Non-enzymatic glucose sensor composed of carbon-coated nano-zinc oxide

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Abstract

Nowadays glucose detection is of great importance in the fields of biological, environmental, and clinical analyzes. In this research, we report a zinc oxide (ZnO) nanorod powder surface-coated with carbon material for non-enzymatic glucose sensor applications through a hydrothermal process and chemical vapor deposition method. A series of tests, including crystallinity analysis, microstructure observation, and electrochemical property investigations were carried out. For the cyclic voltammetric (CV) glucose detection, the low detection limit of 1 mM with a linear range from 0.1 mM to 10 mM was attained. The sensitivity was 2.97 µA/cm2mM, which is the most optimized ever reported. With such good analytical performance from a simple process, it is believed that the nanocomposites composed of ZnO nanorod powder surface-coated with carbon material are promising for the development of cost-effective non-enzymatic electrochemical glucose biosensors with high sensitivity.

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Chung, R. J., Wang, A. N., Liao, Q. L., & Chuang, K. Y. (2017). Non-enzymatic glucose sensor composed of carbon-coated nano-zinc oxide. Nanomaterials, 7(2). https://doi.org/10.3390/nano7020036

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