Improvement of sensitive CuO NFs–ITO nonenzymatic glucose sensor based on in situ electrospun fiber
作者： Guangyue Liu , Baozhan Zheng , Yanshu Jiang , Yuqing Cai , Juan Du
DOI: 10.1016/J.TALANTA.2012.08.040
关键词: Chronoamperometry 、 Nanofiber 、 Chemistry 、 Calcination 、 Electrospinning 、 Dielectric spectroscopy 、 Electrode 、 Chemical engineering 、 Analytical chemistry 、 Indium tin oxide 、 Cyclic voltammetry
摘要: Abstract CuO nanofibers (NFs), prepared by electrospinning and calcination technologies, have been applied for the fabrication of glucose sensors with high sensitivity selectivity. Cu(NO 3 ) 2 polyvinylpyrrolidone (PVP) composite were initially electrospun on surface indium tin oxide (ITO) glass, then NFs–ITO electrode was formed simply removing PVP through heat treatment. The structures morphologies characterized X-ray diffraction, scanning electron microscopy thermogravimetric analysis. direct electrocatalytic oxidation in alkaline medium at has also investigated detail cyclic voltammetry, chronoamperometry electrochemical impedance spectroscopy. effects NaOH concentration, time, :PVP mass ratios temperature response to investigated. Under optimized experimental conditions, produced reproducible 873 μA mM −1 cm −2 . Linear responses obtained over a concentration range from 0.20 μM 1.3 mM detection limit 40 nM ( S/N =3). good selectivity, stability fast amperometic sensing glucose, thus it can be used future development non-enzymatic sensors.
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