Publication Type:

Journal Article

Source:

Biosensors and Bioelectronics, Volume 50, p.472 - 477 (2013)

URL:

http://www.sciencedirect.com/science/article/pii/S0956566313004776

Keywords:

Non-enzymatic glucose sensor; Tantalum oxide; Honeycomb nano structures; Copper oxide

Abstract:

Abstract Tantalum oxide honeycomb nanostructures (THNS) were fabricated by electrochemical anodisation of tantalum in H2SO4–HF medium. \{XRD\} analysis showed that annealing of \{THNS\} at 400 °C improves the crystallinity. \{HRSEM\} and \{AFM\} results illustrated that nanopores with an average diameter of 30 nm were uniformly distributed and the pore size reduced to 24 nm and 18 nm during subsequent electrodeposition of Pt and CuO. Electrodeposited Pt and CuO exhibited face centered cubic (fcc) and monoclinic crystal structure respectively. Cyclic voltammetric studies revealed that, on the hybrid material electrooxidation of glucose occurs at a lower potential (0.45 V). The sensor exhibited linear response to glucose up to 31 mM, fast response time (<3 s) and a low detection limit of 1 μM (S/N=3). The sensor is free of interference from ascorbic acid, uric acid, dopamine and acetaminophen. Sensor was used to analyze glucose in blood serum samples.

Notes:

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Cite this Research Publication

P. V. Suneesh, Chandhini, K., Ramachandran, T., Nair, B. G., and Babu, T. G. Satheesh, “Tantalum oxide honeycomb architectures for the development of a non-enzymatic glucose sensor with wide detection range”, Biosensors and Bioelectronics, vol. 50, pp. 472 - 477, 2013.