Electrochemical hydrogen peroxide sensor based on a glassy carbon electrode modified with nanosheets of copper-doped copper(II) oxide
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  • 作者:Haiyan Song ; Chaohong Ma ; Liyan You ; Zhenyu Cheng ; Xinhui Zhang…
  • 关键词:Nanosheets ; Copper doped copper oxide ; Hydrogen peroxide ; Electrocatalysis
  • 刊名:Microchimica Acta
  • 出版年:2015
  • 出版时间:June 2015
  • 年:2015
  • 卷:182
  • 期:7-8
  • 页码:1543-1549
  • 全文大小:1,080 KB
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  • 作者单位:Haiyan Song (1) (4)
    Chaohong Ma (2)
    Liyan You (2)
    Zhenyu Cheng (3)
    Xinhui Zhang (1)
    Baishuang Yin (1)
    Yongnian Ni (4)
    Keqin Zhang (1)

    1. Laboratory of Test Center, Jilin Agricultural Science and Technology College, Jilin, 132101, China
    4. State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, China
    2. School of Arts and Science, Jilin Agricultural Science and Technology College, Jilin, 132101, China
    3. College of Chemical and Pharmaceutical Engineering, Jilin Institute of Chemical Technology, Jilin, 132022, China
  • 刊物类别:Chemistry and Materials Science
  • 刊物主题:Chemistry
    Analytical Chemistry
    Inorganic Chemistry
    Physical Chemistry
    Characterization and Evaluation Materials
    Monitoring, Environmental Analysis and Environmental Ecotoxicology
  • 出版者:Springer Wien
  • ISSN:1436-5073
文摘
A new electrochemical sensor for H2O2 was constructed by depositing copper doped CuO?nanosheets on a glassy carbon electrode (GCE). The morphology and composition of the modified electrode were characterized via scanning electron microscopy, energy dispersive X-ray spectroscopy and X-ray diffraction. The electrochemical properties of the electrode were studied using cyclic voltammetry and electrochemical impedance spectroscopy. The catalytic performance of the sensor was studied in 100?mM NaOH solution via differential pulse voltammetry and revealed the sensor to display significantly improved electrocatalytic activity with respect to the analysis of the H2O2 in comparison to a plain GCE or a GCE modified with copper only. The response to H2O2 at a working voltage of ?.46?V (vs. Ag/AgCl) is linear in the 0.003?–??mM concentration range, and the detection limit is 0.21?mM (at an S/N ratio of 3). Satisfactory results were obtained in the analysis of tap, rain and river waters spiked with H2O2. The analytical performance of this electrode compares favorably to the results obtained with other commonly used techniques for analysis of H2O2.

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