A polysulfone (PSf) ultrafiltration (UF) membrane without a chemical reaction process is unable to deeply clean industrial wastewater and prone to fouling. In this work, a 30 mol % Cu-substituted brownmillerite SrCu_xCo_1–xO_3−λ (SCC37, λ ≥ 0.5)-deposited MCM-41 hybrid catalyst with 40 wt % SCC37 (SCCM-40%) was synthesized and then blended into the PSf membrane by the phase inversion method. The resultant PSf/SCCM UF membrane with catalytic oxidation and antifouling properties was tested via peroxymonosulfate (PMS) activation. As characterized by transmission electron microscopy and X-ray diffraction analyses, the SCC37 catalysts (5–10 nm) with a brownmillerite structure were evenly scattered on the surface of MCM-41. Notably, the uniform distribution of SCCM-40% in the composite membrane was contributed to the favorable degradation capacity for membrane-permeable rhodamine B (RhB) because of the massive ¹O₂ and SO₄^•– generated by PMS activation. The RhB degradation effect of the membrane remained high in the pH range of 3–9 and in the presence of humic acid. Moreover, the PSf/SCCM UF membrane demonstrated favorable long-term self-cleaning and antifouling properties after a PMS-based cleaning process. The results highlight the potential of this catalytic UF membrane in the treatment of industrial wastewater.

中文翻译：

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褐煤SrCu _x Co _{1– x} O _3−λ沉积的MCM-41促进工业废水净化的聚砜超滤膜：催化氧化和防污性能

没有化​​学反应过程的聚砜（PSf）超滤（UF）膜无法深度清洁工业废水并易于结垢。在这项工作中，一个30摩尔％的铜取代的褐闪石SrCu _x Co _{1– x} O3 _-λ合成（SCC37，λ≥0.5）沉积的具有40 wt％SCC37（SCCM-40％）的MCM-41杂化催化剂，然后通过相转化法掺入PSf膜中。通过过氧一硫酸盐（PMS）活化测试了具有催化氧化和防污性能的所得PSf / SCCM UF膜。如通过透射电子显微镜和X射线衍射分析所表征的那样，具有褐闪石结构的SCC37催化剂（5-10 nm）均匀地分散在MCM-41的表面上。值得注意的是，由于大量的¹ O ₂和SO ₄ ^•-，SCCM-40％在复合膜中的均匀分布有助于膜渗透性罗丹明B（RhB）的良好降解能力。由PMS激活生成。在3-9的pH范围内和存在腐殖酸的情况下，膜的RhB降解效果仍然很高。此外，PSf / SCCM UF膜在基于PMS的清洁过程后表现出良好的长期自清洁和防污性能。结果突出了这种催化超滤膜在工业废水处理中的潜力。