In situ assembly of a covalent organic framework composite membrane for dye separation

被引：58

作者：

Zhang, Yawen ^{[1
]}

Ye, Hanchen ^{[1
]}

Chen, Dongyun ^{[1
]}

Li, Najun ^{[1
]}

Xu, Qingfeng ^{[1
]}

Li, Hua ^{[1
]}

He, Jinghui ^{[1
]}

Lu, Jianmei ^{[1
]}

机构：

[1] Soochow Univ, Ctr Suzhou Nano Sci & Technol, Collaborat Innovat, Coll Chem Chem Engn & Mat Sci, 199 Renai Rd,Suzhou Ind Pk, Suzhou 215123, Peoples R China

来源：

JOURNAL OF MEMBRANE SCIENCE | 2021年 / 628卷

基金：

中国国家自然科学基金; 国家重点研发计划;

关键词：

In situ assembly; COF Tp-TTA; Dye separation; Tp-TTA/mPSF(x) membrane; SOLVENT NANOFILTRATION; INTERFACIAL POLYMERIZATION; COFS; SELECTIVITY; RESISTANT; ENERGY; FLUX;

D O I：

10.1016/j.memsci.2021.119216

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Covalent organic frameworks (COFs) are prominent candidates for water separations and treatment. They have ordered channel structures, low densities, large specific surface areas, and tunable pore sizes. These features can be used to construct advanced organic solvent nanofiltration and separation membranes. Here, membranes with high permeability and selectivity are prepared in situ with 10% 1,3,5-triformylphloroglucinol (Tp) and 4,4',4 ''-(1,3,5- triazine-2,4,6-triyl) trianiline (TTA) on a Noria-polyethyleneimine co-modified ultrafiltration membrane substrate. The membrane thickness is only 200 nm. Moreover, the loaded COF Tp-TTA significantly increases the chemical stability and solvent resistance of the membrane, which enables a high (Chrome black T) CB-T dye rejection rate (>94%) in water and ethanol. The COF-based membrane is superior to previously reported dye-separation membranes, and has great potential.

引用

页数：9

共 44 条

[41] In Situ Assembly of a Zeolite Imidazolate Framework Hybrid Thin-Film Nanocomposite Membrane with Enhanced Desalination Performance Induced by Noria Polyethyleneimine Codeposition [J].