Novel magnetic MgFe2O4/CAU-17 composites with improved photocatalytic degradation of the antibiotic tetracycline under natural sunlight

IF 4.2 Q2 CHEMISTRY, MULTIDISCIPLINARY

Results in Chemistry Pub Date : 2025-09-01 DOI:10.1016/j.rechem.2025.102666

Thi Minh Nguyet Bui , The Ky Vo , Tran Minh Quang , Van Hung Nguyen , Van Minh Truong

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Abstract

The demand for effective structures that harness natural sunlight for photocatalytic water remediation remains a significant challenge. Here, hybrid MgFe₂O₄/CAU-17 (MFOCAU) materials with varied compositions were prepared by incorporating MgFe₂O₄ into Bi-MOF CAU-17 during the MOF synthesis. Combining CAU-17 frameworks with ferrite nanocrystallites yielded heterostructures featuring a compatible bandgap combination, enhancing light absorption and improving the separation and migration efficiency of charge carriers. Under natural sunlight irradiation, the MFOCAU catalysts achieved a removal efficiency of approximately 91 % for tetracycline (TC), surpassing pure ferrite and CAU-17. Mechanism assessments, including radical scavenger tests and HPLC-LC/MS measurements, revealed the role of reactive species and the photodegradation pathways of TC. Notably, the produced MgFe₂O₄/CAU-17 exhibits magnetic properties, allowing for convenient recovery from the suspension using a magnet. The findings suggest that combining ferrite and MOF could be a potential strategy for producing effective materials for photocatalytic water decontamination.

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新型磁性MgFe2O4/CAU-17复合材料在自然光照下光催化降解抗生素四环素

对利用自然阳光进行光催化水修复的有效结构的需求仍然是一个重大挑战。在MOF合成过程中，将MgFe2O4掺入Bi-MOF CAU-17中，制备了不同成分的MgFe2O4/CAU-17杂化材料。将cac -17框架与铁氧体纳米晶结合得到具有兼容带隙组合的异质结构，增强了光吸收，提高了载流子的分离和迁移效率。在自然阳光照射下，MFOCAU催化剂对四环素（TC）的去除率约为91%，超过了纯铁氧体和cac -17。机制评估，包括自由基清除剂测试和HPLC-LC/MS测量，揭示了反应物质的作用和TC的光降解途径。值得注意的是，制备的MgFe2O4/CAU-17具有磁性，可以方便地使用磁铁从悬浮液中回收。研究结果表明，将铁氧体与MOF结合可能是一种生产光催化水净化有效材料的潜在策略。

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