期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 155, 期 2, 页码 592-597出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2011.01.015
关键词
Glucose sensor; Pd-Ni/SiNW electrode; Electroless co-plating; Cyclic voltammetry; Amperometry
资金
- National Natural Science Foundation of China [60672002, 61076070]
- Shanghai Municipal Education Commission [09ZZ46]
An amperometric glucose sensor based on Pd-Ni/SiNW electrode has been investigated. The silicon nanowire (SiNW) electrodes were first fabricated by chemical etching, and then nickel and palladium particles were deposited onto the surfaces of SiNWs via electroless co-plating technique followed by annealing in nitrogen atmosphere at 350 degrees C for 300 s. The morphology of Pd-Ni/SiNW electrode was characterized by scanning electron microscope (SEM) and X-ray diffraction (XRD). The sensor performance was characterized by cyclic voltammetry (CV) and fixed potential amperometry techniques. In 0.1 M KOH alkaline medium with different glucose concentrations, the sensor shows an excellent sensitivity of 190.72 mu A mM(-1) cm(-2) with the detection limit (S/N ratio = 3) of 2.88 mu M. And it also exhibits superior anti-interference properties to the species including ascorbic acid (AA), uric acid (UA) and 4-acetamidophenol (AP). All results demonstrate that this Pd-Ni/SiNW electrode is a candidate with great potential for glucose detection. (C) 2011 Elsevier B.V. All rights reserved.
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