Electro-activation of peroxymonosulfate (PMS) has been widely investigated for the degradation of organic pollutants. Herein, we employ graphene oxide (GO)/Fe₃O₄ nanoparticles (NPs) doped into a Ti₄O₇ reactive electrochemical membrane through strong chemical bonding as the cathode to activate PMS for the degradation of 1,4-dioxane (1,4-D). The strong chemical interaction between GO, Fe₃O₄-NPs, and Ti₄O₇ via Fe–O---GO---O–Ti bonds enhances the electron-transfer efficiency and provides catalytically active sites that boost the electro-activation of PMS. As a result, the 1,4-D oxidation rate of the GO/Fe₃O₄-NPs@Ti₄O₇ REM cathode is ~3 times higher (7.21 × 10^-3 min^-1) than those of other Ti₄O₇ ceramic membranes, and ¹O₂ plays a key role (59.9%) in the degradation of 1,4-D. The ¹O₂ generation mechanism in the electro-activation process of PMS was systematically investigated, and we claimed that ¹O₂ is mainly generated from the precursors H₂O₂ and O₂^•–/HO₂^• rather than by O₂ or ^•OH, as has been reported in previous studies. A flow-through mode test in the PMS electro-activation system is firstly reported, and the 1,4-D decay efficiency is 7.1 times higher than that obtained by a flow-by mode, showing that an improved PMS mass transfer efficiency enhances the conversion to reactive oxygen species.

过氧单硫酸盐 (PMS) 的电活化已被广泛研究用于降解有机污染物。在此，我们采用通过强化学键掺杂到 Ti ₄ O ₇反应性电化学膜中的氧化石墨烯 (GO)/Fe ₃ O ₄纳米粒子 (NPs)作为阴极来激活 PMS 以降解 1,4-二氧六环 (1, 4-D)。GO、Fe ₃ O ₄ -NPs 和 Ti ₄ O _{7 之间}通过 Fe-O---GO---O-Ti 键的强化学相互作用提高了电子转移效率并提供了催化活性位点，促进了电激活 PMS。因此，GO/Fe ₃ O的 1,4-D 氧化速率₄ -NPs@Ti ₄ O ₇ REM 阴极比其他 Ti ₄ O ₇陶瓷膜高约 3 倍（7.21 × 10 ^-3 min ^-1），并且¹ O ₂在此过程中起着关键作用（59.9%） 1,4-D 的降解。的^1所Ò ₂在PMS的电活化过程产生机构被系统地研究，我们宣称¹ Ò ₂主要由前体H上产生₂ ö ₂和O ₂ ^{• -} / HO ₂ ^•而不是被O ₂或^• OH，如先前研究中所报告。首次报道了在 PMS 电活化系统中的流通模式测试，1,4-D 衰减效率比流通模式高 7.1 倍，表明改进的 PMS 传质效率提高了转化为活性氧。