3 years ago

Strategies for Improving the Functionality of Zeolitic Imidazolate Frameworks: Tailoring Nanoarchitectures for Functional Applications

Strategies for Improving the Functionality of Zeolitic Imidazolate Frameworks: Tailoring Nanoarchitectures for Functional Applications
Kevin C.-W. Wu, Fa-Kuen Shieh, Muhammad J. A. Shiddiky, Yusuf Valentino Kaneti, Chia-Kuang Tsung, Md. S. A. Hossain, Saikat Dutta, Yusuke Yamauchi, Kuo-Lun Tung
Zeolitic imidazolate frameworks (ZIFs), a subclass of metal–organic frameworks (MOFs) built with tetrahedral metal ions and imidazolates, offer permanent porosity and high thermal and chemical stabilities. While ZIFs possess some attractive physical and chemical properties, it remains important to enhance their functionality for practical application. Here, an overview of the extensive strategies which have been developed to improve the functionality of ZIFs is provided, including linker modifications, functional hybridization of ZIFs via the encapsulation of guest species (such as metal and metal oxide nanoparticles and biomolecules) into ZIFs, and hybridization with polymeric matrices to form mixed matrix membranes for industrial gas and liquid separations. Furthermore, the developed strategies for achieving size and shape control of ZIF nanocrystals are considered, which are important for optimizing the textural characteristics as well as the functional performance of ZIFs and their derived materials/hybrids. Moreover, the recent trends of using ZIFs as templates for the derivation of nanoporous hybrid materials, including carbon/metal, carbon/oxide, carbon/sulfide, and carbon/phosphide hybrids, are discussed. Finally, some perspectives on the potential future research directions and applications for ZIFs and ZIF-derived materials are offered. Zeolitic imidazolate frameworks (ZIFs), offer permanent porosity and high thermal and chemical stabilities. The developed strategies for enhancing the functionality of ZIFs, including linker functionalization and hybridization with guest species and polymers, are discussed. Finally, the utilization of ZIFs as templates for fabricating nanoporous hybrid materials and the future trends and prospects in the functionalization of ZIFs are examined.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1002/adma.201700213

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