Journal
ELECTROCHIMICA ACTA
Volume 136, Issue -, Pages 41-46Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2014.05.070
Keywords
MoS2 nanosheet; Ni nanoparticle; glucose; non-enzymatic sensor
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Funding
- Projects in Gansu Province Science and Technology Pillar Program [1204GKCA047]
- Fundamental Research Funds for the Central Universities [Izujbky-2013-67, lzujbky-2012-68]
- National Natural Science Foundation of China [21301082]
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A novel Ni nanoparticle-MoS2 nanosheet hybrid was prepared by chemically reducing Ni nanoparticles on MoS2 nanosheet for the non-enzymatic detection of glucose. The morphology and structure of the Ni-MoS2 hybrid were investigated by transmission electron microscopy (TEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The results indicated that Ni nanoparticles with an average diameter of 6 nm were successfully deposited on MoS2 nanosheet. Electrocatalytic activity of the as-prepared nanomaterials towards glucose oxidation was investigated by cyclic voltammetry and amperometric measurement in alkaline media. An excellent sensitivity value of 1824 mu A mM(-1) cm(-2) with a wide linear range (up to 4 mM) and low detection limit of 0.31 mu M were gained by Ni-MoS2 hybrid fabricated sensor. The superior catalytic activity and low expense make Ni-MoS2 hybrid very promising for applications in direct sensing of glucose. (C) 2014 Elsevier Ltd. All rights reserved.
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