CO2 Adsorption Over Metal-Organic Frameworks: A Mini Review.

Metal-organic frameworks (MOFs) are a class of porous materials that are comprised of metal ion-containing nodes linked by multi-dentate organic ligand bridges principally through coordination bonding. Over the last few decades, MOFs have been studied widely as CO2 adsorbents. CO2 adsorption in MOFs can be enhanced by tuning their physicochemical properties. This short review discusses CO2 adsorption over MOFs with particular focus on the contributory effects of (1) inherent textural properties, (2) coordinatively unsaturated open metal sites, (3) surface functionalization, (4) structural interpenetration (catenation), and (5) ion-exchange.