Enhanced Degradation of Norfloxacin Under Visible Light by S-Scheme Fe2O3/g–C3N4 Heterojunctions

S-scheme Fe2O3/g–C3N4 heterojunctions were successfully fabricated by the ultrasonic assistance method to remove norfloxacin (NOR) under visible light irradiation. The synthesized catalysts were well studied through various techniques. The obtained Fe2O3/g–C3N4 heterojunctions exhibited an optimal p...

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Bibliographic Details
Published in:Molecules (Basel, Switzerland) Switzerland), 2024-11, Vol.29 (21), p.5212
Main Authors: Lu, Guang, Li, Wei, Li, Zheng, Gu, Guizhou, Han, Qiuju, Liang, Jiling, Chen, Zhen
Format: Article
Language:English
Subjects:
Antibiotics
Efficiency
Electric fields
Fe2O3
g–C3N4
heterojunction
Light
Morphology
NOR
Photocatalysis
photocatalytic degradation
Spectrum analysis
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Summary:S-scheme Fe2O3/g–C3N4 heterojunctions were successfully fabricated by the ultrasonic assistance method to remove norfloxacin (NOR) under visible light irradiation. The synthesized catalysts were well studied through various techniques. The obtained Fe2O3/g–C3N4 heterojunctions exhibited an optimal photocatalytic degradation of 94.7% for NOR, which was 1.67 and 1.28 times higher than using Fe2O3 and g–C3N4 alone, respectively. In addition, the kinetic constant of NOR removal with Fe2O3/g–C3N4 composites was about 0.6631 h−1, and NOR photo-deegradation was still 86.7% after four cycles. The enhanced photocatalytic activity may be mainly attributed to the formation of S-scheme Fe2O3/g–C3N4 heterojunctions with built-in electric fields, which were beneficial to the separation and transfer of photostimulated charge carriers. Furthermore, a possible photo-degradation mechanism of NOR for S-scheme Fe2O3/g–C3N4 heterojunctions is described.
ISSN:1420-3049
1420-3049
DOI:10.3390/molecules29215212