Ultrathin fluorine-doped TiO₂(B) nanosheets-anchored hierarchical cog wheel-shaped NH₂-MIL-53(Al) for boosting photocatalytic activity
Date
2023
Authors
Zhu, C.
Yao, H.
Sun, T.
Le, S.
Jin, Q.
Chen, C.
Xu, H.
Wang, S.
Editors
Advisors
Journal Title
Journal ISSN
Volume Title
Type:
Journal article
Citation
Chemical Engineering Journal, 2023; 460:141849-1-141849-10
Statement of Responsibility
Chengzhang Zhu, Haiqian Yao, Tianyu Sun, Shukun Le, Qijie Jin, Chuanxiang Chen, Haitao Xu, Shaobin Wang
Conference Name
Abstract
Developing novel S-scheme systems with highly active solar-driven catalysts are of huge interest in degrading noxious antibiotics in a sustainable manner. Herein, fluorine (F)-doped TiO2(B) nanosheets-modified gear-shaped NH2-MIL-53(Al) were first fabricated for tetracycline degradation. Benefiting from the synergy among the incorporated F species, well-matched band structure, and built-in electric field, the optimized nanohybrid attains an impressive degradation rate (94.6 %) and TOC mineralization efficiency (71.4 %). Moreover, the addition of external interferential ions, such as Cu2+ or NO3− nearly have no influence on the photoactivity. A probable degradation pathway was proposed on the basis of the calculated Fuki indexes and prime intermediates identified by a high-performance liquid chromatography-mass spectrometer. On NH2-MIL-53(Al)/F-TiO2(B) interfaces, the migration of electrons from F-TiO2(B) to NH2-MIL-53(Al) via intense electronic interactions contribute to a S-scheme mode, which is conductive to facilitating rapid spatial charge separation, superior visible light utilization, and populated exposed active sites with high potentials. This study paves new avenues to an atomic-scale interfacial engineering of S-scheme heterojunctions for efficient water purification.
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Dissertation Note
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Description
Available online 11 February 2023
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© 2023 Elsevier B.V. All rights reserved.