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Title: Functionalised zinc oxide nanotube arrays as electrochemical sensors for the selective determination of glucose
Authors: Syed Muhammad Usman, Ali
Mohammad, Kasfhi
Zafar Hussain, Ibupoto
Muhammad, Fakhar-e-Alam
Uda, Hashim, Prof. Dr.
Magnus, Willander
Keywords: Aqueous chemical growth;Ascorbic acids;Concentration ranges;lectrochemical response;Glass substrates;Gold-coated;High sensitivity;Immobilisation;Interferents;Low temperatures;Nafion coating;Nanotube arrays;Physical adsorption method;Reproducibilities;Selective determination;Uric acids;ZnO nanorod
Issue Date: Aug-2011
Publisher: The Institution of Engineering and Technology
Citation: Micro and Nano Letters, vol. 6 (8), 2011, pages 609-613
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 ∼1m 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 -3M. The proposed sensor showed a high sensitivity of 69.12mV/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.
Description: Link to publisher's homepage at http://www.theiet.org/
URI: http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=6012997&tag=1
ISSN: 1750-0443
Appears in Collections:Institute of Nano Electronic Engineering (INEE) (Articles)
Uda Hashim, Prof. Dr.

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