A new post-synthetic route to graft amino groups in porous organic polymers for CO2 capture

被引：0

作者：

Wang, Qihaoyue ^{[1
]}

Lin, Lin ^{[1
]}

Jiang, Li ^{[1
]}

Wang, Zihao ^{[1
]}

Zhang, Yina ^{[1
]}

Han, Qiance ^{[1
]}

Huang, Xin ^{[1
]}

Zhu, Changyan ^{[1
]}

Jia, Jiangtao ^{[1
]}

Bian, Zheng ^{[1
]}

Zhu, Guangshan ^{[1
]}

机构：

[1] Northeast Normal Univ, Fac Chem, Minist Educ, Key Lab Polyoxometalate & Reticular Mat Chem, Changchun 130024, Jilin, Peoples R China

来源：

CHEMICAL SCIENCE | 2025年

基金：

国家重点研发计划; 中国国家自然科学基金;

关键词：

POSTSYNTHETIC COVALENT MODIFICATION; CARBON-DIOXIDE CAPTURE; AROMATIC FRAMEWORK; FLUE-GAS; ADSORPTION; FUNCTIONALIZATION; SEPARATION; CHEMISTRY; NETWORKS;

D O I：

10.1039/d5sc00355e

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Herein, we report the development of a post-synthetic modification approach to introduce a high loading of formyl groups onto porous aromatic framework (PAF)-5 via Friedel-Crafts alkylation followed by hydrolysis. Rigorous characterization by NMR, X-ray photoelectron spectroscopy, and Fourier-transform infrared spectroscopy authenticated the successful integration of aldehyde moieties into PAF-5, affording PAF-5-CHO. Subsequent functionalization of PAF-5-CHO with various amines produced three amine-functionalized PAF derivatives. Notably, PAF-5-C 00000000 00000000 00000000 00000000 11111111 00000000 11111111 00000000 00000000 00000000 N-EDA exhibited a 78% enhancement in carbon dioxide (CO2) adsorption capacity, reaching 3.78 mmol g-1 at 1 bar and 298 K relative to PAF-5-CHO. Breakthrough experiments demonstrated that PAF-5-CN-EDA could effectively separate CO2 from simulated flue gas (CO2/N2 = 15 : 85, v/v; 10 mL min-1). In situ infrared spectroscopy, density functional theory calculations and temperature-programmed desorption studies provided insights into the CO2 adsorption mechanism.

引用

页数：8

共 58 条

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