首页|Photocatalytic seawater splitting by 2D heterostructure of ZnIn2S4/WO3 decorated with plasmonic Au for hydrogen evolution under visible light

Photocatalytic seawater splitting by 2D heterostructure of ZnIn2S4/WO3 decorated with plasmonic Au for hydrogen evolution under visible light

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Photocatalytic H2 evolution from seawater splitting presents a promising approach to tackle the fossil energy crisis and mitigate carbon emission due to the abundant source of seawater and sunlight on the earth.However,the development of efficient photocatalysts for seawater splitting remains a formid-able challenge.Herein,a 2D/2D ZnIn2S4/WO3(ZIS/WO3)heterojunction nanostructure is fabricated to efficiently separate the photoinduced carriers by steering electron transfer from the conduction band minimum of WO3 to the valence band maximum of ZIS via constructing internal electric field.Subsequently,plasmonic Au nanoparticles(NPs)as a novel photosensitizer and a reduction cocatalyst are anchored on ZIS/WO3 surface to further enhance the optical absorption of ZIS/WO3 heterojunction and accelerate the catalytic conversion.The obtained Au/ZIS/WO3 photocatalyst exhibits an outstanding H2 evolution rate of 2610.6 or 3566.3 μmol g-1 h-1 from seawater splitting under visible or full-spectrum light irradiation,respectively.These rates represent an impressive increase of approximately 7.3-and 6.6-fold compared to those of ZIS under the illumination of the same light source.The unique 2D/2D struc-ture,internal electric field,and plasmonic metal modification together boost the photocatalytic H2 evo-lution rate of Au/ZIS/WO3,making it even comparable to H2 evolution from pure water splitting.The present work sheds light on the development of efficient photocatalysts for seawater splitting.

Photocatalytic seawater splitting2D/2D ZnIn2S4/WO3Surface plasmon resonance effectInterfacial electric field

Huiqin An、Yanjun Wang、Xing Xiao、Jiaxin Liu、Zhiyao Ma、Tianxin Gao、Wanyu Hong、Lizhi Zhao、Hong Wang、Qingjun Zhu、Shanshan Chen、Zhen Yin

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School of Chemistry,Tiangong University,Tianjin 300387,China

School of Materials Science and Engineering,Tiangong University,Tianjin 300387,China

Deutsches Elektronen-Synchrotron DESY,15738 Zeuthen,Germany

School of Materials Science and Engineering & National Institute for Advanced Materials,Nankai University,Tianjin 300350,China

College of Chemical Engineering and Materials Science,Tianjin University of Science and Technology,Tianjin 300457,China

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National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNatural Science Foundation of Tianjin for Distinguished Young ScholarAnalytical & Testing Center of Tiangong University for PL work

2187210421501131219782162227208220JCJQJC00150

2024

10.1016/j.jechem.2024.01.041

能源化学
中国科学院大连化学物理研究所 中国科学院成都有机化学研究所

能源化学

CSTPCDEI
影响因子：0.654
ISSN：2095-4956
年,卷(期)：2024.93(6)
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