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Reduction of precious metal ions in aqueous solutions by contact-electro-catalysis

Author

Listed:
  • Yusen Su

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Andy Berbille

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Xiao-Fen Li

    (Chinese Academy of Sciences
    Tsinghua University)

  • Jinyang Zhang

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • MohammadJavad PourhosseiniAsl

    (Chinese Academy of Sciences
    Peking University)

  • Huifan Li

    (Chinese Academy of Sciences
    Guangxi University)

  • Zhanqi Liu

    (Chinese Academy of Sciences
    Lanzhou University)

  • Shunning Li

    (Peking University)

  • Jianbo Liu

    (Tsinghua University)

  • Laipan Zhu

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Zhong Lin Wang

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences
    Yonsei University
    Georgia Institute of Technology)

Abstract

Precious metals are core assets for the development of modern technologies in various fields. Their scarcity poses the question of their cost, life cycle and reuse. Recently, an emerging catalysis employing contact-electrification (CE) at water-solid interfaces to drive redox reaction, called contact-electro-catalysis (CEC), has been used to develop metal free mechano-catalytic methods to efficiently degrade refractory organic compounds, produce hydrogen peroxide, or leach metals from spent Li-Ion batteries. Here, we show ultrasonic CEC can successfully drive the reduction of Ag(ac), Rh3+, [PtCl4]2-, Ag+, Hg2+, Pd2+, [AuCl4]-, and Ir3+, in both anaerobic and aerobic conditions. The effect of oxygen on the reaction is studied by electron paramagnetic resonance (EPR) spectroscopy and ab-initio simulation. Combining measurements of charge transfers during water-solid CE, EPR spectroscopy and gold extraction experiments help show the link between CE and CEC. What’s more, this method based on water-solid CE is capable of extracting gold from synthetic solutions with concentrations ranging from as low as 0.196 ppm up to 196 ppm, reaching in 3 h extraction capacities ranging from 0.756 to 722.5 mg g−1 in 3 h. Finally, we showed CEC is employed to design a metal-free, selective, and recyclable catalytic gold extraction methods from e-waste aqueous leachates.

Suggested Citation

  • Yusen Su & Andy Berbille & Xiao-Fen Li & Jinyang Zhang & MohammadJavad PourhosseiniAsl & Huifan Li & Zhanqi Liu & Shunning Li & Jianbo Liu & Laipan Zhu & Zhong Lin Wang, 2024. "Reduction of precious metal ions in aqueous solutions by contact-electro-catalysis," Nature Communications, Nature, vol. 15(1), pages 1-9, December.
  • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-48407-w
    DOI: 10.1038/s41467-024-48407-w
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    References listed on IDEAS

    as
    1. Yao Chen & Mengjiao Xu & Jieya Wen & Yu Wan & Qingfei Zhao & Xia Cao & Yong Ding & Zhong Lin Wang & Hexing Li & Zhenfeng Bian, 2021. "Selective recovery of precious metals through photocatalysis," Nature Sustainability, Nature, vol. 4(7), pages 618-626, July.
    2. Ziming Wang & Andy Berbille & Yawei Feng & Site Li & Laipan Zhu & Wei Tang & Zhong Lin Wang, 2022. "Contact-electro-catalysis for the degradation of organic pollutants using pristine dielectric powders," Nature Communications, Nature, vol. 13(1), pages 1-9, December.
    3. Huifan Li & Andy Berbille & Xin Zhao & Ziming Wang & Wei Tang & Zhong Lin Wang, 2023. "A contact-electro-catalytic cathode recycling method for spent lithium-ion batteries," Nature Energy, Nature, vol. 8(10), pages 1137-1144, October.
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