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Ultrastable Au nanoparticles on titania through an encapsulation strategy under oxidative atmosphere

Author

Listed:
  • Shaofeng Liu

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

  • Wei Xu

    (Chinese Academy of Sciences
    Rome International Center for Materials Science Superstripes)

  • Yiming Niu

    (Chinese Academy of Sciences)

  • Bingsen Zhang

    (Chinese Academy of Sciences)

  • Lirong Zheng

    (Chinese Academy of Sciences)

  • Wei Liu

    (Chinese Academy of Sciences)

  • Lin Li

    (Chinese Academy of Sciences)

  • Junhu Wang

    (Chinese Academy of Sciences
    Chinese Academy of Sciences)

Abstract

Supported gold catalysts play a crucial role in the chemical industry; however, their poor on-stream stability because of the sintering of the gold nanoparticles restricts their practical application. The strong metal-support interaction (SMSI), an important concept in heterogeneous catalysis, may be applied to construct the structure of catalysts and, hence, improve their reactivity and stability. Here we report an ultrastable Au nanocatalyst after calcination at 800 °C, in which Au nanoparticles are encapsulated by a permeable TiOx thin layer induced by melamine under oxidative atmosphere. Owning to the formed TiOx overlayer, the resulting Au catalyst is resistant to sintering and exhibits excellent activity and stability for catalytic CO oxidation. Furthermore, this special strategy can be extended to colloidal Au nanoparticles supported on TiO2 and commercial gold catalyst denoted as RR2Ti, providing a universal way to engineer and develop highly stable supported Au catalysts with tunable activity.

Suggested Citation

  • Shaofeng Liu & Wei Xu & Yiming Niu & Bingsen Zhang & Lirong Zheng & Wei Liu & Lin Li & Junhu Wang, 2019. "Ultrastable Au nanoparticles on titania through an encapsulation strategy under oxidative atmosphere," Nature Communications, Nature, vol. 10(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-13755-5
    DOI: 10.1038/s41467-019-13755-5
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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. Ming Xu & Xuetao Qin & Yao Xu & Xiaochen Zhang & Lirong Zheng & Jin-Xun Liu & Meng Wang & Xi Liu & Ding Ma, 2022. "Boosting CO hydrogenation towards C2+ hydrocarbons over interfacial TiO2−x/Ni catalysts," Nature Communications, Nature, vol. 13(1), pages 1-11, December.

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