Zinc oxide inverse opal electrodes modified by glucose oxidase for electrochemical and photoelectrochemical biosensor

被引：72

作者：

Xia, Lei ^{[1
]}

Song, Jian ^{[1
]}

Xu, Ru ^{[1
]}

Liu, Dali ^{[1
]}

Dong, Biao ^{[1
]}

Xu, Lin ^{[1
]}

Song, Hongwei ^{[1
]}

机构：

[1] Jilin Univ, Coll Elect Sci & Engn, State Key Lab Integrated Optoelect, Changchun 130012, Peoples R China

来源：

BIOSENSORS & BIOELECTRONICS | 2014年 / 59卷

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

ZnO inverse opal photonic crystals; ZnO IOPCs modified FTO electrode; Glucose oxidase; Electrochemical biosensor; Photoelectrochemical biosensor; AMPLIFIED PHOTOCHEMISTRY; AMPEROMETRIC BIOSENSOR; ZNO NANORODS; IMMOBILIZATION; SENSOR; FABRICATION; LIGHT;

D O I：

10.1016/j.bios.2014.03.038

中图分类号：

Q6 [生物物理学];

学科分类号：

071011 ;

摘要：

The ZnO inverse opal photonic crystals (IOPCs) were synthesized by the sol-gel method using the polymethylmethacrylate (PMMA) as a template. For glucose detection, glucose oxidase (GOD) was further immobilized on the inwall and surface of the IOPCs. The biosensing properties toward glucose of the Nafion/GOD/ZnO IOPCs modified FTO electrodes were carefully studied and the results indicated that the sensitivity of ZnO IOPCs modified electrode was 18 times than reference electrode due to the large surface area and uniform porous structure of ZnO IOPCs. Moreover, photoelectrochemical detection for glucose using the electrode was realized and the sensitivity approached to 52.4 mu A mM(-1) cm(-2), which was about four times to electrochemical detection (14.1 mu A mM-1 cm-2). It indicated that photoelectrochemical detection can highly improve the sensor performance than conventional electrochemical method. It also exhibited an excellent anti-interference property and a good stability at the same time. This work provides a promising approach for realizing excellent photoelectrochemical biosensor of similar semiconductor photoelectric material. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：350 / 357

页数：8

共 43 条

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