Spatial functionality gradient in a ZIF-8 thin film membrane
KM. Archana Yadav, Girish Mishra, Susmita Kundu, Soumya Ghosh, Ritesh Haldar
Abstract
a vapor-phase process applied to a ZIF-8 monolithic film. Anisotropic diffusion of a reactive linker-imidazole-2-carboxaldehyde (CHO-Im)-into the ZIF-8 monolith results in a gradient incorporation of CHO-Im, yielding a ZIF-8-CHO monolith. Spatial anisotropy of the CHO functional groups is confirmed through X-ray diffraction, scanning electron microscopy, and vibrational spectroscopy. To demonstrate its potential, we fabricated an anodic aluminium oxide-supported membrane and highlighted its enhanced gas permselectivity compared to pristine membranes.
Topics & Concepts
MembraneThin filmMaterials scienceNanotechnologyComputer scienceChemical engineeringChemistryEngineeringBiochemistryAnalytical Chemistry and SensorsMetal-Organic Frameworks: Synthesis and ApplicationsChemical Synthesis and Reactions