A novel strategy to improve gas capture performance of metal-free azo-bridged porphyrin porous organic polymers: The design of traps

被引：4

作者：

Wang, Ruiyuan ^{[1
,2
]}

Liu, Qingquan ^{[1
,2
]}

Peng, Qi ^{[1
,2
]}

Yang, Xiaoyu ^{[1
,2
]}

Zhao, Hongwei ^{[1
,2
]}

Fan, Hui ^{[1
,2
]}

Liu, Huan ^{[1
,2
]}

Cao, Xinxiu ^{[1
,2
]}

机构：

[1] Hunan Univ Sci & Technol, Sch Mat Sci & Engn, 2 Taoyuan St, Xiangtan 411201, Peoples R China

[2] Hunan Univ Sci & Technol, Hunan Prov Key Lab Adv Mat New Energy Storage & Co, 2 Taoyuan St, Xiangtan 411201, Peoples R China

来源：

EUROPEAN POLYMER JOURNAL | 2022年 / 175卷

基金：

中国国家自然科学基金;

关键词：

Azo-bridged porphyrin; Porous organic polymers; Traps; Gas capture; CARBON-DIOXIDE; PORE-SIZE; ADSORPTION PROPERTIES; STORAGE; MEMBRANE;

D O I：

10.1016/j.eurpolymj.2022.111359

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Porous organic polymers (POPs) have potential applications in gas capture and storage to solve the challenges including decreasing the emission of greenhouse gases and storing green energies. However, they mainly rely on the surface of pores to adsorb gas molecules, and the inner space of the pores is underutilized. Herein, we synthesized two azo-bridged porphyrin POPs with a linear (PPAPP) and bent (PDAPP) backbone, respectively. The Fourier transform infrared (FT-IR) spectra and the element content analysis shows that the extent of reaction of PPAPP is higher than that of PDAPP. The Brunauer-Emmett-Teller surface area of PPAPP is almost 4 times higher than that of PDAPP. Nevertheless, the CH4 and CO2 uptake capacity of PDAPP is equal to or higher than that of PPAPP. The reason for this is that PDAPP contains many traps. Traps with a large inner space and small sized doors could act as mazes for gas molecules. Gas molecules could enter the traps, but it is hard to get out of them. As a result, traps could act as containers for gas molecules. Our research suggests that POPs with traps are potential high-efficiency gas uptake materials because the inner space of the pores could be utilized.

引用

页数：8