Modulating Carbon Dioxide Storage by Facile Synthesis of Nanoporous Pillared-Layered Metal-Organic Framework with Different Synthetic Routes

Abstract

A Zn(II)-based paddle wheel pillared-layered metal-organic framework, [Zn2(DBrTPA)2(DABCO)].(DMF)2(MUT-4), containing 1,4-diazabicyclo[2.2.2]octane (DABCO) and 2,5-dibromoterephthalic acid (DBrTPA) has been successfully synthesized with different synthetic methods, including solvothermal, sonochemical, and their mixing methods, some of which are energy-efficient, rapid, and room-temperature synthetic procedures. Structural characterization of MUT-4 with single-crystal X-ray crystallography showed that it crystallizes in the tetragonal I41/acd space group. MUT-4 has shown higher performance than known MOFs in the CO2adsorption such as UiO-66, UiO-66-NH2, UiO-66-NO2, PCN-66, ZIF-68, UiO-67, bi..