首页|Insight into the synergistic effect of defect and strong interface coupling on ZnIn2S4/CoIn2S4 heterostructure for boosting photocatalytic H2 evolution

Insight into the synergistic effect of defect and strong interface coupling on ZnIn2S4/CoIn2S4 heterostructure for boosting photocatalytic H2 evolution

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Steering the directional carrier migration across the interface is a central mission for efficient photocat-alytic reactions.In this work,an atomic-shared heterointerface is constructed between the defect-rich ZnIn2S4(HVs-ZIS)and Coln2S4(CIS)via a defect-guided heteroepitaxial growth strategy.The strong inter-face coupling induces adequate carriers exchanging passageway between HVs-ZIS and CIS,enhancing the internal electric field(IEF)in the Znln2S4/CoIn2S4(HVs-ZIS/CIS)heterostructure.The defect structure in HVs-ZIS induces an additional defect level,improving the separation efficiency of photocarriers.Moreover,promoted by the IEF and intimate heterointerface,photogenerated electrons trapped by the defect level can migrate to the valence band of CIS,contributing to massive photogenerated electrons with intense reducibility in HVs-ZIS/CIS.Consequently,the HVs-ZIS/CIS heterostructure performs a boosted H2 evolution activity of 33.65 mmol g-1 h-1.This work highlights the synergistic effects of defect and strong interface coupling in regulating carrier transfer and paves a brave avenue for constructing effi-cient heterostructure photocatalysts.

Defect-guided heteroepitaxial growthHeterointerface couplingPhotocatalytic H2 evolutionMechanismHVs-ZIS/CIS

Xuehua Wang、Tianyu Shi、Xianghu Wang、Aili Song、Guicun Li、Lei Wang、Jianfeng Huang、Alan Meng、Zhenjiang Li

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College of Materials Science and Engineering,Qingdao University of Science and Technology,Qingdao 266042,Shandong,China

Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science,MOE,College of Chemistry and Molecular Engineering,Qingdao University of Science and Technology,Qingdao 266042,Shandong,China

Qingdao Huanghai University,Qingdao 266000,Shandong,China

School of Material Science and Engineering,International S&T Cooperation Foundation of Shaanxi Province,Xi'an Key Laboratory of Green Manufacture of Ceramic Materials,Shaanxi University of Science and Technology,Xi'an 710021,Shaanxi,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 ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaMajor Basic Research Program of Natural Science Foundation of Shandong ProvinceNatural Science Foundation of Shandong ProvinceNatural Science Foundation of Shandong ProvinceNatural Science Foundation of Shandong ProvinceChina Postdoctoral Science Foundation

520721965200220052102106522022622237908122379080ZR2020ZD09ZR2020QE063ZR202108180009ZR2023QE0592023M741871

2024

10.1016/j.jechem.2023.12.040

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)：2024.92(5)