Selective CO2 Adsorption by Nitro Functionalized Metal Organic Frameworks

Two nitro functionalized Cu(II)-MOFs exhibit high CO2 uptake with nice selectivity over other gases like H2, N2, and CH4, which is potentially important for the removal of carbon dioxide from industrial flue gas and natural gas. Here the selective CO2 adsorption by these MOFs is primarily due to the presence of suitable voids with −NO2 group functionalized pore walls in the dehydrated framework, which is unprecedented.