| Autor: |
Khen, Adel, Hadjersi, Toufik, Brihi, Noureddine, Ifires, Madjid, Moulai, Fatsah, Djermoune, Atmane, Manseri, Amar |
| Zdroj: |
Reaction Kinetics, Mechanisms and Catalysis; June 2024, Vol. 137 Issue: 3 p1805-1822, 18p |
| Abstrakt: |
This work focuses on the synthesis of Bi2Fe4O9/Ag3PO4composites with different Bi2Fe4O9contents to remove the Rhodamine B (RhB) dye pollutant. The obtained composites were characterized by scanning electron microscopy, energy-dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy, Photoluminescence and UV–Vis spectrophotometry. The 5Bi2Fe4O9/Ag3PO4catalyst with 5% Bi2Fe4O9loading exhibited the high photocatalytic performance with degradation efficiency of 97.91% after 12 min under visible light irradiation. Photoluminescence and UV–Vis analysis showed that 5Bi2Fe4O9/Ag3PO4has the best separation of photogenerated e−/h+pairs and light absorption. The catalyst exhibited a good selectivity toward tartrazine and methylene blue. The cycling experiment revealed that 5Bi2Fe4O9/Ag3PO4catalyst has a good stability after 4 runs. The results of trapping radical experiments indicated that h+charge carriers were the main species involved in the RhB photodegradation process which was supported by a Z-scheme electron transfer mechanism. |
| Databáze: |
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