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A simple nonenzymatic glucose sensor based on coconut shell charcoal powder-coated nickel foil electrode

  • Carbon Letters
  • Abbr : Carbon Lett.
  • 2021, 31(4), pp.729-735
  • DOI : 10.1007/s42823-020-00202-5
  • Publisher : Korean Carbon Society
  • Research Area : Natural Science > Natural Science General > Other Natural Sciences General
  • Received : February 5, 2020
  • Accepted : October 27, 2020
  • Published : August 1, 2021

Edakkaparamban Shuaib 1 Parasseri Muhammed Shafi 1 Yogesh Gaurav Kumar 1 Arumugam Chandra Bose 1 Dillibabu Sastikumar 1

1National Institute of Technology

Accredited

ABSTRACT

In this work, a simple nonenzymatic glucose sensor has been proposed based on coconut shell charcoal (CSC) modifed nickel foil as working electrode in a three-electrode electrochemical cell. Charcoal was prepared by the pyrolysis of coconut shells. The most important advantages of coconut shells are cost-efectiveness and their abundance in nature. The morphology and phase of the CSC powder were characterized by scanning electron microscopy and X-ray difraction. The electrochemical performance of the CSC powder coated Nickel foil electrode was investigated by cyclic voltammetry and chronoamperometry. The sensor shows a higher sensitivity of 2.992 mA cm−2 mM−1 in the linear range of 0.5–5.5 mM and slightly lower sensitivity of 1.1526 mA cm−2 mM−1 in the range of 7–18.5 mM glucose concentration with a detection limit of 0.2 mM. The anti-interference property of CSC powder also was investigated and found that the response of interfering species was less signifcant compared to glucose response. The proposed sensor ofers good sensitivity, wide linear range, and a very low response to interfering biomolecules.

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