Citation: Lijun Zhang, Youlin Wu, Noritatsu Tsubaki, Zhiliang Jin. 2D/3D S-Scheme Heterojunction Interface of CeO₂-Cu₂O Promotes Ordered Charge Transfer for Efficient Photocatalytic Hydrogen Evolution[J]. Acta Physico-Chimica Sinica, ;2023, 39(12): 230205. doi: 10.3866/PKU.WHXB202302051 shu

2D/3D S-Scheme Heterojunction Interface of CeO₂-Cu₂O Promotes Ordered Charge Transfer for Efficient Photocatalytic Hydrogen Evolution

Lijun Zhang ^{1, 2} ,
Youlin Wu ¹ ,
Noritatsu Tsubaki ^2,, ,
Zhiliang Jin ^1,,

1.
School of Chemistry and Chemical Engineering, North Minzu University, Yinchuan 750021, China
2.
Department of Applied Chemistry, Graduate School of Engineering, University of Toyama, Gofuku 3190, Toyama 930-8555, Japan

Corresponding author: Noritatsu Tsubaki, tsubaki@eng.u-toyama.ac.jp Zhiliang Jin, zl-jin@nun.edu.cn
Received Date: 28 February 2023
Revised Date: 7 April 2023
Accepted Date: 10 April 2023
Available Online: 17 April 2023
Fund Project: the National Natural Science Foundation of China 22062001

Rapid intrinsic carrier recombination severely restricts the photocatalytic activity of CeO₂-based catalytic materials. In this study, a heterogeneous interfacial engineering strategy is proposed to rationally perform interface modulation. A 2D/3D S-scheme heterojunction with strong electronic interactions was constructed. A composite photocatalyst was synthesized for the 3D Cu₂O particles anchored at the edge of 2D CeO₂. First-principles calculations (based on density functional theory) and the experimental results show that a strongly coupled S-scheme heterojunction electron transport interface is formed between CeO₂ and Cu₂O, resulting in efficient carrier separation and transfer. The photocatalytic hydrogen evolution activity of the composite catalyst is significantly improved in the system with triethanolamine as the sacrificial agent and is 48 times as that of CeO₂. In addition, the resulting CeO₂-Cu₂O photocatalyst affords highly stable photocatalytic hydrogen activity. This provides a general technique for constructing unique interfaces in novel nanocomposite structures.
- CeO₂,
- Cu₂O,
- DFT,
- S-scheme heterostructure,
- Photocatalytic hydrogen evolution
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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

2D/3D S-Scheme Heterojunction Interface of CeO2-Cu2O Promotes Ordered Charge Transfer for Efficient Photocatalytic Hydrogen Evolution

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通讯作者: 陈斌, bchen63@163.com

2D/3D S-Scheme Heterojunction Interface of CeO₂-Cu₂O Promotes Ordered Charge Transfer for Efficient Photocatalytic Hydrogen Evolution