Functionalised zinc oxide nanotube arrays as electrochemical sensors for the selective determination of glucose
2011 (English)In: Micro & Nano Letters, ISSN 1750-0443, Vol. 6, no 8, 609-613 p.Article in journal (Refereed) Published
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.
Engineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-70754DOI: 10.1049/mnl.2011.0310ISI: 000294470400009OAI: oai:DiVA.org:liu-70754DiVA: diva2:441451