Synthesis, Structures of <scp>2D</scp> Coordination Layers <scp>Metal‐Organic</scp> Frameworks with Highly Selective <scp>CO<sub>2</sub></scp> Uptake<sup>†</sup>
Jingjing Jiang, Yang Wang, Dingsheng Wang, Wenwei Zhang, Yadong Li
Abstract
Main observation and conclusion By a strategy of fine‐tuning of packing mode between the adjacent layers in a 2D net metal‐organic frameworks (MOFs) through ligand changing, two 2D sql‐type MOFs with highly selective CO 2 uptake, CuHIN and CuHPB, were successfully synthesized. Compared with the precursor MOF‐2, the fine‐tuning structure of CuHIN shows selective adsorption of CO 2 over N 2 and CH 4 with the CO 2 uptake amounts as high as 4.7 wt% at 0.15 bar and at 298 K, and CO 2 selectivity towards N 2 and CH 4 is 165.8 and 10.22 at 1 bar and at 298 K, respectively. In addition, for the 2D MOFs, the dynamic porous structure depends on the interaction of the adjacent layers. The suitable interaction is good for gliding smoothly and gas adsorption.