MgFe₂O₄-decorated UiO-66(Zr)-NH₂ composites (MFO@UN) with different blending ratios were efficiently prepared by microwave-assisted synthesis. The results indicate that the hybrid composite exhibits high surface area and magnetic properties. Moreover, combining ferrite into the UiO-66(Zr)-NH₂ framework produces a heterojunction structure and an interfacial interaction that improves the composite’s visible-light absorption. Tetracycline removal experiments show that the MFO@UN composites exhibit excellent photodegradation performance compared with the pure ferrite and MOF. The optimal 1.5MFO@UN catalyst (molar Zr⁴⁺/MgFe₂O₄=1.5) exhibits the highest removal efficiency of approximately ca. ∼92% after 90 min of pre-adsorption and 160 min of visible-light illumination. The photocatalytic mechanism investigation reveals that photo-induced holes (h⁺) and ·OH radicals predominantly govern the photodegradation process. Notably, the separation and immigration of the photo-induced holes and electrons improve due to the heterojunction structures that form between the two semiconductors. In addition, the prepared catalysts are highly recoverable and renewable. These findings suggest that the microwave-derived MgFe₂O₄@UiO-66(Zr)-NH₂ catalyst may be a promising candidate for treating organic contaminants in wastewater.

采用微波辅助合成法高效制备了不同掺合比的MgFe ₂ O ₄修饰的UiO-66(Zr)-NH _{2复合材料(MFO@UN)。}结果表明，杂化复合材料表现出高表面积和磁性。此外，将铁氧体结合到 UiO-66(Zr)-NH ₂骨架中会产生异质结结构和界面相互作用，从而提高复合材料的可见光吸收。四环素去除实验表明，与纯铁氧体和 MOF 相比，MFO@UN 复合材料表现出优异的光降解性能。最佳1.5MFO@UN催化剂（摩尔Zr ⁴⁺ /MgFe ₂ O ₄=1.5) 表现出最高的去除效率，约为ca。在预吸附 90 分钟和可见光照射 160 分钟后约为 92%。光催化机理研究表明，光致空穴（h ⁺）和·OH 自由基主要控制光降解过程。值得注意的是，由于两种半导体之间形成的异质结结构，光致空穴和电子的分离和迁移得到改善。此外，制备的催化剂具有高度可回收性和可再生性。这些发现表明，微波衍生的 MgFe ₂ O ₄ @UiO-66(Zr)-NH ₂催化剂可能是处理废水中有机污染物的有希望的候选者。