Formation of hollow and mesoporous structures in single-crystalline microcrystals of metal-organic frameworks via double-solvent mediated overgrowth

Lien Yang Chou, Pan Hu, Jia Zhuang, Joseph V. Morabito, Ka Chon Ng, Ya Chuan Kao, Shao Chun Wang, Fa Kuen Shieh, Chun Hong Kuo, Chia Kuang Tsung

Research output: Contribution to journalArticlepeer-review

56 Scopus citations

Abstract

The creation of hierarchical porosity in metal-organic frameworks (MOFs) could benefit various applications of MOFs such as gas storage and separation. Having single-crystalline microcrystals instead of poly-crystalline composites is critical for these potential applications of MOFs with hierarchical porosity. We developed a room temperature synthetic method to generate uniform hollow and mesoporous zeolitic imidazolate framework-8 (ZIF-8) microcrystals with a single-crystalline structure via overgrowing a ZIF-8 shell in methanol solution on a ZIF-8 core with water adsorbed in the pores. The cavities formed as a result of the different solvent micro-environment. This double-solvent mediated overgrowth method could be applied to prepare other MOFs with hierarchical porosity.

Original languageEnglish
Pages (from-to)19408-19412
Number of pages5
JournalNanoscale
Volume7
Issue number46
DOIs
StatePublished - 14 Dec 2015

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