Zong Lina, Li Xiangyu, Cai Peiyu, Zhou Hong-Cai, Huang Ning
Departmentof Polymer Science and Engineering, State Key Laboratory of Silicon and Advanced Semiconductor Materials, Zhejiang University, Hangzhou, 310058, China.
Dalian Ecological and Environmental Affairs Service Center, Dalian Municipal Bureau of Ecological Environment, Dalian, 116023, China.
ChemSusChem. 2025 Jan 14;18(2):e202401500. doi: 10.1002/cssc.202401500. Epub 2024 Oct 25.
To mitigate the greenhouse effect, a number of porous organic polymers (POPs) has been developed for carbon capture. Considering the permanent quadrupole of symmetrical CO molecules, the integration of electron-rich groups into POPs is a feasible way to enhance the dipole-quadrupole interactions between host and guest. To comprehensively explore the effect of pore environment, including specific surface area, pore size, and number of heteroatoms, on carbon dioxide adsorption capacity, we synthesized a series of microporous POPs with different content of β-ketoenamine structures via Schiff-base condensation reactions. These materials exhibit high BET specific surface areas, high stability, and excellent CO adsorption capacity. It is worth mentioning that the CO adsorption capacity and CO/N selectivity of TAPPy-TFP reaches 3.87 mmol g and 27. This work demonstrates that the introduction of β-ketoenamine sites directly through condensation reaction is an effective strategy to improve the carbon dioxide adsorption performance of carbon dioxide.
为了减轻温室效应，人们已经开发了多种多孔有机聚合物（POPs）用于碳捕获。考虑到对称CO分子的永久四极矩，将富电子基团引入POPs是增强主体与客体之间偶极-四极相互作用的一种可行方法。为了全面探究孔环境（包括比表面积、孔径和杂原子数量）对二氧化碳吸附容量的影响，我们通过席夫碱缩合反应合成了一系列具有不同β-酮烯胺结构含量的微孔POPs。这些材料表现出高BET比表面积、高稳定性和优异的CO吸附容量。值得一提的是，TAPPy-TFP的CO吸附容量和CO/N选择性分别达到3.87 mmol g和27。这项工作表明，通过缩合反应直接引入β-酮烯胺位点是提高二氧化碳吸附性能的有效策略。
