Single-step synthesis and interface tuning of core-shell metal-organic framework nanoparticles.

ABSTRACT: Control over the spatial distribution of components in metal-organic frameworks has potential to unlock improved performance and new behaviour in separations, sensing and catalysis. We report an unprecedented single-step synthesis of multi-component metal-organic framework (MOF) nanoparticles based on the canonical ZIF-8 (Zn) system and its Cd analogue, which form with a core-shell structure whose internal interface can be systematically tuned. We use scanning transmission electron microscopy, X-ray energy dispersive spectroscopy and a new composition gradient model to fit high-resolution X-ray diffraction data to show how core-shell composition and interface characteristics are intricately controlled by synthesis temperature and reaction composition. Particle formation is investigated by

SUBMITTER: Orr KWP 

PROVIDER: S-EPMC8179513 | biostudies-literature | 2021 Feb

REPOSITORIES: biostudies-literature