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Size-dependent strong metal-support interaction in TiO2 supported Au nanocatalysts

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  • Xiaorui Du

    (CAS Key Laboratory of Science and Technology on Applied Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences
    State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences)

  • Yike Huang

    (CAS Key Laboratory of Science and Technology on Applied Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Xiaoli Pan

    (CAS Key Laboratory of Science and Technology on Applied Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences)

  • Bing Han

    (CAS Key Laboratory of Science and Technology on Applied Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Yang Su

    (CAS Key Laboratory of Science and Technology on Applied Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences)

  • Qike Jiang

    (Dalian National Laboratory for Clean Energy)

  • Mingrun Li

    (State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences)

  • Hailian Tang

    (CAS Key Laboratory of Science and Technology on Applied Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences
    Hebei University)

  • Gao Li

    (State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences)

  • Botao Qiao

    (CAS Key Laboratory of Science and Technology on Applied Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences
    Dalian National Laboratory for Clean Energy)

Abstract

The strong metal-support interaction (SMSI) has long been studied in heterogonous catalysis on account of its importance in stabilizing active metals and tuning catalytic performance. As a dynamic process taking place at the metal-support interface, the SMSI is closely related to the metal surface properties which are usually affected by the size of metal nanoparticles (NPs). In this work we report the discovery of a size effect on classical SMSI in Au/TiO2 catalyst where larger Au particles are more prone to be encapsulated than smaller ones. A thermodynamic equilibrium model was established to describe this phenomenon. According to this finding, the catalytic performance of Au/TiO2 catalyst with uneven size distribution can be improved by selectively encapsulating the large Au NPs in a hydrogenation reaction. This work not only brings in-depth understanding of the SMSI phenomenon and its formation mechanism, but also provides an alternative approach to refine catalyst performance.

Suggested Citation

  • Xiaorui Du & Yike Huang & Xiaoli Pan & Bing Han & Yang Su & Qike Jiang & Mingrun Li & Hailian Tang & Gao Li & Botao Qiao, 2020. "Size-dependent strong metal-support interaction in TiO2 supported Au nanocatalysts," Nature Communications, Nature, vol. 11(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-19484-4
    DOI: 10.1038/s41467-020-19484-4
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    Cited by:

    1. Jian Zhang & Dezhi Zhu & Jianfeng Yan & Chang-An Wang, 2021. "Strong metal-support interactions induced by an ultrafast laser," Nature Communications, Nature, vol. 12(1), pages 1-10, December.
    2. Yalin Guo & Yike Huang & Bin Zeng & Bing Han & Mohcin AKRI & Ming Shi & Yue Zhao & Qinghe Li & Yang Su & Lin Li & Qike Jiang & Yi-Tao Cui & Lei Li & Rengui Li & Botao Qiao & Tao Zhang, 2022. "Photo-thermo semi-hydrogenation of acetylene on Pd1/TiO2 single-atom catalyst," Nature Communications, Nature, vol. 13(1), pages 1-12, December.
    3. 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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