Processes that ensure the rapid degradation of organic pollutants are urgently required in wastewater treatment. Heterogeneous catalysts in sulfate radical-based advanced oxidation processes (SR-AOPs) have a low catalytic efficiency, long reaction time, and are difficult to recover. Rationally designed magnetically separable Fe₃O₄-CoS₂-0.4 that was rich in sulfur and oxygen vacancies was used as an efficient catalyst for peroxymonosulfate (PMS) activation to rapidly degrade various dyes and antibiotics. The synergistic effect of Fe, Co and S on the activation of PMS and the sulfur and oxygen vacancy generated by the composite greatly promoted the catalytic performance, in which the singlet oxygen (¹O₂) generated was the main active species in the degradation process. Fe₃O₄-CoS₂-0.4 is easily separated from the reaction solution by magnets and shows good recyclability and stability in removing MB, achieving removal rates of 100%, 100% and 96.07% in the first, second and third cycles, respectively. Fe₃O₄-modified CoS₂ also greatly reduces the ion leaching of cobalt ions and the secondary pollution. In addition, for several other typical dyes and antibiotics (metronidazole, phenol, tetracycline, levofloxacin, crystal violet, malachite green, and rhodamine B), high removal rates (100%, 100%, 88.3%, 90.3%, 100%, 100%, and 100%, respectively) were achieved in a short time.

废水处理迫切需要确保有机污染物快速降解的工艺。基于硫酸根的高级氧化过程（SR-AOP）中的多相催化剂催化效率低、反应时间长且难以回收。合理设计的富含硫和氧空位的磁分离Fe ₃ O ₄ -CoS _{2 -0.4 被用作过一硫酸盐(PMS)活化的有效催化剂，以快速降解各种染料和抗生素。}Fe、Co和S对PMS活化的协同作用以及复合物产生的硫和氧空位极大地促进了催化性能，其中单线态氧（¹ O₂）降解过程中生成的主要活性物种。Fe ₃ O ₄ -CoS ₂ -0.4 很容易通过磁力从反应溶液中分离出来，并且在去除MB方面表现出良好的回收性和稳定性，在第一、第二和第三循环中分别实现了100%、100%和96.07%的去除率。Fe ₃ O ₄改性CoS ₂还大大减少了钴离子的离子浸出和二次污染。此外，对于其他几种典型的染料和抗生素（甲硝唑、苯酚、四环素、左氧氟沙星、结晶紫、孔雀石绿和罗丹明 B)，在短时间内实现了高去除率（分别为 100%、100%、88.3%、90.3%、100%、100% 和 100%）时间。