; GLUCOSE;

D O I：

10.1016/j.snb.2009.03.019

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Electroactive TiO2 films were prepared by liquid-phase deposition (LPD) in the presence of sodium dode-cylsulfonate. The doping of dodecylsulfonate (DS) converted the TiO2 film from a Structure Of globular nanoparticles to a Structure of nano-flakes, which directly influenced the electrochemical behavior of the film. The DS-doped TiO2 film yields ail enhanced reduction peak in the cyclic voltammograms. being attributed to the reduction of hydroxylated titanium(IV) species. The varied surface Structure of the DS-doped TiO2 film provided a biocompatible platform for immobilizing hemoglobin (Hb), and the Hb-immobilized film electrode exhibited good electrocatalytic activity to the reduction of H2O2. As a sensor for the determination of H2O2, the Hb-immobilized film electrode yielded ail excellently linear range from 0.003 to 1.5 mM H2O2 in the correlation between reduction peak current and H2O2 concentration, with a low detection limit of 1.0 mu M. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：607 / 612

页数：6

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