A mesoporous (3,36)-connected txt-type metal–organic framework constructed by using a naphthyl-embedded ligand exhibiting high CO2 storage and selectivity†
Abstract
A highly mesoporous (3,36)-connected txt-type metal–organic framework, termed HHU-1, with a naphthalene-embedded ligand was successfully synthesized. HHU-1 exhibits a BET surface area of 2290 m2 g−1 and a high pore volume of 1.33 cm3 g−1. Due to the conjugation effect induced by the naphthyl of ligands, acylamide groups stretching into pores contribute to a comparably higher CO2 adsorption enthalpy (27.7 kJ mol−1), which endows HHU-1 with a high CO2 storage capacity (1071 mg g−1 at 40 bar) as well as high selectivity (CO2 : N2 = 140).