Electrochemical studies of novel chitosan/TiO2 bioactive electrode for biosensing application

被引：54

作者：

Khan, Raju ^{[2
]}

Dhayal, Marshal ^{[1
]}

机构：

[1] Natl Phys Lab, Engn Mat Div, Liquid Crystal & Self Assembled Monolayer Sect, New Delhi 110012, India

[2] Natl Phys Lab, Engn Mat Div, Biomol Elect & Conducting Polymer Res Grp, New Delhi 110012, India

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2008年 / 10卷 / 02期

关键词：

TiO2; chitosan; HRP; bioactive electrode;

D O I：

10.1016/j.elecom.2007.12.001

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Bioactive electrode of uniformly dispersed TiO2 in Chitoan (CS) was fabricated on ITO substrate for immobilization of horseradish peroxidase (HRP). Enhanced surface porosity and decrease in relative proportion of carbonyl functionality of CS in CS/TiO2 matrix was observed. Current voltage characteristic of CS/TiO2 matrix was enhanced by a factor of four possibly due to covalent and hydrogen binding of Ti atoms with hydroxyl and amino groups of CS. The immobilization of HRP on CS/TiO2 had increased resistance for charge transfer. This is possibly due to strongly binding of HRP with CS/TiO2 matrix and controlling transport of the ions of the supporting electrolyte. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：263 / 267

页数：5

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