Pyrazine-cored covalent organic frameworks for efficient CO2 adsorption and removal of organic dyes

被引：17

作者：

Hu, Guishan ^{[1
]}

Cui, Gang ^{[1
]}

Zhao, Jie ^{[1
]}

Han, Minying ^{[1
]}

Zou, Ru-Yi ^{[1
]}

机构：

[1] Zhengzhou Univ, Coll Chem, Zhengzhou 450001, Henan, Peoples R China

来源：

POLYMER CHEMISTRY | 2022年 / 13卷 / 25期

基金：

中国国家自然科学基金;

关键词：

CONSTRUCTION; FILTRATION; STABILITY; IMINE;

D O I：

10.1039/d2py00329e

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The rational introduction of nitrogen heterocycles into a linker of covalent organic frameworks (COFs) can effectively capture CO2 and remove dyes in sewage. Here, we report the designed synthesis of COF-H1 and COF-H2, starting from integration reactions between a novel tetratopic 2,3,5,6-tetrakis(4-aminophenyl)pyrazine and ditopic aromatic aldehydes. They crystallize as 2D microporous pore structures with high stability in different environments, exhibiting good CO2 uptake capacities of 56.8 and 66.2 mg g(-1) at 273 K, respectively. COF-H1 and COF-H2 exhibit efficient adsorption performances for rhodamine B, methylene blue, Congo red and gentian violet, especially reaching the adsorption equilibrium for Congo red in 5 minutes together with an adsorption capacity of 470.3 and 362.9 mg g(-1), respectively.

引用

页码：3827 / 3832

页数：6

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