材料科学
纳滤
化学工程
微观结构
海水淡化
聚酯纤维
膜
水溶液
微型多孔材料
薄膜复合膜
反渗透
色谱法
复合材料
化学
有机化学
工程类
生物化学
作者
Yunxiang Bai,Beibei Liu,Jiachen Li,Minghui Li,Zheng Yao,Liangliang Dong,Dewei Rao,Peng Zhang,Xingzhong Cao,Luis Francisco Villalobos,chunfang Zhang,Quan‐Fu An,Menachem Elimelech
出处
期刊:Science Advances
[American Association for the Advancement of Science (AAAS)]
日期:2023-05-05
卷期号:9 (18)
被引量:24
标识
DOI:10.1126/sciadv.adg6134
摘要
The successful implementation of thin-film composite membranes (TFCM) for challenging solute-solute separations in the pharmaceutical industry requires a fine control over the microstructure (size, distribution, and connectivity of the free-volume elements) and thickness of the selective layer. For example, desalinating antibiotic streams requires highly interconnected free-volume elements of the right size to block antibiotics but allow the passage of salt ions and water. Here, we introduce stevioside, a plant-derived contorted glycoside, as a promising aqueous phase monomer for optimizing the microstructure of TFCM made via interfacial polymerization. The low diffusion rate and moderate reactivity of stevioside, together with its nonplanar and distorted conformation, produced thin selective layers with an ideal microporosity for antibiotic desalination. For example, an optimized 18-nm membrane exhibited an unprecedented combination of high water permeance (81.2 liter m-2 hour-1 bar-1), antibiotic desalination efficiency (NaCl/tetracycline separation factor of 11.4), antifouling performance, and chlorine resistance.
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