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Rational approach to guest confinement inside MOF cavities for low-temperature catalysis

Author

Listed:
  • Tiesheng Wang

    (University of Cambridge
    University of Cambridge
    The University of Sydney)

  • Lijun Gao

    (Chinese Academy of Sciences)

  • Jingwei Hou

    (University of Cambridge
    The University of New South Wales)

  • Servann J. A. Herou

    (Queen Mary University of London
    Queen Mary University of London
    Imperial College London)

  • James T. Griffiths

    (University of Cambridge)

  • Weiwei Li

    (University of Cambridge)

  • Jinhu Dong

    (Chinese Academy of Sciences)

  • Song Gao

    (The University of New South Wales)

  • Maria-Magdalena Titirici

    (Queen Mary University of London
    Queen Mary University of London
    Imperial College London)

  • R. Vasant Kumar

    (University of Cambridge)

  • Anthony K. Cheetham

    (University of Cambridge
    National University of Singapore)

  • Xinhe Bao

    (Chinese Academy of Sciences)

  • Qiang Fu

    (Chinese Academy of Sciences)

  • Stoyan K. Smoukov

    (University of Cambridge
    Queen Mary University of London
    Queen Mary University of London
    Sofia University)

Abstract

Geometric or electronic confinement of guests inside nanoporous hosts promises to deliver unusual catalytic or opto-electronic functionality from existing materials but is challenging to obtain particularly using metastable hosts, such as metal–organic frameworks (MOFs). Reagents (e.g. precursor) may be too large for impregnation and synthesis conditions may also destroy the hosts. Here we use thermodynamic Pourbaix diagrams (favorable redox and pH conditions) to describe a general method for metal-compound guest synthesis by rationally selecting reaction agents and conditions. Specifically we demonstrate a MOF-confined RuO2 catalyst (RuO2@MOF-808-P) with exceptionally high catalytic CO oxidation below 150 °C as compared to the conventionally made SiO2-supported RuO2 (RuO2/SiO2). This can be caused by weaker interactions between CO/O and the MOF-encapsulated RuO2 surface thus avoiding adsorption-induced catalytic surface passivation. We further describe applications of the Pourbaix-enabled guest synthesis (PEGS) strategy with tutorial examples for the general synthesis of arbitrary guests (e.g. metals, oxides, hydroxides, sulfides).

Suggested Citation

  • Tiesheng Wang & Lijun Gao & Jingwei Hou & Servann J. A. Herou & James T. Griffiths & Weiwei Li & Jinhu Dong & Song Gao & Maria-Magdalena Titirici & R. Vasant Kumar & Anthony K. Cheetham & Xinhe Bao & , 2019. "Rational approach to guest confinement inside MOF cavities for low-temperature catalysis," Nature Communications, Nature, vol. 10(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-08972-x
    DOI: 10.1038/s41467-019-08972-x
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    Cited by:

    1. Chenchen Meng & Baofu Ding & Shaoze Zhang & Lele Cui & Kostya Ken Ostrikov & Ziyang Huang & Bo Yang & Jae-Hong Kim & Zhenghua Zhang, 2022. "Angstrom-confined catalytic water purification within Co-TiOx laminar membrane nanochannels," Nature Communications, Nature, vol. 13(1), pages 1-10, December.
    2. Song, Wenjing & Song, Mengxue & Cai, Wenqing & Li, Weichu & Jiang, Xingmao & Fang, Weiping & Lai, Weikun, 2022. "Efficient and stable SiO2-encapsulated NiPt/HY catalyst for catalytic cracking of β-O-4 linkage compound," Renewable Energy, Elsevier, vol. 198(C), pages 334-342.

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