Bio-sensing property of gold coated ZnO nanorods

被引：15

作者：

Bhattacharya, A. ^{[1
]}

Rao, V. P. ^{[1
]}

Jain, C. ^{[1
]}

Ghose, A. ^{[1
]}

Banerjee, S. ^{[1
]}

机构：

[1] Saha Inst Nucl Phys, Surface Phys Div, Kolkata 700064, India

来源：

MATERIALS LETTERS | 2014年 / 117卷

关键词：

Electrode position; Nano-composite; Surfaces; Interlaces; Thin films; DIRECT ELECTROCHEMISTRY; BIOSENSORS; NANOPARTICLES; ARRAYS;

D O I：

10.1016/j.matlet.2013.11.102

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

this paper we bring forward our report on improved performance of gold coated ZnO nanorod (ZnO NR) over pristine ZnO NR based glucose bio-sensors. The ZnO NR was electrochemically deposited on indium tin oxide (ITO) substrate. Cyclic voltammetric study showed that there was an increase in the oxidation current when the gold layer was coated on the ZnO NR. Further, amperometric comparison showed that the gold coated ZnO NR has a wider linear detection range than pristine ZnO NR based sensor. We have studied the optimum performance of the sensor as a function of temperature and pH. We have also compared the charge transfer properties using electrochemical impedance spectroscopy (EIS). The EIS data shows that the electron transfer rate for gold coated ZnO NR is better than pristine ZnO NR. Therefore, better electron transfer rate results in better biosensing property of gold coated ZnO NR. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：128 / 130

页数：3

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