1、论文“Ultrahigh CO2 capture and separation in 3D Cage-COFs: Synergistic effect from Li, topology, and pore size”被Separation and Purification Technology(2024年中科院SCI期刊一区TOP期刊,IF=8.1)接收!该工作研究了常见改性手段——碱金属Li、拓扑结构调控和孔径调节三者协同改性三维共价有机骨架(3D COFs)提升其CO2捕获与分离性能的微观机制,为设计新型CO2吸附剂材料提供了重要的指导意义。
Highlights
CO2 capture and separation performances are evaluated in 3D Cage-COFs modified by Li, topology, and pore size using GCMC and DFT.
There is a synergistic effect between Li, topology, and pore size modification in enhancing the selective CO2 capture performance.
COF-3fold-OLi2 exhibits the best CO2 capture capacity of 236.10 cm3 cm-3 with the CO2 over N2/CH4 selectivity of 205.87/94.37 at 298 K and 1.0 bar.
Optimized adsorption pore environment is the main reason for enhanced performance.
Grasp the degree of modification to maximize synergistic effect.
https://doi.org/10.1016/j.seppur.2024.129897
2、论文“Coordination environment regulated Li-COFs for efficient CO2 capture and separation over N2 and CH4”被Applied Surface Science(2024年中科院SCI期刊二区TOP期刊,IF=6.3)接收!该工作研究了金属-共价有机骨架(M-COFs)中配位环境对选择性捕获CO2的影响机制,为设计新型M-COFs提供了重要的理论基础。
Highlights
CO2 capture and separation performances in Li-COF-XYs regulated coordination environment are evaluated using GCMC and DFT.
There is a linear relationship between the electronegativity of the coordination environment andCO2 capture performance.
Li-COF-ON shows the highest CO2 capture capacity of 7.99 mmol g-1 with CO2 selectivity over N2/CH4 of 127.26/86.45 at 298 K and 1.0 bar.
Pore characteristics impact CO2 capture and separation performances within similar coordination environments.
https://doi.org/10.1016/j.apsusc.2024.161368