Postsynthesis Annealing of MOF-5 Remarkably Enhances the Framework Structural Stability and CO2 Uptake

摘要: Structural stability and porosity characteristics of metal–organic frameworks (MOFs) are great importance for practical applications, such as gas sorption/storage catalytic support. By means a simple effective method postsynthesis thermal annealing below its framework decomposition temperature, the annealed MOF-5 shows unexpectedly high CO2 uptake up to 2 mmol g–1 at 25 °C 1 bar, which is more than double capacity untreated counterpart (0.8 g–1). characterizations reveal that MOFs very active with local vacancy sites due partial bridging carboxylates linker. The also show cyclic air/moisture. Such an approach may be effectively applied other MOF structures or based membranes enhance their separation.