Abstract In this work, para-amino benzoate ferroxane nanoparticle (PABFNP) was employed as a key functional nanoparticle to improve the polyethersulfone (PES) nanofiltration membrane, and PABFNPs blended with PES (PES/PABFNPs) nanofiltration membranes were thus prepared via phase inversion method. PABFNPs may have good compatibility with PES polymer due to intermolecular attractions including hydrogen bonding between −OH and –NH2 of PABFNPs with S O of PES. Therefore, the stable bonding between hydrophilic PABFNPs and PES leads to PES nanofiltration membrane of exceptionally high performance. The effects of PABFNPs blending ratio on the chemical structure, hydrophilicity, surface morphology, zeta potential, and antifouling behavior of the membrane samples were evaluated. The salt rejection of the PES/PABFNPs membranes was also examined. With an increase in PABFNPs blending ratio up to 0.25 wt.% with PABFNP0.25 membrane, surface hydrophilicity and pure water flux were strongly increased and then decreased owing to the agglomeration of PABFNPs in the PES matrix. PABFNP0.25 membrane was found to have the lowest irreversible fouling ratio of 1 %, the highest flux recovery ratio value of 99 % and excellent long-term pH stability. The pure water flux of PABFNP0.25 membrane was 64.2 kg/m2h with a high rejection for dye (99 % for Direct Red 16 and 98.42 % Methylene blue). Moreover, the algal dye rejection test was carried out to investigate the rejection performance of the PES/PABFNPs membranes towards the mixture of pollutants. As a result, by addition of PABFNPs at lower blending ratio, the membrane with satisfying antifouling behavior, long-term pH stability, and nanofiltration performance was prepared.

中文翻译：

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使用对氨基苯甲酸亚铁氧烷纳米颗粒开发高通量纳滤膜以增强防污性能和染料去除

摘要 本研究以对氨基苯甲酸铁氧烷纳米粒子 (PABFNP) 作为关键功能纳米粒子对聚醚砜 (PES) 纳滤膜进行了改进，通过相转化法制备了 PABFNPs 与 PES (PES/PABFNPs) 纳滤膜. 由于PABFNPs的-OH和-NH2与PES的SO之间的氢键等分子间吸引力，PABFNPs可能与PES聚合物具有良好的相容性。因此，亲水性 PABFNPs 和 PES 之间的稳定结合导致 PES 纳滤膜具有异常高性能。评估了 PABFNPs 混合比例对膜样品的化学结构、亲水性、表面形貌、zeta 电位和防污性能的影响。还检查了 PES/PABFNPs 膜的盐截留率。随着 PABFNPs 与 PABFNP0.25 膜的混合比例增加至 0.25 wt.%，由于 PABFNPs 在 PES 基质中的团聚，表面亲水性和纯水通量显着增加然后下降。发现 PABFNP0.25 膜具有 1% 的最低不可逆污染率、99% 的最高通量恢复率值和出色的长期 pH 稳定性。PABFNP0.25 膜的纯水通量为 64.2 kg/m2h，染料截留率高（直接红 16 为 99%，亚甲蓝为 98.42%）。此外，还进行了藻类染料截留试验以研究 PES/PABFNPs 膜对污染物混合物的截留性能。因此，通过以较低的混合比例添加 PABFNPs，膜具有令人满意的防污性能、长期 pH 稳定性、