8-Hydroxyquinoline (8-HQ) was used for modification of Fe3O4 nanoparticles (NPs) and preparation of polyethersulfone (PES)-based mixed matrix membranes (MMMs) by phase inversion process. The synthesized nanoparticles were characterized by Fourier transform infrared spectroscopy (FTIR), Energy dispersive x-ray spectroscopy (EDX), and Field emission scanning electron microscopy (FESEM). The effect of different concentrations of 8-HQ/Fe3O4 NPs into the PES as membrane matrix was investigated by FESEM and atomic force microscopy (AFM). The performance of prepared membranes was evaluated by the water contact angle, pure water flux (PWF), porosity, means pore size, and salt rejection. Bovine serum albumin (BSA) solution was used to investigate the antifouling properties of fabricated membranes. The results showed a decreasing water contact angle from 68.1° for the pristine membrane to 38.3° for M5 at 0.5 wt% 8-HQ/Fe3O4 NPs. The PWF enhanced for all mixed matrix membranes compared with the pristine membrane. The highest PWF (21.5L/m2h) was measured for M4 at 0.2wt% NPs, Wwhile it was 7.1 L/m2h for pristine membrane. Salt rejection improved from 58.55% in M1 (pristine membrane) to 96% in M4 (at 0.2 wt% of 8-HQ/Fe3O4 NPs). Also, the modified membranes showed suitable antifouling property.

中文翻译：

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一种通过 8-羟基喹啉功能化 Fe3O4 纳米颗粒定制聚醚砜纳滤膜分离特性的新方法

8-羟基喹啉 (8-HQ) 用于 Fe3O4 纳米粒子 (NPs) 的改性和通过相转化工艺制备基于聚醚砜 (PES) 的混合基质膜 (MMMs)。合成的纳米粒子通过傅里叶变换红外光谱 (FTIR)、能量色散 X 射线光谱 (EDX) 和场发射扫描电子显微镜 (FESEM) 进行表征。通过 FESEM 和原子力显微镜 (AFM) 研究了不同浓度的 8-HQ/Fe3O4 NPs 对作为膜基质的 PES 的影响。制备的膜的性能通过水接触角、纯水通量 (PWF)、孔隙率、平均孔径和盐截留率进行评估。牛血清白蛋白 (BSA) 溶液用于研究制造的膜的防污性能。结果显示水接触角从 68 度下降。0.5 wt% 8-HQ/Fe3O4 NPs 时，原始膜为 1°，M5 为 38.3°。与原始膜相比，所有混合基质膜的 PWF 均增强。最高 PWF (21.5L/m2h) 是在 0.2wt% NPs 下测得的 M4，而原始膜为 7.1 L/m2h。盐截留率从 M1（原始膜）的 58.55% 提高到 M4（0.2 wt% 的 8-HQ/Fe3O4 NPs）的 96%。此外，改性膜显示出合适的防污性能。