Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 786, Issue -, Pages 530-536Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2019.01.360
Keywords
Ni-B alloy; Amorphous; Nanoparticles; Intergrated electrode; Enzyme-free glucose sensor
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Funding
- National Natural Science Foundation of China [21601022]
- Foundation and Cutting-edge Research Plan of Chongqing [cstc2018jcyjAX0698]
- Livelihoods Science and Technology Innovation Project of Chongqing [cstc2016shmszx20004]
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It is very attractive to construct 3D integrated enzyme-free electrodes for sensitive and selective glucose sensing. In this paper, a novel 3D integrated electrode based on amorphous Ni-B nanoparticle grown on Ni foams (Ni-B/NF) was presented and used for enzyme-free glucose detection. Ni-B/NF was prepared via a simply and rapid electroless deposition with dipping Ni foams into NiCl2 precursors and NaBH4 reducing solutions alternatively. Electrochemical measurements demonstrate that Ni-B/NF has excellent catalytic activity for glucose oxidation and can be used as an efficient enzyme-free electrochemical sensor, with a short response time less than 10 s, a wide detection range from 5 mu M to 2.66 mM, a response sensitivity of 8.25 mA mM(-1) cm(-2), and a low detection limit of 5 mu M (S/N = 3). Moreover, the selectivity and reliability for practical application in blood glucose detection of the as-fabricated sensor were also investigated in detail. (C) 2019 Elsevier B.V. All rights reserved.
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