Magnetic MgFe2O4/MIL-88A catalyst for photo-Fenton sulfamethoxazole decomposition under visible light

• Published in: Separation and purification technology 2022-11, Vol.301, p.121965, Article 121965
• Main Authors: Shi, Ke-Xin, Qiu, Fuguo, Wang, Peng, Li, Haiyan, Wang, Chong-Chen
• Format: Article
• Language: English
• Subjects: MgFe2O4; MIL-88A; Oxidation; Photo-Fenton; Sulfamethoxazole
• ISSN: 1383-5866; 1873-3794
• DOI: 10.1016/j.seppur.2022.121965

[Display omitted] •Magnetic MgFe2O4/MIL-88A composite is manufactured through ball-milling method.•MgFe2O4 is introduced for rapid recovery and liquid–solid separation.•Formation of type II heterojunctions accelerated the reaction.•MgFe2O4/MIL-88A composite showed excellent degrade performance for sulfamethoxazole.•The good stability and reusability indicated its practical application. Series magnetic MgFe2O4/MIL-88A catalysts (MFxMy) were fabricated by a simple ball-milling method, which were applied to degrade sulfamethoxazole (SMX) antibiotic via photo-Fenton process under low power visible light. The influences of initial pH, H2O2 concentration, and co-existing inorganic anions on SMX degradation were explored. The results revealed that the optimal MgFe2O4/MIL-88A (MF140M60) demonstrated excellent photo-Fenton catalysis activity, in which ca. 99.8% of SMX could be degraded within 20.0 min. The outstanding catalytic activity of MgFe2O4/MIL-88A (MF140M60) can be ascribed to the effective transfer of charge carriers between MgFe2O4 and MIL-88A. As well, the optimal MgFe2O4/MIL-88A (MF140M60) catalyst possessed good stability and recyclability.