Electrodeposited Nickel Cobalt Sulfide Flowerlike Architectures on Disposable Cellulose Filter Paper for Enzyme-Free Glucose Sensor Applications

Babu, Kaliyamoorthy Justice and Raj Kumar, T. and Yoo, Dong Jin and Phang, Siew Moi and Kumar, Georgepeter Gnana (2018) Electrodeposited Nickel Cobalt Sulfide Flowerlike Architectures on Disposable Cellulose Filter Paper for Enzyme-Free Glucose Sensor Applications. ACS Sustainable Chemistry & Engineering, 6 (12). pp. 16982-16989. ISSN 2168-0485

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Official URL: https://doi.org/10.1021/acssuschemeng.8b04340

Abstract

Three-dimensional flowerlike nickel cobalt sulfide (NiCo2S4) nanostructures are electrochemically deposited over the Ni-modified cellulose filter paper (CFP). The fabricated NiCo2S4/Ni/CFP is explored as a binder-free and self-standing electrode for enzyme-free electrochemical detection of glucose in alkaline media, in which Ni/CFP and NiCo2S4 serve as the current collector and active material, respectively. Owing to the rich redox active sites, synergistic effect between Co4+ and Ni3+, and rapid electron transportation tuned with the substitution of sulfur (S) with oxygen labile functional group, NiCo2S4/Ni/CFP exhibits considerable enzyme-free glucose-sensing performance with wide linear glucose concentration ranging from 0.5 μM to 6 mM, high sensitivity of 283 μA mM-1 cm-2, and low detection limit of 50 nM. The developed NiCo2S4/Ni/CFP's sensing performances are reproducible, stable, and highly selective toward the analyte of interest in physiological interfering species. Thus, the self-standing, binder-free, inexpensive, easily disposable, and facile electrode fabrication process proposed in this study opens a new paradigm architecture for the development of efficient electrochemical sensor devices with affordable cost.

Item Type: Article
Uncontrolled Keywords: Cellulose filter paper; Chloride tolerance; Electrodeposition; Self-standing electrode; Three-dimensional structure
Subjects: Q Science > Q Science (General)
Q Science > QD Chemistry
Q Science > QH Natural history
Divisions: Faculty of Science > Institute of Biological Sciences
Deputy Vice Chancellor (Research & Innovation) Office > Institute of Ocean and Earth Sciences
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 17 Sep 2019 07:25
Last Modified: 17 Sep 2019 07:25
URI: http://eprints.um.edu.my/id/eprint/22382

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