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

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

61 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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