The novel MnFe₂O₄/CeO₂/SnS₂ (1:0.2:0.5, 1:0.2:1, 1:0.2:1.5) nano-photocatalysts with magnetic recyclability were prepared via a facile hydrothermal route. MnFe₂O₄ and CeO₂ nanoparticles are decorated onto SnS₂ flowers to fabricate a MnFe₂O₄/CeO₂/SnS₂ ternary heterojunction. SnS₂ is an excellent connector between MnFe₂O₄ and CeO₂ in synthesized MnFe₂O₄/CeO₂/SnS₂ composite with a suitable band gap to accelerate methylene blue (MB) of photodegradation, which is attributed to its highly efficient separation of photogenerated electron-hole pairs. Compared with pure MnFe₂O₄, the photo-Fenton degradation of the MnFe₂O₄/CeO₂/SnS₂ composites significantly enhance in the presence of H₂O₂. Notably, the MnFe₂O₄/CeO₂/SnS₂ (1:0.2:1) composite displays a slightly decreased charge-transfer resistance and an increased photocurrent density with good cycling stability after five runs, exhibiting the excellent photocatalytic and photo-Fenton performance under simulated sunlight. Consequently, the photo-Fenton mechanism of MnFe₂O₄/CeO₂/SnS₂ is explained on the basis of coexistence of Mn²⁺/Mn³⁺ and Fe³⁺/Fe²⁺ redox couples. Meanwhile, OH is the main active specie.

通过一种简便的水热法制备了具有磁性可回收性的新型MnFe ₂ O ₄ / CeO ₂ / SnS ₂（1：0.2：0.5，1 ：0.2：1，1：0.2：1.5）纳米光催化剂。将MnFe ₂ O ₄和CeO ₂纳米粒子装饰在SnS ₂花上，以制造MnFe ₂ O ₄ / CeO ₂ / SnS ₂三元异质结。SnS ₂是合成的MnFe ₂ O ₄ / CeO _2中的MnFe ₂ O ₄和CeO ₂之间的优良连接体。/ SnS ₂复合材料具有合适的带隙以促进亚甲基蓝（MB）的光降解，这归因于其对光生电子-空穴对的高效分离。与纯MnFe ₂ O ₄相比，在存在H ₂ O ₂的情况下，MnFe ₂ O ₄ / CeO ₂ / SnS ₂复合材料的光芬顿降解显着增强。值得注意的是，MnFe ₂ O ₄ / CeO ₂ / SnS ₂（1：0.2：1）复合材料在五次运行后显示出略微降低的电荷转移电阻和增加的光电流密度，并具有良好的循环稳定性，在模拟阳光下表现出优异的光催化和光芬顿性能。因此，基于Mn ²⁺ / Mn ³⁺和Fe ³⁺ / Fe ²⁺氧化还原对的共存，说明了MnFe ₂ O ₄ / CeO ₂ / SnS ₂的光芬顿机理。同时，OH是主要的活性物质。