Photo-Fenton membranes exhibit exceptional self-cleaning and anti-fouling performances, making them promising for oil/water separation applications. However, the practical use of photo-Fenton catalytic reaction is limited as it requires an acidic environment. In this study, a polyethersulfone (PES)/Fe3S4@Al2O3 membrane was fabricated using nonsolvent-induced phase separation. This resulted in a photo-Fenton separation membrane with a broad pH range applicability, leveraging the high catalytic activity of Fe3S4 and the unique Lewis acid properties of Al2O3. The findings indicate that the optimized membranes can achieve a separation efficiency of over 99.3 % for various oil/water emulsions. The membrane demonstrates exceptional self-cleaning performance and stability, maintaining a separation efficiency of over 99 % even after 10 cycles of oil/water emulsion separation. Additionally, the membrane exhibited a catalytic degradation efficiency of 100 % for MB, RhB and MO under visible light in pH range of 2–12. The high separation efficiency, stability, self-cleaning performance, and wide pH range of these membranes make them promising candidates for long-term oily wastewater purification.

中文翻译：

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PES/Fe3S4@Al2O3 自清洁膜，具有快速催化功能，可实现有效的乳液分离和染料降解


Photo-Fenton 膜表现出卓越的自清洁和防污性能，使其有望用于油/水分离应用。然而，光-芬顿催化反应的实际应用是有限的，因为它需要酸性环境。在本研究中，使用非溶剂诱导相分离制备了聚醚砜 （PES）/Fe3S4@Al2O3 膜。这产生了具有广泛 pH 范围适用性的光芬顿分离膜，利用 Fe3S4 的高催化活性和 Al2O3 独特的路易斯酸特性。结果表明，优化后的膜对各种油/水乳液的分离效率可达 99.3% 以上。该膜表现出卓越的自清洁性能和稳定性，即使在油/水乳液分离 10 次循环后仍能保持超过 99% 的分离效率。此外，在 pH 值为 2-12 的可见光下，该膜对 MB、RhB 和 MO 的催化降解效率为 100%。这些膜的高分离效率、稳定性、自清洁性能和宽 pH 值范围使其成为长期含油废水净化的有希望的候选者。