Advanced Materials

Janus Au-TiO2 Photocatalysts with Strong Localization of Plasmonic Near-Fields for Efficient Visible-Light Hydrogen Generation

Authors

  • Zhi Wei Seh,

    1. Institute of Materials Research and Engineering, Agency for Science, Technology and Research (A*STAR), 3 Research Link, Singapore 117602, Singapore
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  • Shuhua Liu,

    1. Institute of Materials Research and Engineering, Agency for Science, Technology and Research (A*STAR), 3 Research Link, Singapore 117602, Singapore
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  • Michelle Low,

    1. Institute of Materials Research and Engineering, Agency for Science, Technology and Research (A*STAR), 3 Research Link, Singapore 117602, Singapore
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  • Shuang-Yuan Zhang,

    1. Institute of Materials Research and Engineering, Agency for Science, Technology and Research (A*STAR), 3 Research Link, Singapore 117602, Singapore
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  • Zhaolin Liu,

    Corresponding author
    1. Institute of Materials Research and Engineering, Agency for Science, Technology and Research (A*STAR), 3 Research Link, Singapore 117602, Singapore
    • Institute of Materials Research and Engineering, Agency for Science, Technology and Research (A*STAR), 3 Research Link, Singapore 117602, Singapore
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  • Adnen Mlayah,

    Corresponding author
    1. Centre d'Elaboration de Matériaux et d'Etudes Structurales, CNRS-Université de Toulouse, 29 Rue Jeanne Marvig, 31055 Toulouse, France
    • Centre d'Elaboration de Matériaux et d'Etudes Structurales, CNRS-Université de Toulouse, 29 Rue Jeanne Marvig, 31055 Toulouse, France.
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  • Ming-Yong Han

    Corresponding author
    1. Institute of Materials Research and Engineering, Agency for Science, Technology and Research (A*STAR), 3 Research Link, Singapore 117602, Singapore
    2. Division of Bioengineering, National University of Singapore, 9 Engineering Drive 1, Singapore 117576, Singapore
    • Institute of Materials Research and Engineering, Agency for Science, Technology and Research (A*STAR), 3 Research Link, Singapore 117602, Singapore
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Abstract

The first use of non-centrosymmetric Janus Au-TiO2 photocatalysts in efficient, plasmon-enhanced visible-light hydrogen generation is demonstrated. The intense localization of plasmonic near-fields close to the Au-TiO2 interface, coupled with optical transitions involving localized electronic states in amorphous TiO2 brings about enhanced optical absorption and the generation of electron-hole pairs for photocatalysis.

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