A Novel Non-Enzymatic Glucose Sensor Based on Nickel (II) Oxide Electrospun Nanofibers
Authors: Wang, Wei; Li, Zhenyu; Zheng, Wei; Dong, Bo; Li, Shangyu; Wang, Ce
Source: Journal of Nanoscience and Nanotechnology, Volume 10, Number 11, November 2010 , pp. 7537-7540(4)
Publisher: American Scientific Publishers
Abstract:A new enzymeless glucose sensor has been fabricated via electrospinning technology and subsequent calcination. The morphology and structure of the as-prepared nanofibers have been characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray diffraction (XRD). The electrocatalytic oxidation of glucose in alkaline medium at nickel oxide modified glassy carbon electrodes has been investigated. The modified electrodes offer excellent electrocatalytic activity toward the glucose oxidation at low positive potential (0.3 V). Glucose has been determined chronoamperometrically at the surface of NiO nanofibers modified electrode in 0.5 mM NaOH. Under the optimized condition, the calibration curve is linear in the concentration range of 2 × 10−3 mM∼1 mM, and 1 mM∼9.5 mM. The detection limit (signal-to-noise 3) and response time are 3.394 × 10−6 M and 2 s, respectively. The NiO electrospun nanofibers is easy to prepare and feasible in economy. The modified electrode is steady and can be used repeatedly, so it is reasonable to expect its broad use in non-enzymatic glucose sensor.
Document Type: Research article
Publication date: 2010-11-01
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