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    Enhanced photocatalytic hydrogen evolution from organic semiconductor heterojunction nanoparticles

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    Enhanced photocatalytic hydrogen evolution from organic semiconductor heterojunction nanoparticles.pdf
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    1.519Mb
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    PDF
    Description:
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    Type
    Article
    Authors
    Kosco, Jan cc
    Bidwell, Matthew cc
    Cha, Hyojung
    Martin, Tyler
    Howells, Calvyn Travis
    Sachs, Michael cc
    Anjum, Dalaver H.
    Gonzalez Lopez, Sandra
    Zou, Lingyu
    Wadsworth, Andrew cc
    Zhang, Weimin
    Zhang, Lisheng
    Tellam, James cc
    Sougrat, Rachid
    Laquai, Frédéric cc
    DeLongchamp, Dean M.
    Durrant, James R. cc
    McCulloch, Iain cc
    KAUST Department
    Biological and Environmental Sciences and Engineering (BESE) Division
    Chemical Science Program
    Electron Microscopy
    Imaging and Characterization Core Lab
    KAUST Solar Center (KSC)
    Material Science and Engineering
    Material Science and Engineering Program
    Physical Science and Engineering (PSE) Division
    Water Desalination and Reuse Research Center (WDRC)
    Date
    2020-02-03
    Online Publication Date
    2020-02-03
    Print Publication Date
    2020-05
    Embargo End Date
    2020-08-03
    Submitted Date
    2019-09-17
    Permanent link to this record
    http://hdl.handle.net/10754/661438
    
    Metadata
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    Abstract
    Photocatalysts formed from a single organic semiconductor typically suffer from inefficient intrinsic charge generation, which leads to low photocatalytic activities. We demonstrate that incorporating a heterojunction between a donor polymer (PTB7-Th) and non-fullerene acceptor (EH-IDTBR) in organic nanoparticles (NPs) can result in hydrogen evolution photocatalysts with greatly enhanced photocatalytic activity. Control of the nanomorphology of these NPs was achieved by varying the stabilizing surfactant employed during NP fabrication, converting it from a core-shell structure to an intermixed donor/acceptor blend and increasing H2 evolution by an order of magnitude. The resulting photocatalysts display an unprecedentedly high H2 evolution rate of over 60,000 µmol h-1 g-1 under 350 to 800 nm illumination, and external quantum efficiencies over 6% in the region of maximum solar photon flux.
    Citation
    Kosco, J., Bidwell, M., Cha, H., Martin, T., Howells, C. T., Sachs, M., … McCulloch, I. (2020). Enhanced photocatalytic hydrogen evolution from organic semiconductor heterojunction nanoparticles. Nature Materials. doi:10.1038/s41563-019-0591-1
    Sponsors
    The research reported in this publication was supported by funding from King Abdullah University of Science and Technology Office of Sponsored Research (OSR) under awards no. OSR-2018-CARF/CCF-3079 and no. OSR-2015-CRG4-2572. This work was supported by the nSoft consortium. Certain commercial products or company names are identified here to describe our study adequately. Such identification is not intended to imply recommendation or endorsement by the National Institute of Standards and Technology, nor is it intended to imply that the products or names identified are necessarily the best available for the purpose
    Publisher
    Springer Nature
    Journal
    Nature Materials
    DOI
    10.1038/s41563-019-0591-1
    Additional Links
    http://www.nature.com/articles/s41563-019-0591-1
    ae974a485f413a2113503eed53cd6c53
    10.1038/s41563-019-0591-1
    Scopus Count
    Collections
    Articles; Biological and Environmental Science and Engineering (BESE) Division; Imaging and Characterization Core Lab; Physical Science and Engineering (PSE) Division; Chemical Science Program; Material Science and Engineering Program; Water Desalination and Reuse Research Center (WDRC); KAUST Solar Center (KSC)

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