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Liesegang Banding for Controlled Size and Growth of Zeolitic‐Imidazolate Frameworks
Author(s) -
Zakhia Douaihy Rita,
AlGhoul Mazen,
Hmadeh Mohamad
Publication year - 2019
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201901605
Subject(s) - ostwald ripening , zeolitic imidazolate framework , crystallization , materials science , doping , precipitation , chemical physics , crystal growth , nanotechnology , crystal (programming language) , chemical engineering , metal organic framework , crystallography , chemistry , optoelectronics , computer science , adsorption , programming language , physics , meteorology , engineering
Here, the formation of periodic precipitation (Liesegang bands) from hybrid (organic–inorganic) components is reported, namely ZIF‐8, ZIF‐67, and their mixed metal derivatives. The spacing and width laws that characterize the Liesegang system are determined and the resulting pattern is exploited to crystal engineer various sizes and doping of the ZIF material. Several key parameters that govern the crystallization process of ZIF‐8 are investigated in each band and the growth of the particles in each band is found to follow an Ostwald ripening mechanism.