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

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    Functionalised zinc oxide nanotube arrays as electrochemical sensors for the selective determination of glucose.pdf (36.86Kb)
    Date
    2011-08
    Author
    Syed Muhammad Usman, Ali
    Mohammad, Kasfhi
    Zafar Hussain, Ibupoto
    Muhammad, Fakhar-e-Alam
    Uda, Hashim, Prof. Dr.
    Magnus, Willander
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    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.
    URI
    http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=6012997&tag=1
    http://dspace.unimap.edu.my/123456789/18644
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    • Institute of Nano Electronic Engineering (INEE) (Articles) [206]
    • Uda Hashim, Prof. Ts. Dr. [243]

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