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Boosting reactivity of water-gas shift reaction by synergistic function over CeO2-x/CoO1-x/Co dual interfacial structures

Author

Listed:
  • Xin-Pu Fu

    (Shandong University)

  • Cui-Ping Wu

    (Shandong University)

  • Wei-Wei Wang

    (Shandong University)

  • Zhao Jin

    (Shandong University)

  • Jin-Cheng Liu

    (Nankai University)

  • Chao Ma

    (Hunan University)

  • Chun-Jiang Jia

    (Shandong University)

Abstract

Dual-interfacial structure within catalysts is capable of mitigating the detrimentally completive adsorption during the catalysis process, but its construction strategy and mechanism understanding remain vastly lacking. Here, a highly active dual-interfaces of CeO2-x/CoO1-x/Co is constructed using the pronounced interfacial interaction from surrounding small CeO2-x islets, which shows high activity in catalyzing the water-gas shift reaction. Kinetic evidence and in-situ characterization results revealed that CeO2-x modulates the oxidized state of Co species and consequently generates the dual active CeO2-x/CoO1-x/Co interface during the WGS reaction. A synergistic redox mechanism comprised of independent contribution from dual functional interfaces, including CeO2-x/CoO1-x and CoO1-x/Co, is authenticated by experimental and theoretical results, where the CeO2-x/CoO1-x interface alleviates the CO poison effect, and the CoO1-x/Co interface promotes the H2 formation. The results may provide guidance for fabricating dual-interfacial structures within catalysts and shed light on the mechanism over multi-component catalyst systems.

Suggested Citation

  • Xin-Pu Fu & Cui-Ping Wu & Wei-Wei Wang & Zhao Jin & Jin-Cheng Liu & Chao Ma & Chun-Jiang Jia, 2023. "Boosting reactivity of water-gas shift reaction by synergistic function over CeO2-x/CoO1-x/Co dual interfacial structures," Nature Communications, Nature, vol. 14(1), pages 1-11, December.
    • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-42577-9
    DOI: 10.1038/s41467-023-42577-9
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    References listed on IDEAS

    as
    1. Han Yan & Chun Yang & Wei-Peng Shao & Li-Hua Cai & Wei-Wei Wang & Zhao Jin & Chun-Jiang Jia, 2019. "Construction of stabilized bulk-nano interfaces for highly promoted inverse CeO2/Cu catalyst," Nature Communications, Nature, vol. 10(1), pages 1-10, December.
    2. Kai Xu & Chao Ma & Han Yan & Hao Gu & Wei-Wei Wang & Shan-Qing Li & Qing-Lu Meng & Wei-Peng Shao & Guo-Heng Ding & Feng Ryan Wang & Chun-Jiang Jia, 2022. "Catalytically efficient Ni-NiOx-Y2O3 interface for medium temperature water-gas shift reaction," Nature Communications, Nature, vol. 13(1), pages 1-9, December.
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