Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 819, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2019.153376
Keywords
NiCO2S4 nanowire arrays; Electrospun graphitic nanofiber; Core-shell structure; Glucose determination
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Funding
- National Natural Science Foundation of China [21864014, 21675065, 61901193]
- China Postdoctoral Science Foundation [2017M611703]
- Foundation of Jiangxi Educational Committee [GJJ170169]
- Natural Science Foundation of Jiangsu Province [BK20160490]
- Priority Academic Program Development of Jiangsu Higher Education Institutions
- Innovation/Entrepreneurship Program of Jiangsu Province
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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, R-2 = 0.995) and low detection limit (0.167 mu M, S/N = 3). The excellent sensing properties of NiCo2S4/EGF may be attributed to the high electrocatalytic activity of NiCO(2)S(4 )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. (C) 2019 Elsevier B.V. All rights reserved.
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