Electrodeposited Nickel Cobalt Sulfide Flowerlike Architectures on Disposable Cellulose Filter Paper for Enzyme-Free Glucose Sensor Applications
Document Type
Article
Publication Date
1-1-2018
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.
Keywords
Cellulose filter paper, Chloride tolerance, Electrodeposition, Self-standing electrode, Three-dimensional structure
Publication Title
ACS Sustainable Chemistry & Engineering
Divisions
InstituteofBiologicalSciences,ocean
Funders
University Grants Commission (UGC), New Delhi, India major Project Grant No. MRP-MAJOR-CHEM-2013-36681,Korea Institute of Energy Technology Evaluation and Planning (KETEP),Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea (No. 20184030202210),Medical Research Center Program (No. 2017R1A5A2015061) through the National Research Foundation (NRF), which is funded by the Korean government (MSIP)
Volume
6
Issue
12
Publisher
American Chemical Society