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  • Installation of high-valence tungsten in MIL-125(Ti) for boosted photocatalytic hydrogen evolution

    Author(s)
    Zhang, Y
    Mao, F
    Liu, Y
    Wu, X
    Wen, C
    Dai, S
    Liu, P
    Yang, H
    Griffith University Author(s)
    Yang, Huagui
    Year published
    2021
    Metadata
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    Abstract
    Metal-organic frameworks (MOFs) possess the features of highly porosity-tunable and electronic-tunable structures. Taking advantages of these merits, we successfully installed high-valence W6+ ions onto the Ti-oxo clusters of MIL-125(Ti) (W-MIL-125). The installed W6+ ions which form a W-O-Ti structure trigger the metal-to-cluster charge transfer (MCCT), together with an enhanced light absorption. Structural and spectroscopic characterizations reveal that the MCCT process optimizes the charge transfer process and efficiently separates the photogenerated electron-hole spatially. The as-obtained sample of 3.45 W-MIL-125 with ...
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    Metal-organic frameworks (MOFs) possess the features of highly porosity-tunable and electronic-tunable structures. Taking advantages of these merits, we successfully installed high-valence W6+ ions onto the Ti-oxo clusters of MIL-125(Ti) (W-MIL-125). The installed W6+ ions which form a W-O-Ti structure trigger the metal-to-cluster charge transfer (MCCT), together with an enhanced light absorption. Structural and spectroscopic characterizations reveal that the MCCT process optimizes the charge transfer process and efficiently separates the photogenerated electron-hole spatially. The as-obtained sample of 3.45 W-MIL-125 with optimized electronic structure demonstrates an enhanced photocatalytic hydrogen evolution performance of 1110.7 ± 63.7 µmol g−1 h−1 under light irradiation, which is 4.0 times that of the pristine MIL-125(Ti). This work will open up a new avenue for local structural modification of MOFs to boost photocatalytic performance.
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    Journal Title
    Science China Materials
    DOI
    https://doi.org/10.1007/s40843-021-1898-6
    Note
    This publication has been entered in Griffith Research Online as an advanced online version.
    Subject
    Macromolecular and materials chemistry
    Nanochemistry
    photocatalytic hydrogen production
    metalto-cluster charge transfer
    metal-organic frameworks
    high-valence state
    Publication URI
    http://hdl.handle.net/10072/411697
    Collection
    • Journal articles

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