A novel magnetic Fe₃O₄@SiO₂@Ag₂WO₄@Ag₂S core/shell heterostructure was synthesized through a multistep route. The photocatalytic degradation efficiency of Fe₃O₄@SiO₂@Ag₂WO₄@Ag₂S photocatalysts has been investigated through batch photocatalytic degradation experiments of methylene blue (M.B) dye under visible light irradiation. The synthesized photocatalysts were characterized using different techniques like XRD, VSM, UV-DRS, FE-SEM, and TEM. It can be revealed that the Fe₃O₄@SiO₂@Ag₂WO₄@Ag₂S sample shows enhanced photocatalytic degradation efficiency (99.9% after 60 min of irradiation time) than that of Fe₃O₄@SiO₂@Ag₂WO₄. This enhanced photocatalytic degradation efficiency of Fe₃O₄@SiO₂@Ag₂WO₄@Ag₂S due to the synergistic effects of Fe₃O₄@SiO₂ core, Ag₂WO₄, and Ag₂S species. In addition, the narrow bandgap energy of the final Fe₃O₄@SiO₂@Ag₂WO₄@Ag₂S heterostructure. The effects of different parameters, including photocatalyst dose, initial M.B concentration, initial pH, and hydrogen peroxide concentration, were also investigated. The reaction kinetics of M.B dye degradation was investigated to better compare the photocatalytic removal efficiency of all photocatalysts. The recyclability study showed that reusable magnetic photocatalysts are highly stable and can be used to remove a wide range of dye pollutants from wastewater.

通过多步合成了一种新型磁性Fe ₃ O ₄ @SiO ₂ @Ag ₂ WO ₄ @Ag ₂ S核/壳异质结构。Fe ₃ O ₄ @SiO ₂ @Ag ₂ WO ₄ @Ag ₂ S 光催化剂的光催化降解效率通过亚甲基蓝（MB）染料在可见光照射下的批量光催化降解实验进行了研究。合成的光催化剂使用不同的技术进行表征，如 XRD、VSM、UV-DRS、FE-SEM 和 TEM。可以看出，Fe ₃ O ₄ @SiO₂ @Ag ₂ WO ₄ @Ag ₂ S 样品显示出比 Fe ₃ O ₄ @SiO ₂ @Ag ₂ WO ₄更高的光催化降解效率（照射 60 分钟后为 99.9%）。由于 Fe ₃ O ₄ @SiO ₂核、Ag ₂ WO ₄和 Ag ₂的协同作用，这种增强的 Fe ₃ O ₄ @SiO ₂ @Ag ₂ WO ₄ @Ag ₂ S 的光催化降解效率S种。此外，最终的 Fe ₃ O ₄ @SiO ₂ @Ag ₂ WO ₄ @Ag ₂ S 异质结构的窄带隙能量。还研究了不同参数的影响，包括光催化剂剂量、初始 MB 浓度、初始 pH 值和过氧化氢浓度。研究了 MB 染料降解的反应动力学，以更好地比较所有光催化剂的光催化去除效率。可回收性研究表明，可重复使用的磁性光催化剂高度稳定，可用于去除废水中的多种染料污染物。