纳滤
渗透
膜
聚酰胺
纳米复合材料
化学工程
二甲基甲酰胺
金属有机骨架
化学稳定性
材料科学
界面聚合
化学
高分子化学
聚合物
溶剂
有机化学
吸附
单体
工程类
生物化学
渗透
作者
Feng Li,Theo Dongyu Liu,Silijia Xie,Jian Guan,Sui Zhang
出处
期刊:Chemsuschem
[Wiley]
日期:2021-05-07
卷期号:14 (11): 2452-2460
被引量:27
标识
DOI:10.1002/cssc.202100335
摘要
Abstract Metal‐organic frameworks (MOFs) are promising candidates for membrane‐based liquid separations due to their intrinsic microporosity, but many are limited by their insufficient stability. In this work, a copper‐benzoquinoid (Cu‐THQ) MOF was synthesized and demonstrated structural stability in water and organic solvents. After incorporation into the polyamide layer, the hydrophilicity of the membranes was enhanced. The resultant thin‐film nanocomposite (TFN) membranes broke the permeability‐selectivity tradeoff by showing 242 % increase in water permeance and slightly enhanced salt rejection at MOF loading of 0.0192 mg cm −2 . The underlying mechanism was probed by different chemical and morphological characterizations. The membranes also showed improved tolerance to chlorine oxidation. With their excellent stability, the Cu‐THQ MOF‐based membranes further demonstrated impressive performance in organic solvent nanofiltration involving dimethylformamide.
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