Nickel sulfide-incorporated sulfur-doped graphitic carbon nitride nanohybrid interface for non-enzymatic electrochemical sensing of glucose. Issue 9 (18th August 2020)

• Record Type: Journal Article
• Authors: Vinoth, S.; Rajaitha, P. Mary; Venkadesh, A.; Shalini Devi, K. S.; Radhakrishnan, S.; Pandikumar, A.
• Is Part Of: Nanoscale advances. Volume 2:Issue 9(2020)
• Page Start: 4242
• Page End: 4250
• Publication Date: 2020-08-18
• Subjects: 620.5
• DOI: 10.1039/d0na00172d
• Languages: English
• ISSNs: 2516-0230

Abstract

Abstract : Nickel sulfide incorporated sulfur doped-graphitic carbon nitride nanohybrid modified electrode interface for non-enzymatic sensing of glucose in an alkaline medium. Abstract : A nickel sulfide-incorporated sulfur-doped graphitic carbon nitride (NiS/S-g-C3 N4 ) nanohybrid was utilized as an interface material for the non-enzymatic sensing of glucose in an alkaline medium (0.1 M NaOH). The precursors used in the preparation of NiS/S-g-C3 N4 hybrid were thiourea and nickel nitrate hexahydrate as the sulfur and nickel sources, respectively. The HRTEM results reveal that NiS nanoparticles incorporated on the S-g-C3 N4 nanosheet surface could enhance the electrocatalytic activity and electrical conductivity. The prepared NiS/S-g-C3 N4 crystalline nature, surface functionalities, graphitic nature, thermal stability and surface composition were investigated using XRD, FT-IR, Raman spectroscopy, TGA and XPS analyses. The NiS/S-g-C3 N4 modified electrode was used for the non-enzymatic sensing of glucose at an applied potential of 0.55 V vs. Ag/AgCl with a detection limit of 1.5 μM (S/N = 3), sensitivity of 80 μA mM −1 cm −2 and the response time of the fabricated sensor was close to 5 s. Different inorganic ions and organic substances did not interfere during glucose sensing. The NiS/S-g-C3 N4 nanohybrid material could be extended for a real sample analysis and open the way for diverse opportunities in the electrochemical sensing of glucose.