A Modulated Hydrothermal (MHT) Approach for the Facile Synthesis of UiO66-Type MOFs

Developing a general and economicallye viable approach for the large-scale Synthesis of water-stable Metal organic frameworks (MOFs) With repeatable quality remains the key step for their massive production and commercialization. We herein report a green (aqueous solutions), mild (100 degrees C, 1 atm), and scalable able (can be up to kilograms) modulated hydrothermal (MHT) synthesis of UiO-66; an iconic MOF that has been widely studied recently for its high water stability: More importantly, the MHT synthetic approach can be applied to synthesize other water-stable MOFs with structures identical to UiO-66, such as UiO-66-(F)(4), UiO-66-(OCH2CH3)(2), and UiO-66-(COOH)(4), which cannot be obtained via the traditional solvothermal method. Their performance in postcombustion CO2 capture has also been evaluated. Our MINT approach has clearly depicted a roadmap for the facile synthesis of zirconium based water stable MOFs to facilitate their massive production and commercialization.