2D Metal-Organic Framework-Based Thin-Film Nanocomposite Membranes for Reverse Osmosis and Organic Solvent Nanofiltration

被引：36

作者：

Li, Feng ^{[1
]}

Liu, Theo Dongyu ^{[1
]}

Xie, Silijia ^{[1
]}

Guan, Jian ^{[1
]}

Zhang, Sui ^{[1
]}

机构：

[1] Natl Univ Singapore, Dept Chem & Biomol Engn, 4 Engn Dr 4, Singapore 117585, Singapore

来源：

CHEMSUSCHEM | 2021年 / 14卷 / 11期

基金：

新加坡国家研究基金会;

关键词：

membranes; metal-organic frameworks; nanocomposites; nanofiltration; reverse osmosis; HOLLOW-FIBER MEMBRANES; HIGH-FLUX; INTERFACIAL POLYMERIZATION; GRAPHENE OXIDE; DESALINATION; PERFORMANCE; UIO-66; ROBUST; STATE; SIZE;

D O I：

10.1002/cssc.202100335

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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.

引用

页码：2452 / 2460

页数：9

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