Molten-salt-composite of Pyrite and Silver Nanoparticle as Electrocatalyst for Hydrogen Peroxide Sensing

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  • ZHAO Jifan
    School of Chemical Engineering, University of Science and Technology Liaoning
  • WANG Yue
    School of Chemical Engineering, University of Science and Technology Liaoning
  • WANG Ting
    The North United Cable Network. Inc Anshan Branch
  • HASEBE Yasushi
    Department of Life Science and Green Chemistry, Faculty of Engineering, Saitama Institute of Technology
  • ZHANG Zhiqiang
    School of Chemical Engineering, University of Science and Technology Liaoning

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Abstract

<p>A conductive molten salt was synthesized by using natural pyrite (PR) and silver nanoparticles (Ag) at 450°C using a molten salt method. The molten-salt-composite (PR/Ag) was used as an electrocatalyst to detect hydrogen peroxide (H2O2). The as-prepared PR/Ag possessed higher conductivity than natural PR. It exhibited a high sensitivity of 603.54 μA mM−1 cm−2 for the detection of H2O2, with a linear range of 0.1 to 30 mM, and a detection limit of 0.02 mM (S/N = 3). In addition, the PR/Ag sensor exhibited good selectivity to H2O2, resisting interference from other potential interferent compounds (e.g. uric acid, glucose, fructose and common metal ions (K+, Mg2+, Na+)). The approach is considered to provide a sensitive, selective, and reliable tool for highly detection of H2O2.</p>

Journal

  • Analytical Sciences

    Analytical Sciences 37 (11), 1589-1595, 2021-11-10

    The Japan Society for Analytical Chemistry

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