The controlled microfluidic formation of stable mixed phase HCP/FCC-UiO-67(Zr)-benzoic acid through modification of water concentration

Abstract This work reports the synthesis of a mixed crystal phase mesoporous metal–organic framework (MOF) through new route. The Hexagonal Centred Planar/Face Cubic UiO-67(Zr) product was microfluidically synthesised using benzoic acid as modulator. ratio can be altered changing concentration water present in reaction solution. shows increased mesoporosity and uptake N 2 at 77 K 1 bar 1083 cm 3 /g, compared to 615 /g for made via traditional batch approach. leads an increase working capacity due change isotherm type, from type I IV, with occurring more gradually overall pressure increases. An allows greater range control volume stored in/released material. has only been successful microfluidic conditions, highlighting potential importance this method future MOF.