Fe-based materials are widely used as activators in advanced oxidation processes (AOPs) for the degradation of persistent organic pollutants because of their high activity and environmental friendliness. The continuous consumption of Fe²⁺ and the generation of excessive Fe³⁺, however, lead to the formation of sludge (iron cement) and the degradation of material performances. In this work, we report MoS₂ with a self-assembled ultrathin Fe (oxy)hydroxide layer on the surface (FeOOH@MoS₂) as a highly effective and stable activator for peroxymonosulfate (PMS)-based AOPs system. The FeOOH@MoS₂/PMS system performed exceptionally for removing antibiotics from aquatic environment under both acidic and basic conditions, with function pH condition from 4 to 10. The stability of FeOOH@MoS₂ was also outstanding, with only 10.1% decrease after 5 cycles under pH 8, which is much better than conventional heterogeneous Fe-based activator for PMS based AOPs. The combination of quenching experiments, electron paramagnetic resonance (EPR) tests and surface analysis suggest that such high performance is attributed to high catalytic activity of MoS₂ as the co-catalyst and the strong interface interaction between MoS₂ and FeOOH. While the Fe²⁺_FeOOH in FeOOH effectively activate PMS to produce SO4^•− and ^•OH radical to remove antibiotics, the produced Fe³⁺_FeOOH is reduced back to Fe²⁺_FeOOH by MoS₂ co-catalyst, enabling the recycle of Fe²⁺. Our results provide a facile strategy for improving the activity and stability of heterogeneous Fe-based catalysts for AOP systems, particularly under basic environment, which contribute towards the large-scale implementation.

铁基材料由于其高活性和环境友好性，被广泛用作高级氧化工艺（AOPs）的活化剂，用于降解持久性有机污染物。然而，Fe ²⁺的不断消耗和过量Fe ³⁺的产生会导致污泥（铁水泥）的形成和材料性能的下降。在这项工作中，我们报告的MoS ₂与表面（的FeOOH @的MoS上的自组装超薄的Fe（氧）氢氧化层₂），其为高度有效的和稳定的活化剂为过氧单（PMS）为基础的高级氧化系统。FeOOH@MoS ₂/PMS系统在酸性和碱性条件下对水生环境中的抗生素去除表现出色，功能pH条件为4-10。FeOOH@MoS ₂的稳定性也非常出色，在pH 8下5个循环后仅下降10.1%，对于基于 PMS 的 AOP，这比传统的异质 Fe 基活化剂要好得多。淬火实验、电子顺磁共振（EPR）测试和表面分析的结合表明，如此高的性能归因于作为助催化剂的 MoS _{2 的}高催化活性以及MoS ₂和 FeOOH之间的强界面相互作用。而_FeOOH中的 Fe ²⁺ _FeOOH有效地激活 PMS 产生 SO4 ^•-和^• OH自由基去除抗生素，所产生的Fe ³⁺_的FeOOH降回成Fe ²⁺_的FeOOH通过的MoS ₂助催化剂，使Fe的再循环²⁺。我们的研究结果为提高用于 AOP 系统的非均相 Fe 基催化剂的活性和稳定性提供了一种简便的策略，特别是在碱性环境下，这有助于大规模实施。