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Ultrasensitive and selective non-enzymatic electrochemical glucose sensor based on hybrid material of graphene nanosheets/graphene nanoribbons/nickel nanoparticle

Jothi, L. and Jayakumar, N. and Jaganathan, S. K. and Nageswaran, G. (2018) Ultrasensitive and selective non-enzymatic electrochemical glucose sensor based on hybrid material of graphene nanosheets/graphene nanoribbons/nickel nanoparticle. Materials Research Bulletin, 98 . pp. 300-307. ISSN 0025-5408

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Official URL: http://dx.doi.org/10.1016/j.materresbull.2017.10.0...

Abstract

A fast, highly sensitive and selective non-enzymatic electrochemical glucose sensor based on graphene sheet/graphene nanoribbon/nickel nanoparticles (GS/GNR/Ni) hybrid material modified electrode was fabricated. The hybrid material was synthesized via facile in-situ chemical reduction and characterized by X-ray diffraction, transmission electron microscopy, Raman spectroscopy, cyclic voltammetry and electrochemical impedance spectroscopy. The GS/GNR/Ni/GCE showed high electrochemical activity towards the oxidation of glucose in a 0.1 M NaOH solution. At an applied potential of +0.5 V, it displayed wide linear amperometric response towards glucose from the range of 5 nM–5 mM, with a detection limit of 2.5 nM and sensitivity of 2.3 mA/mM cm 2 . Moreover, the modified electrode was relatively insensitive to commonly interfering species such as dopamine, ascorbic acid, sucrose, uric acid and Cl - ions. The fabricated sensor with better reproducibility, good long term stability, makes it a promising electrode for the development of effective glucose sensor.

Item Type:Article
Uncontrolled Keywords:amperometric, graphene nanoribbon, graphene sheet
Subjects:Q Science > Q Science (General)
Divisions:Biosciences and Medical Engineering
ID Code:83968
Deposited By: Narimah Nawil
Deposited On:31 Oct 2019 18:10
Last Modified:05 Nov 2019 12:36

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