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Br−/BrO−-mediated highly efficient photoelectrochemical epoxidation of alkenes on α-Fe2O3

Author

Listed:
  • Yukun Zhao

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

  • Mengyu Duan

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

  • Chaoyuan Deng

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

  • Jie Yang

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

  • Sipeng Yang

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

  • Yuchao Zhang

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

  • Hua Sheng

    (Chinese Academy of Sciences)

  • Youji Li

    (Jishou University)

  • Chuncheng Chen

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

  • Jincai Zhao

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

Abstract

Epoxides are significant intermediates for the manufacture of pharmaceuticals and epoxy resins. In this study, we develop a Br−/BrO− mediated photoelectrochemical epoxidation system on α-Fe2O3. High selectivity (up to >99%) and faradaic efficiency (up to 82 ± 4%) for the epoxidation of a wide range of alkenes are achieved, with water as oxygen source, which are far beyond the most reported electrochemical and photoelectrochemical epoxidation performances. Further, we can verify that the epoxidation reaction is mediated by Br−/BrO− route, in which Br− is oxidized non-radically to BrO− by an oxygen atom transfer pathway on α-Fe2O3, and the formed BrO− in turn transfers its oxygen atom to the alkenes. The non-radical mediated characteristic and the favorable thermodynamics of the oxygen atom transfer process make the epoxidation reactions very efficient. We believe that this photoelectrochemical Br−/BrO−-mediated epoxidation provides a promising strategy for value-added production of epoxides and hydrogen.

Suggested Citation

  • Yukun Zhao & Mengyu Duan & Chaoyuan Deng & Jie Yang & Sipeng Yang & Yuchao Zhang & Hua Sheng & Youji Li & Chuncheng Chen & Jincai Zhao, 2023. "Br−/BrO−-mediated highly efficient photoelectrochemical epoxidation of alkenes on α-Fe2O3," Nature Communications, Nature, vol. 14(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-37620-8
    DOI: 10.1038/s41467-023-37620-8
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    References listed on IDEAS

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    1. Shubo Tian & Qiang Fu & Wenxing Chen & Quanchen Feng & Zheng Chen & Jian Zhang & Weng-Chon Cheong & Rong Yu & Lin Gu & Juncai Dong & Jun Luo & Chen Chen & Qing Peng & Claudia Draxl & Dingsheng Wang & , 2018. "Carbon nitride supported Fe2 cluster catalysts with superior performance for alkene epoxidation," Nature Communications, Nature, vol. 9(1), pages 1-7, December.
    2. Linping Qian & Zhen Wang & Evgeny V. Beletskiy & Jingyue Liu & Haroldo J. dos Santos & Tiehu Li & Maria do C. Rangel & Mayfair C. Kung & Harold H. Kung, 2017. "Stable and solubilized active Au atom clusters for selective epoxidation of cis-cyclooctene with molecular oxygen," Nature Communications, Nature, vol. 8(1), pages 1-9, April.
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