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Facet-engineered TiO2 drives photocatalytic activity and stability of supported noble metal clusters during H2 evolution

Author

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  • Yufen Chen

    (Universitat Politècnica de Catalunya
    Universitat Politècnica de Catalunya)

  • Lluís Soler

    (Universitat Politècnica de Catalunya
    Universitat Politècnica de Catalunya)

  • Claudio Cazorla

    (Universitat Politècnica de Catalunya)

  • Jana Oliveras

    (CSIC and The Barcelona Institute of Science and Technology (BIST))

  • Neus G. Bastús

    (CSIC and The Barcelona Institute of Science and Technology (BIST))

  • Víctor F. Puntes

    (CSIC and The Barcelona Institute of Science and Technology (BIST)
    Institució Catalana de Recerca I Estudis Avançats (ICREA)
    Hospital Universitari Vall d’Hebron)

  • Jordi Llorca

    (Universitat Politècnica de Catalunya
    Universitat Politècnica de Catalunya)

Abstract

Metal clusters supported on TiO2 are widely used in many photocatalytic applications, including pollution control and production of solar fuels. Besides high photoactivity, stability during the photoreaction is another essential quality of high-performance photocatalysts, however systematic studies on this attribute are absent for metal clusters supported on TiO2. Here we have studied, both experimentally and with first-principles simulation methods, the stability of Pt, Pd and Au clusters prepared by ball milling on nanoshaped anatase nanoparticles preferentially exposing {001} (plates) and {101} (bipyramids) facets during the photogeneration of hydrogen. It is found that Pt/TiO2 exhibits superior stability than Pd/TiO2 and Au/TiO2, and that {001} facet-based photocatalysts always are more stable than their {101} analogous regardless of the considered metal species. The loss of stability associated with cluster sintering, which is facilitated by the transfer of photoexcited carriers from the metal species to the neighbouring Ti and O atoms, most significantly and detrimentally affects the H2-evolution photoactivity.

Suggested Citation

  • Yufen Chen & Lluís Soler & Claudio Cazorla & Jana Oliveras & Neus G. Bastús & Víctor F. Puntes & Jordi Llorca, 2023. "Facet-engineered TiO2 drives photocatalytic activity and stability of supported noble metal clusters during H2 evolution," Nature Communications, Nature, vol. 14(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-41976-2
    DOI: 10.1038/s41467-023-41976-2
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    References listed on IDEAS

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    1. Bo Weng & Kang-Qiang Lu & Zichao Tang & Hao Ming Chen & Yi-Jun Xu, 2018. "Stabilizing ultrasmall Au clusters for enhanced photoredox catalysis," Nature Communications, Nature, vol. 9(1), pages 1-11, December.
    2. Hua Gui Yang & Cheng Hua Sun & Shi Zhang Qiao & Jin Zou & Gang Liu & Sean Campbell Smith & Hui Ming Cheng & Gao Qing Lu, 2008. "Anatase TiO2 single crystals with a large percentage of reactive facets," Nature, Nature, vol. 453(7195), pages 638-641, May.
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