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A hierarchical Bi-MOF-derived BiOBr/Mn0.2Cd0.8S S-scheme for visible-light-driven photocatalytic CO2 reduction.
- Source :
- Journal of Materials Science & Technology; Sep2023, Vol. 156, p64-71, 8p
- Publication Year :
- 2023
-
Abstract
- S-scheme heterojunctions have promising applications in photocatalytic CO 2 reduction due to their unique structure and interfacial interactions, but improving their carrier separation efficiency and CO 2 adsorption capacity remains a challenge. In this work, highly dispersed MOF-BiOBr/Mn 0.2 Cd 0.8 S (MOF-BiOBr/MCS) S-scheme heterojunctions with high photocatalytic CO 2 reduction performance were constructed. The intimate contact between the MCS nano-spheres and the nanosheet-assembled MOF-BiOBr rods, driven by the internal electric field, accelerates the charge transfer along the S-scheme pathway. Moreover, the high specific surface area of MOFs is preserved to provide abundant active sites for reaction/adsorption. The formation of MOF-BiOBr/MCS S-scheme heterojunction is confirmed by theoretical calculations. The optimum MOF-BiOBr/MCS shows excellent activity in CO 2 reduction, affording a high CO evolution rate of 60.59 µmol h<superscript>−1</superscript> g<superscript>−1</superscript>. The present work can inspire the exploration for the construction of effective heterostructure photocatalysts for photoreduction CO 2. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 10050302
- Volume :
- 156
- Database :
- Supplemental Index
- Journal :
- Journal of Materials Science & Technology
- Publication Type :
- Periodical
- Accession number :
- 164300730
- Full Text :
- https://doi.org/10.1016/j.jmst.2023.03.003