Abstract A hybrid thin film composite membrane with high flux and enhanced antifouling performance was prepared by incorporating attapulgite (ATP) nanorods using the interfacial polymerization reaction of piperazine (PIP) and trimesoyl chloride (TMC). Fourier transform infrared spectroscopy (FTIR) confirmed the presence of ATP nanorods in the polyamide (PA) layer. The surface morphology and hydrophilicity of the thin film composite membranes were probed by scanning electron microscopy (SEM) and water contact angle goniometer. The existence of attapulgite nanorods in the polyamide layer increased the membrane hydrophilicity and the water flux up to 229.5 L m −2 h −1 MPa −1 , which was 1.3-fold higher than PA membrane. Furthermore, the ATP-modified nanofiltration membrane kept a high salt rejection of 92% for Na 2 SO 4 and dye rejection of 94.7% for Orange GII. Furthermore, the attapulgite nanorods also endowed the polyamide nanofiltration membrane with enhanced antifouling performance, a remarkably higher flux recovery ratio than the pristine polyamide membrane for various kinds of foulants including bovine serum albumin, humic acid and sodium alginate.

中文翻译：

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界面聚合过程中掺入凹凸棒石纳米棒制备复合纳滤膜具有高水通量和防污性能

摘要 通过哌嗪（PIP）和均苯三甲酰氯（TMC）的界面聚合反应，掺入凹凸棒石（ATP）纳米棒，制备了具有高通量和增强防污性能的杂化薄膜复合膜。傅里叶变换红外光谱 (FTIR) 证实了聚酰胺 (PA) 层中存在 ATP 纳米棒。通过扫描电子显微镜（SEM）和水接触角测角仪探测薄膜复合膜的表面形貌和亲水性。聚酰胺层中凹凸棒石纳米棒的存在使膜的亲水性和水通量增加到229.5 L m -2 h -1 MPa -1 ，比PA 膜高1.3 倍。此外，ATP 改性的纳滤膜对 Na 2 SO 4 保持了 92% 的高盐截留率和 94 的染料截留率。橙色 GII 为 7%。此外，凹凸棒纳米棒还赋予聚酰胺纳滤膜增强的防污性能，对于牛血清白蛋白、腐植酸和海藻酸钠等各种污染物，其通量回收率明显高于原始聚酰胺膜。