Hierarchically porous NiCo2S4 nanowires anchored on flexible electrospun graphitic nanofiber for high-performance glucose biosensing

Nickel cobalt sulfide (NiCo2S4) nanomaterials has attracted much attention in various fields due to its highly catalytic property and low cost. Herein, NiCo2S4 nanowire arrays grown on electrospun graphitic nanofiber film (NiCo2S4/EGF) is prepared for nonenzymatic glucose sensor. A three-dimensional...

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Bibliographic Details
Published in:Journal of alloys and compounds 2020-04, Vol.819, p.153376, Article 153376
Main Authors: Guo, Qiaohui, Wu, Tingting, Liu, Lijuan, He, Yi, Liu, Dong, You, Tianyan
Format: Article
Language:English
Subjects:
Arrays
Cobalt sulfide
Core-shell structure
Displays
Electrical resistivity
Electrospinning
Electrospun graphitic nanofiber
Glucose
Glucose determination
Low cost
Nanofibers
Nanomaterials
Nanowires
NiCo2S4 nanowire arrays
Reaction kinetics
Selectivity
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Summary:Nickel cobalt sulfide (NiCo2S4) nanomaterials has attracted much attention in various fields due to its highly catalytic property and low cost. Herein, NiCo2S4 nanowire arrays grown on electrospun graphitic nanofiber film (NiCo2S4/EGF) is prepared for nonenzymatic glucose sensor. A three-dimensional, self-supporting and porous NiCo2S4/EGF is synthesized through a two-step hydrothermal process. By rationally controlling the growth kinetics, NiCo2S4 arrays exhibit a unique core-shell structure with rough surface, providing abundant electrochemically active sites exposed to the electrolyte. When applied to glucose determination, NiCo2S4/EGF modified electrode displays a wide linear range (0.0005–3.571 mM, R2 = 0.995) and low detection limit (0.167 μM, S/N = 3). The excellent sensing properties of NiCo2S4/EGF may be attributed to the high electrocatalytic activity of NiCo2S4 and the good electrical conductivity of EGF frameworks. In addition, the as-proposed sensor also displays other outstanding advantages, including simple preparation, low cost, perfect reproducibility and good selectivity. The results suggest that NiCo2S4/EGF may show great promising in practical applications for glucose detection. •NiCo2S4 nanowire arrays anchored on electrospun graphitic nanofiber film (NiCo2S4/EGF) was prepared.•NiCo2S4 arrays with a core-shell structure and rough surface provides abundant active sites exposed to the electrolyte.•The NiCo2S4/EGF-based electrochemical sensor showed attracting analytical properties toward glucose detection.
ISSN:0925-8388
1873-4669
DOI:10.1016/j.jallcom.2019.153376