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Functionalised zinc oxide nanotube arrays as electrochemical sensors for the selective determination of glucose
Linköping University, Department of Science and Technology, Physics and Electronics. Linköping University, The Institute of Technology. (Solid-state electronics)
Nano Biochip Research Group, Institute of Nano Electronic Engineering (INEE), University Malaysia Perlis (UniMAP), Perlis, Malaysia.
Linköping University, Department of Science and Technology. Linköping University, The Institute of Technology.
Linköping University, Department of Science and Technology. Linköping University, The Institute of Technology.
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2011 (English)In: Micro & Nano Letters, ISSN 1750-0443, E-ISSN 1750-0443, Vol. 6, no 8, 609-613 p.Article in journal (Refereed) Published
Abstract [en]

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 100-200 nm and a length of similar to 1 mu m 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 x 10(-6) to 12 x 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 4 s with good selectivity, reproducibility and negligible response to common interferents such as ascorbic acid and uric acid prevailed.

Place, publisher, year, edition, pages
Institution of Engineering and Technology (IET) , 2011. Vol. 6, no 8, 609-613 p.
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Engineering and Technology
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URN: urn:nbn:se:liu:diva-70754DOI: 10.1049/mnl.2011.0310ISI: 000294470400009OAI: oai:DiVA.org:liu-70754DiVA: diva2:441451
Available from: 2011-09-16 Created: 2011-09-16 Last updated: 2017-12-08

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Usman Ali, Syed M.Hussain Ibupoto, ZafarWillander, Magnus

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