Institute of Nano Electronic Engineering

Universiti Malaysia Perlis

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Archives for September 2014

Functionalised zinc oxide nanotube arrays as electrochemical sensors for the selective determination of glucose

September 9, 2014 By Editor

Abstract – In the present study, highly oriented single-crystal zinc oxide nanotube (ZnO-NT) arrays were prepared by a trimming of ZnO nanorods along the c-axis on the gold-coated glass substrate having a diameter of 100–200nm and a length of ~1µm using a low-temperature aqueous chemical growth process. The prepared (ZnO-NT) arrays were further used as electrochemical enzyme-based glucose sensors through immobilisation of glucose oxidase by the physical adsorption method in conjunction with a Nafion coating. The electrochemical response of the sensor was found to be linear over a relatively wide logarithmic concentration range from 0.5×10-6 to 12×10-3 M. The proposed sensor showed a high sensitivity of 69.12 mV/decade with R=0.9934 for sensing of glucose. A fast-response time less than 4s with good selectivity, reproducibility and negligible response to common interferents such as ascorbic acid and uric acid prevailed.

Keywords – zinc oxide nanotube, chemical, glucose

Corresponding Author: Uda Hashim
Corresponding Author’s Email: uda@unimap.edu.my

Full text: PDF

Filed Under: Publications Tagged With: chemical, glucose, zinc oxide nanotube

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Institute of Nano Electronic Engineering, Universiti Malaysia Perlis
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