期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 232, 期 -, 页码 150-157出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2016.03.122
关键词
Nickel-titanium alloy; Non-enzymatic glucose sensor; Nickel hydroxide; Potential cycling
资金
- National Natural Science Foundation of China [31400815]
- Hong Kong Research Grants Council (RGC) General Research Funds (GRF) [CityU 112212, 11301215]
- City University of Hong Kong Applied Research Grant (ARG) [9667104]
A one-step potential cycling technique for in situ synthesis of electroactive Ni(OH)(2) and protective TiO2 composite film on NiTi alloy is described. The Ni(OH)(2)/TiO2 composite film can be used directly as the electrode in a non-enzymatic glucose sensor. This binder-free sensor boasts a high glucose sensitivity of 192 mu A mM(-1) cm(-2), short response time of less than 1 s, and detection limit of 8 mu M. In addition, the stable and protective TiO2 extends the linear range to 14 mM and provides excellent long-term stability. This novel fabrication method not only simplifies the preparation of high-performance non-enzymatic glucose sensing materials, but also can be readily extended to the fabrication of other transition metal-based biosensors. (C) 2016 Elsevier B.V. All rights reserved.
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