Abstract An imidazolium ionic liquid (1-aminoethyl-3-methylimidazolium bromide, AMIB) was exploited to prepare thin film composite membranes (TFCMs) exhibiting high water permeability, salt rejection, antibiotics separation and antibacterial properties. Polyamide TFCMs were prepared by “piperzine ~ trimesoyl chloride” (PIP-TMC) interfacial polymerization. AMIB molecules were anchored to membrane surface through “acyl chloride ~ amine” amidation. Salt rejection and water flux of the modified membrane (PIP-TMC-AMIB) was 95 ± 1% (RNa2SO4) and 135 ± 5 L m−2 h−1 at 6 bar pressure. Thus the permeance of the modified TFCM is ~ 4 times as high as that of lab-made pristine PIP-TMC TFCM. The PIP-TMC-AMIB membrane shows high water permeance (~ 25 Lm−2 h−1 bar) and effective rejection (>90%) toward antibiotics such as 50 ppm ciprofloxacin, tetracycline, oxytetracycline, levofloxacin and erythrocin. In addition, the membrane exhibits effective separation of antibiotics/sodium chloride mixtures, and highly improved antibacterial properties by killing 99% E. coli colonies.

中文翻译：

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咪唑鎓离子液体表面改性高性能聚酰胺纳滤膜

摘要 利用咪唑鎓离子液体（1-氨基乙基-3-甲基咪唑鎓溴化物，AMIB）制备具有高透水性、脱盐性、抗生素分离和抗菌性能的薄膜复合膜（TFCMs）。聚酰胺TFCMs是通过“哌嗪~均苯三甲酰氯”（PIP-TMC）界面聚合制备的。AMIB 分子通过“酰氯～胺”酰胺化作用固定在膜表面。在 6 bar 压力下，改性膜 (PIP-TMC-AMIB) 的盐截留率和水通量为 95 ± 1% (RNA2SO4) 和 135 ± 5 L m-2 h-1。因此，改良的 TFCM 的渗透性是实验室制造的原始 PIP-TMC TFCM 的 4 倍。PIP-TMC-AMIB 膜显示出高透水性 (~ 25 Lm-2 h-1 bar) 和对抗生素的有效排斥 (>90%)，如 50 ppm 环丙沙星、四环素、土霉素、左氧氟沙星和红霉素。此外，该膜表现出对抗生素/氯化钠混合物的有效分离，并通过杀死 99% 的大肠杆菌菌落而大大提高了抗菌性能。