Magnetic mixed‐matrix membranes (MMMs) are fabricated using polysulfone (PSf) and iron oxide (Fe) for O₂/N₂ separation. The effects of Fe nanoparticle size and content on the performance of the membranes are investigated using a novel gas permeation unit in the presence of various magnetic fields. The results indicate that the O₂ permeation is improved by adding Fe nanoparticles into the PSf matrix regardless of the particle size. Furthermore, the selectivity of PSf and PSf‐Fe membranes is considerably enhanced by applying a magnetic field during the permeation experiments. The O₂ permeability and O₂/N₂ selectivity of PSf‐Fe50 MMMs in the presence of a magnetic field are higher than those of neat PSf membranes.

中文翻译：

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粒度对聚砜磁性膜用于O2 / N2分离性能的影响

使用聚砜（PSf）和氧化铁（Fe）分离O ₂ / N ₂制备磁性混合基质膜（MMM）。在存在各种磁场的情况下，使用新型的气体渗透装置研究了铁纳米颗粒尺寸和含量对膜性能的影响。结果表明，无论粒径如何，通过将Fe纳米颗粒添加到PSf基质中都可以改善O _2的渗透性。此外，通过在渗透实验中施加磁场，可以大大提高PSf和PSf-Fe膜的选择性。O _2的渗透性和O ₂ / N ₂ 在磁场中PSf-Fe50 MMM的选择性高于纯PSf膜的选择性。