In this work, MnS/Fe-MOF composites were synthesized by a mild one-pot method and employed as efficient activators of peroxymonosulfate (PMS) for sulfadiazine (SDZ) removal in water. The surface morphology and structure of MnS/Fe-MOF was characterized by scanning electron microscopy, transmission electron microscopy, X-ray diffraction, flourier transform infrared spectroscopy and X-ray photoelectron spectroscopy. As expected, the as-prepared MnS10/Fe-MOF presented complete SDZ degradation within 30 min in the presence of 0.2 g/L catalyst and 0.6 mM PMS, which was better than those with Co₂S/Fe-MOF, CoS/Fe-MOF and MoS₂/Fe-MOF as well as other reported catalysts. The effects of experimental conditions, co-existing anions and humic acid on catalytic performance of MnS/Fe-MOF were also investigated. Moreover, OH, SO₄⁻, O₂⁻ and ¹O₂ were evidenced to participate in the activation process using quenching experiments and electro-spin resonance spectrometer. The results of XPS analysis of MnS10/Fe-MOF before and after the reaction confirmed the synergistic effects between multivalent Mn, Fe and S species in MnS/Fe-MOF, which was beneficial for the rapid Mⁿ⁺¹/Mⁿ⁺ (M stands for Fe and Mn) recycling. This is the first work expounding the facile synthesis method of MnS/Fe-MOF composites and its synergistic mechanism as an efficient PMS activator for the degradation of antibiotics.

在这项工作中，MnS/Fe-MOF 复合材料通过温和的一锅法合成，并用作过氧单硫酸盐 (PMS) 的有效活化剂，用于去除水中的磺胺嘧啶 (SDZ)。采用扫描电子显微镜、透射电子显微镜、X射线衍射、傅立叶变换红外光谱和X射线光电子能谱对MnS/Fe-MOF的表面形貌和结构进行了表征。正如预期的那样，所制备的 MnS10/Fe-MOF 在 0.2 g/L 催化剂和 0.6 mM PMS 存在下在 30 分钟内呈现完全 SDZ 降解，优于 Co ₂ S/Fe-MOF、CoS/Fe。 -MOF 和 MoS ₂/Fe-MOF 以及其他报道的催化剂。还研究了实验条件、共存阴离子和腐殖酸对MnS/Fe-MOF催化性能的影响。此外，使用淬火实验和电自旋共振光谱仪证明了OH、SO ₄ ^-、O ₂ ^-和¹ O ₂参与了活化过程。反应前后 MnS10/Fe-MOF 的 XPS 分析结果证实了 MnS/Fe-MOF 中多价 Mn、Fe 和 S 的协同作用，有利于快速 M ⁿ⁺¹ /M ⁿ⁺（M 代表 Fe 和 Mn）回收。这是第一个阐述 MnS/Fe-MOF 复合材料的简便合成方法及其作为高效 PMS 活化剂降解抗生素的协同机制的工作。