Enhanced photocatalytic hydrogen evolution from organic semiconductor heterojunction nanoparticles
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ArticleAuthors
Kosco, Jan
Bidwell, Matthew

Cha, Hyojung
Martin, Tyler
Howells, Calvyn Travis
Sachs, Michael

Anjum, Dalaver H.
Gonzalez Lopez, Sandra
Zou, Lingyu
Wadsworth, Andrew

Zhang, Weimin
Zhang, Lisheng
Tellam, James

Sougrat, Rachid
Laquai, Frédéric

DeLongchamp, Dean M.
Durrant, James R.

McCulloch, Iain

KAUST Department
Biological and Environmental Sciences and Engineering (BESE) DivisionChemical 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
2020-02-03Online Publication Date
2020-02-03Print Publication Date
2020-05Embargo End Date
2020-08-03Submitted Date
2019-09-17Permanent link to this record
http://hdl.handle.net/10754/661438
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Show full item recordAbstract
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/s41563-019-0591-1Sponsors
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 purposePublisher
Springer NatureJournal
Nature MaterialsAdditional Links
http://www.nature.com/articles/s41563-019-0591-1ae974a485f413a2113503eed53cd6c53
10.1038/s41563-019-0591-1