Chemical Research in Chinese Universities ›› 2013, Vol. 29 ›› Issue (5): 861-867.doi: 10.1007/s40242-013-3103-x

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Dopant-stimulated CuO Nanofibers for Electro-oxidation and Determination of Glucose

SHI Hong-yan1, WU Ying1, WANG Wen1, SONG Wen-bo1, LIU Tie-mei2   

  1. 1. College of Chemistry, Jilin University, Changchun 130012, P. R. China;
    2. China-Japan Union Hospital of Jilin University, Changchun 130033, P. R. China
  • Received:2013-03-11 Revised:2013-05-21 Online:2013-10-01 Published:2013-09-17
  • Contact: SONG Wen-bo, LIU Tie-mei E-mail:wbsong@jlu.edu.cn;liutiemei777@163.com
  • Supported by:

    Supported by the National Natural Science Foundation of China(Nos. 21075048, 20543003).

Abstract:

We described the preparation of copper oxide composite nanofibers doped with carbon nanotubes (CuO/C-NFs) or nickel oxide(CuO/NiO-NFs) by electrospinning for direct glucose determination. The interest in exploring practical CuO/C-NFs and CuO/NiO-NFs electrode materials for sensor application was fascinated by the possibility of promoting electron transfer for kinetically unfavorable glucose oxidation reactions at a lower overpotential and thus improving the selectivity of the electrode for glucose in electroanalysis. The morphologies of CuO/C-NFs and CuO/NiO-NFs were characterized by scanning electron microscopy(SEM) and X-ray powder diffraction(XRD). The electrocatalytic performances of glucose were evaluated in detail by cyclic voltammetry(CV) and chronoamperometry. Facile charge transport, enhanced current response(at a lower overpotential of +0.35 V), improved stability and selectivity, as well as excellent resistance towards electrode fouling were observed at CuO/ C-NFs electrode in direct glucose electroanalysis. These merits are attributed to the highly porous three-dimensional network film structure of CuO/C-NFs electrode materials and the potential synergic catalytic effect of CuO and carbon nanotubes in composite nanofibers. This study may provide a new insight into metal oxide-based composite nanofibers obtained via electrospinning for fabricating novel and high performance sensors and devices.

Key words: Copper oxide nanofiber, Carbon nanotube, Nickel oxide, Electrospinning, Glucose oxidation