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  • Perovskite Microcrystals with Intercalated Monolayer MoS2 Nanosheets as Advanced Photocatalyst for Solar-Powered Hydrogen Generation

    Author(s)
    Zhao, X
    Chen, S
    Yin, H
    Jiang, S
    Zhao, K
    Kang, J
    Liu, PF
    Jiang, L
    Zhu, Z
    Cui, D
    Liu, P
    Han, X
    Yang, HG
    Zhao, H
    Griffith University Author(s)
    Chen, Shan
    Zhao, Huijun
    Yin, Huajie
    Liu, Porun
    Kang, Jian
    Jiang, Shuaiyu
    Zhao, Xiaole
    Zhao, Kun
    Jiang, Lixue
    Zhu, Zhengju
    Year published
    2020
    Metadata
    Show full item record
    Abstract
    Photocatalytic water splitting holds a key to realizing the hydrogen economy but faces a grand challenge, namely, the severe charge recombination causes low solar-to-hydrogen (STH) efficiency. This work reports a new form of MAPbI3 microcrystal (MAPbI3-MC)/monolayer MoS2 nanosheets (ML-MoS2) composite photocatalyst with type II heterojunction to effectively suppress the charge recombination for efficient photocatalytic hydrogen generation via HI splitting. The ML-MoS2/MAPbI3-MC is made of a large-sized MAPbI3-MC light harvester anchored with electrocatalytically active ML-MoS2 nanosheets to form a type II heterojunction that ...
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    Photocatalytic water splitting holds a key to realizing the hydrogen economy but faces a grand challenge, namely, the severe charge recombination causes low solar-to-hydrogen (STH) efficiency. This work reports a new form of MAPbI3 microcrystal (MAPbI3-MC)/monolayer MoS2 nanosheets (ML-MoS2) composite photocatalyst with type II heterojunction to effectively suppress the charge recombination for efficient photocatalytic hydrogen generation via HI splitting. The ML-MoS2/MAPbI3-MC is made of a large-sized MAPbI3-MC light harvester anchored with electrocatalytically active ML-MoS2 nanosheets to form a type II heterojunction that possesses a strong built-in electric field aligned between the spatially well-defined MAPbI3-MC and ML-MoS2 nanosheets to empower the photocatalyst with superior capability to effectively promote the charge separation. The ML-MoS2/MAPbI3-MC brings the hydrogen generation performance of the perovskite-based photocatalysts to a new horizon with a champion STH efficiency of 1.09% and a record hydrogen generation activity of 13.6 mmol g−1 h−1 under visible light.
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    Journal Title
    Matter
    DOI
    https://doi.org/10.1016/j.matt.2020.07.004
    Note
    This publication has been entered as an advanced online version in Griffith Research Online.
    Subject
    Nanotechnology
    Publication URI
    http://hdl.handle.net/10072/396668
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