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
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)
Publication Title
ACS Sustainable Chemistry & Engineering
Volume
6
Issue
12
Publisher
American Chemical Society