TiO2-CuCNFs based laccase biosensor for enhanced electrocatalysis in hydroquinone detection

被引：42

作者：

Yang, Jie ^{[1
]}

Li, Dawei ^{[1
]}

Fu, Jiapeng ^{[1
]}

Huang, Fenglin ^{[1
]}

Wei, Qufu ^{[1
]}

机构：

[1] Jiangnan Univ, Key Lab Ecotext, Minist Educ, Wuxi 214122, Jiangsu, Peoples R China

来源：

JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 2016年 / 766卷

基金：

中国国家自然科学基金;

关键词：

Electrospinning; TiO2; Carbon nanofiber; Laccase; Biosensor; Hydroquinone detection; CARBON-PASTE ELECTRODE; SWEET-POTATO TISSUE; ELECTROCHEMICAL BIOSENSOR; IMPEDIMETRIC BIOSENSOR; COMPOSITE NANOFIBERS; SENSITIVE DETECTION; CRUDE EXTRACT; CATECHOL; GRAPHENE; SURFACE;

D O I：

10.1016/j.jelechem.2016.01.030

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A novel biosensor was prepared on the basis of laccase, Nafion and TiO2 loaded copper and carbon composite nanofibers (TiO2/CuCNFs) obtained through electrospinning, carbonization and solvothermal treatment. The introduction of TiO2 apparently improved the electrocatalysis of the biosensor for the detection of hydroquinone. In addition, cyclic voltammetry analysis of the biosensor showed a pair of well-defined redox peaks, and revealed that the electrochemical behavior of laccase was a surface-controlled process. Chronoamperometry technique was also employed to investigate the biosensor. The results displayed a linear range from 1 mu M to 89.8 mu M, detection limit of 3.65 mu M (S/N = 3), a sensitivity of 24.6 mu A/mM, a high selectivity, as well as good repeatability and stability. The biosensor showed great promise in hydroquinone monitoring. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：16 / 23

页数：8

共 54 条

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