S-Scheme Heterojunction Efficient Extraction of Hot Carriers in CsPbBr3/Bi4O5I2 for Enhanced Photocatalytic H2 Evolution and CO2 Reduction
Source abstract
Abstract
This study investigates the photocatalytic capabilities of an S-scheme heterojunction formed by CsPbBr 3 and Bi 4 O 5 I 2 for H 2 evolution and CO 2 reduction. The heterojunction is designed to enhance the extraction of hot carriers and charge separation through interface engineering and an internal electric field. The initial T c at higher pumping intensities indicates that CsPbBr 3 carriers injected into Bi 4 O 5 I 2 at higher energies and temperatures cooled from 1800 to 800 K within 200 fs after photoexcitation. Compared with CsPbBr 3, CsPbBr 3 /Bi 4 O 5 I 2 showed substantial improvement in photocatalytic H 2 production from 59.08 to 1050.93 μmol h –1 g –1 . Furthermore, the S-scheme CsPbBr 3 /Bi 4 O 5 I 2 heterojunction displays outstanding photocatalytic CO 2 to CO performance, compared to pure CsPbBr 3, from 2.84 to 83.6 μmol h –1 g –1 . These findings contribute to the understanding and development of S-scheme heterojunction extraction of hot carriers in perovskite materials for photocatalytic applications.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Advanced Photocatalysis Techniques · Perovskite Materials and Applications · 2D Materials and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Information Engineering Institute, Quzhou College of Technology, Quzhou 324000, China
Key Laboratory of Agro-Forestry Environmental Processes and Ecological Regulation of Hainan Province, School of Environmental Science and Engineering, Hainan University, Haikou 570228, China
Key Laboratory of Shandong Ocean Fine Chemical, Shandong Ocean Chemical Industry Scientific Research Institute, Weifang 262737, China
Funding
Key Research and Development Project of Hainan Province · Hainan University · National Natural Science Foundation of China · Department of Education of Zhejiang Province · Quzhou College of Technology · Hainan Higher Education Institutions
References (49)
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