Enhanced photocatalytic hydrogen evolution from organic semiconductor heterojunction nanoparticles

被引：0

作者：

Jan Kosco

Matthew Bidwell

Hyojung Cha

Tyler Martin

Calvyn T. Howells

Michael Sachs

Dalaver H. Anjum

Sandra Gonzalez Lopez

Lingyu Zou

Andrew Wadsworth

Weimin Zhang

Lisheng Zhang

James Tellam

Rachid Sougrat

Frédéric Laquai

Dean M. DeLongchamp

James R. Durrant

Iain McCulloch

机构：

[1] King Abdullah University of Science and Technology (KAUST),Department of Chemistry and Centre for Plastic Electronics

[2] KAUST Solar Center,undefined

[3] Physical Sciences and Engineering Division (PSE),undefined

[4] Imperial College London,undefined

[5] Materials Science and Engineering Division,undefined

[6] National Institute of Standards and Technology,undefined

[7] ISIS,undefined

[8] STFC,undefined

[9] Rutherford Appleton Laboratory,undefined

来源：

Nature Materials | 2020年 / 19卷

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摘要：

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.

引用

页码：559 / 565

页数：6

共 96 条

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