Mesoporous Nickel Oxide (NiO) Nanopetals for Ultrasensitive Glucose Sensing

• Published in: Nanoscale research letters Vol. 13; no. 1; pp. 16 - 7
• Main Authors: Mishra, Suryakant, Yogi, Priyanka, Sagdeo, P. R., Kumar, Rajesh
• Format: Journal Article
• Language: English
• Published: New York Springer US 11-01-2018; SpringerOpen
• Subjects: Chemistry and Materials Science; Electrochemical Sensing; Glucose; Materials Science; Molecular Medicine; Nano Express; Nanochemistry; Nanoscale Science and Technology; Nanotechnology; Nanotechnology and Microengineering; NiO nanopetals; Electrochemical Sensing; NiO nanopetals; Glucose
• ISSN: 1931-7573; 1556-276X
• DOI: 10.1186/s11671-018-2435-3

Glucose sensing properties of mesoporous well-aligned, dense nickel oxide (NiO) nanostructures (NSs) in nanopetals (NPs) shape grown hydrothermally on the FTO-coated glass substrate has been demonstrated. The structural study based investigations of NiO-NPs has been carried out by X-ray diffraction (XRD), electron and atomic force microscopies, energy dispersive X-ray (EDX), and X-ray photospectroscopy (XPS). Brunauer–Emmett–Teller (BET) measurements, employed for surface analysis, suggest NiO’s suitability for surface activity based glucose sensing applications. The glucose sensor, which immobilized glucose on NiO-NPs@FTO electrode, shows detection of wide range of glucose concentrations with good linearity and high sensitivity of 3.9 μA/μM/cm
2
at 0.5 V operating potential. Detection limit of as low as 1 μΜ and a fast response time of less than 1 s was observed. The glucose sensor electrode possesses good anti-interference ability, stability, repeatability & reproducibility and shows inert behavior toward ascorbic acid (AA), uric acid (UA) and dopamine acid (DA) making it a perfect non-enzymatic glucose sensor.