In this study, graphene oxide/iron oxide (GO/Fe₃O₄) nanohybrids were successfully synthesized through bonding (3-Aminopropyl) triethoxysilane(APTES)-functionalized Fe₃O₄ with GO nanosheets and then incorporated into polyethersulfone (PES) polymer matrix to fabricate ultrafiltration (UF) mixed matrix membrane (MMM) (GO/Fe₃O₄/PES) via phase inversion method. A magnetic field of about 0.1 Tesla was induced during the casting process of the membrane solution to fabricate the magnetized GO/Fe₃O₄/PES membrane (M-GO/Fe₃O₄/PES) and the magnetic field effect on the membrane characteristics was studied. For better comparison, the Fe₃O₄/PES membranes with and without induction of magnetic field were also fabricated and compared. It was found that the M-GO/Fe₃O₄/PES membrane with permeance of 252 L/m².h.bar and water contact angle (WCA) of 53.9° shows the best performance. As compared with the neat PES membrane, WCA of the M-GO/Fe₃O₄/PES membrane decreased by 35.0% and its pure water flux (PWF) increased up to 76.2%. The M-GO/Fe₃O₄/PES membrane showed high rejection towards bovine serum albumin (BSA) of about 92.0% and flux recovery ratio (FRR) of about 87.9%. The reduction in total fouling from 84.35% for the neat PES membrane to 41.50% for the M-GO/Fe₃O₄/PES membrane showed the effectiveness of the proposed membrane fabrication method. This membrane can be used as support for high quality nanofiltration (NF) and reverse osmosis (RO) membranes, effectively.

在这项研究中，通过（3-氨基丙基）三乙氧基硅烷（APTES）官能化的Fe ₃ O ₄与GO纳米片的键合成功地合成了氧化石墨烯/氧化铁（GO / Fe ₃ O ₄）纳米杂化物，然后将其掺入聚醚砜（PES）聚合物中通过相转化法制备超滤（UF）混合基质膜（MMM）（GO / Fe ₃ O ₄ / PES）。在膜溶液的浇铸过程中会感应到约0.1 Tesla的磁场，以制造磁化的GO / Fe ₃ O ₄ / PES膜（M-GO / Fe ₃ O ₄/ PES）和磁场对膜特性的影响。为了更好地进行比较，还制作并比较了带有和不带有磁场感应的Fe ₃ O ₄ / PES膜。已经发现，渗透率为252L / m ^2· h·bar且水接触角（WCA）为53.9°的M-GO / Fe ₃ O ₄ / PES膜显示出最佳性能。与纯PES膜相比，M-GO / Fe ₃ O ₄ / PES膜的WCA下降了35.0％，其纯水通量（PWF）上升了76.2％。M-GO / Fe ₃ O ₄ / PES膜对牛血清白蛋白（BSA）的排斥率很高，约为92.0％，通量回收率（FRR）约为87.9％。总污垢从纯PES膜的84.35％降低到M-GO / Fe ₃ O ₄ / PES膜的41.50％，表明了所提出的膜制造方法的有效性。该膜可以有效地用作高质量纳滤（NF）和反渗透（RO）膜的支撑物。