A Glassy Carbon Electrode Modified with Molybdenite and Ag Nanoparticle Composite for Selectively Sensing of Ascorbic Acid

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  • ZHAO Rui
    School of Chemical Engineering, University of Science and Technology LiaoNing
  • WANG Yue
    School of Chemical Engineering, University of Science and Technology LiaoNing
  • ZHANG Zhiqiang
    School of Chemical Engineering, University of Science and Technology LiaoNing
  • HASEBE Yasushi
    Department of Life Science and Green Chemistry, Faculty of Engineering, Saitama Institute of Technology
  • TAO Dongping
    School of Mineral Engineering, University of Science and Technology LiaoNing

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<p>Molybdenite (MLN) was physically co-adsorbed with Ag nanoparticles (Ag) on a glassy carbon electrode (GCE) for selectively sensing of ascorbic acid (AA). The composite was characterized with a scan electron microscope, a high-temperature confocal laser scanning microscope, an X-ray diffractometer, an X-ray fluorescence analyzer and electrochemical methods. The prepared MLN/Ag-GCE sensor exhibited good properties including a linear range from 3.0 × 10−5 to 1.0 × 10−3 M toward AA, a low detection limit of 1.5 × 10−5 M, good selectivity, excellent reproducibility, and good stability. The synergistic effect between MLN and Ag nanoparticles results in an enhancement of the electrocatalytic activity for molybdenite.</p>

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  • Analytical Sciences

    Analytical Sciences 35 (7), 733-738, 2019-07-10

    社団法人 日本分析化学会

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