Enhanced Degradation of Norfloxacin Under Visible Light by S-Scheme Fe<sub>2</sub>O<sub>3</sub>/g–C<sub>3</sub>N<sub>4</sub> Heterojunctions
S-scheme Fe<sub>2</sub>O<sub>3</sub>/g–C<sub>3</sub>N<sub>4</sub> heterojunctions were successfully fabricated by the ultrasonic assistance method to remove norfloxacin (NOR) under visible light irradiation. The synthesized catalysts were well studied...
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| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2024-11-01
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| Series: | Molecules |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1420-3049/29/21/5212 |
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| Summary: | S-scheme Fe<sub>2</sub>O<sub>3</sub>/g–C<sub>3</sub>N<sub>4</sub> 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 Fe<sub>2</sub>O<sub>3</sub>/g–C<sub>3</sub>N<sub>4</sub> heterojunctions exhibited an optimal photocatalytic degradation of 94.7% for NOR, which was 1.67 and 1.28 times higher than using Fe<sub>2</sub>O<sub>3</sub> and g–C<sub>3</sub>N<sub>4</sub> alone, respectively. In addition, the kinetic constant of NOR removal with Fe<sub>2</sub>O<sub>3</sub>/g–C<sub>3</sub>N<sub>4</sub> composites was about 0.6631 h<sup>−1</sup>, 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 Fe<sub>2</sub>O<sub>3</sub>/g–C<sub>3</sub>N<sub>4</sub> 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 Fe<sub>2</sub>O<sub>3</sub>/g–C<sub>3</sub>N<sub>4</sub> heterojunctions is described. |
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| ISSN: | 1420-3049 |