Citation: Juhong Lian, Deng Li, Yongmei Ma, Hui Bian, Yifan Shao, Zitong Wang, Junqing Yan, Ruibin Jiang, Shengzhong (Frank) Liu, Fuxiang Zhang. Decorating CsPbBr₃ with In₂O₃ seeds to build intimate direct Z-scheme heterojunction for promoted photocatalytic CO₂ reduction[J]. Chinese Chemical Letters, ;2025, 36(11): 111394. doi: 10.1016/j.cclet.2025.111394 shu

Decorating CsPbBr₃ with In₂O₃ seeds to build intimate direct Z-scheme heterojunction for promoted photocatalytic CO₂ reduction

Juhong Lian ^{a, b, c} ,
Deng Li ^{b, *,} ,
Yongmei Ma ^a ,
Hui Bian ^{b, d} ,
Yifan Shao ^a ,
Zitong Wang ^a ,
Junqing Yan ^b ,
Ruibin Jiang ^b ,
Shengzhong (Frank) Liu ^{b, c} ,
Fuxiang Zhang ^{c, *,}

a.
College of Chemistry and Materials Science, Weinan Normal University, Weinan 714099, China
b.
Key Laboratory of Applied Surface and Colloid Chemistry, School of Materials Science and Engineering, Shaanxi Normal University, Xi’an 710119, China
c.
Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
d.
School of Science, Xi’an University of Posts and Telecommunications, Xi’an 710119, China

dengli@snnu.edu.cn

fxzhang@dicp.ac.cn

Received Date: 8 February 2025
Revised Date: 27 May 2025
Accepted Date: 28 May 2025
Available Online: 16 June 2025

Figures(5)

Building heterojunctions has proven its efficiency in promoting charge separation for highly efficient photocatalysis. However, most heterojunctions often suffer from inadequate interfacial contact between the two semiconductor phases, hindering charge separation and producing suboptimal photocatalytic performance. Herein, leveraging the soft lattice feature of halide perovskite, we intentionally introduced In₂O₃ nanoparticles as seeds in situ during the crystallization process of CsPbBr₃, constructing In₂O₃/CsPbBr₃ heterojunction with intimate and abundant interface contact. Through in situ X-ray photoelectron spectroscopy and band structure analysis, we revealed the creation of a direct Z-type heterojunction that combines the catalytic advantages of both CsPbBr₃ and In₂O₃ for CO₂ reduction and water oxidation, respectively. The enhanced interfacial contact further enables this heterojunction to separate more photogenerated charges and prolong carrier lifetime effectively. Benefiting from the improved charge utilization, as well as the chemisorption and activation of CO₂ molecules on the catalyst, the In₂O₃/CsPbBr₃ heterojunction exhibits significantly enhanced performance in CO₂ photoreduction, achieving a 3.8-fold increase in the photoelectron consumption rate as compared to that of CsPbBr₃ alone. This study emphasizes the critical importance of a tight and rich heterojunction interface in achieving efficient photocatalytic reactions.
- Heterojunction,
- Interface,
- Photocatalytic CO₂ reduction,
- Perovskite catalysts,
- Indium oxide
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沈阳化工大学材料科学与工程学院沈阳 110142

Decorating CsPbBr3 with In2O3 seeds to build intimate direct Z-scheme heterojunction for promoted photocatalytic CO2 reduction

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通讯作者: 陈斌, bchen63@163.com

Decorating CsPbBr₃ with In₂O₃ seeds to build intimate direct Z-scheme heterojunction for promoted photocatalytic CO₂ reduction