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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MDPI AG
2024-11-01
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| author | Guang Lu Wei Li Zheng Li Guizhou Gu Qiuju Han Jiling Liang Zhen Chen |
| author_facet | Guang Lu Wei Li Zheng Li Guizhou Gu Qiuju Han Jiling Liang Zhen Chen |
| author_sort | Guang Lu |
| collection | DOAJ |
| description | 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. |
| format | Article |
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| institution | Kabale University |
| issn | 1420-3049 |
| language | English |
| publishDate | 2024-11-01 |
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| series | Molecules |
| spelling | doaj-art-3acaf7af72ad40d79ab43d55470768c52024-11-08T14:38:42ZengMDPI AGMolecules1420-30492024-11-012921521210.3390/molecules29215212Enhanced 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> HeterojunctionsGuang Lu0Wei Li1Zheng Li2Guizhou Gu3Qiuju Han4Jiling Liang5Zhen Chen6School of Civil Engineering, Liaoning Petrochemical University, Fushun 113001, ChinaSchool of Environmental & Safety Engineering, Liaoning Petrochemical University, Fushun 113001, ChinaSchool of Environmental & Safety Engineering, Liaoning Petrochemical University, Fushun 113001, ChinaSchool of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, ChinaSchool of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, ChinaSchool of Civil Engineering, Liaoning Petrochemical University, Fushun 113001, ChinaSchool of Environmental and Chemical Engineering, Shenyang Ligong University, Shenyang 110159, ChinaS-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.https://www.mdpi.com/1420-3049/29/21/5212Fe<sub>2</sub>O<sub>3</sub>g–C<sub>3</sub>N<sub>4</sub>heterojunctionphotocatalytic degradationNOR |
| spellingShingle | Guang Lu Wei Li Zheng Li Guizhou Gu Qiuju Han Jiling Liang Zhen Chen 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 Molecules Fe<sub>2</sub>O<sub>3</sub> g–C<sub>3</sub>N<sub>4</sub> heterojunction photocatalytic degradation NOR |
| title | 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 |
| title_full | 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 |
| title_fullStr | 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 |
| title_full_unstemmed | 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 |
| title_short | 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 |
| title_sort | 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 |
| topic | Fe<sub>2</sub>O<sub>3</sub> g–C<sub>3</sub>N<sub>4</sub> heterojunction photocatalytic degradation NOR |
| url | https://www.mdpi.com/1420-3049/29/21/5212 |
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