6533b856fe1ef96bd12b31fb

RESEARCH PRODUCT

Confined crystallization of a HKUST-1 metal–organic framework within mesostructured silica with enhanced structural resistance towards water

Tomaž ČEndakMatjaz MazajN. Zabukovec LogarMichela TodaroMichela TodaroGianpiero Buscarino

subject

Phase transitionMaterials scienceRenewable Energy Sustainability and the EnvironmentComposite numberEngineering controlled terms: Crystalline materialsOrganometallicsStability Compendex keywords Confined crystallizationElevated temperatureMesostructured silicaMetal organic frameworkSpherical mesoporesStructural characterizationStructural resistanceStructural stabilities Engineering main heading: SilicaNanotechnology02 engineering and technologyGeneral Chemistry010402 general chemistry021001 nanoscience & nanotechnology01 natural sciences0104 chemical scienceslaw.inventionAdsorptionChemical engineeringlawPhase (matter)MoleculeGeneral Materials ScienceMetal-organic frameworkCrystallization0210 nano-technologyMesoporous material

description

A HKUST-1 metal–organic framework was crystallized in the NH2-modified mesostructured silica FDU-12 in order to improve its structural stability upon water exposure. In-depth structural characterization studies of the designed composite confirmed successful formation of the MOF phase within the ordered spherical mesopores of the silica matrix. In spite of the confinement within the cavities, MOF exhibits full accessibility for the adsorbed gas molecules. In contrast to the bulk HKUST-1, which undergoes slow phase transition in a humid environment, the structural integrity of the HKUST-1 in the humid-protective matrix remains unchanged even after immersion and stirring in water at elevated temperature.

10.1039/c7ta04959ehttp://hdl.handle.net/10447/276196