Morphological Map of ZIF-8 Crystals with Five Distinctive Shapes: Feature of Filler in Mixed-Matrix Membranes on C3H6/C3H8 Separation

Fan Yang, Hao Mu, Chongqing Wang, Long Xiang, Kexin Yao, Lingmei Liu, Yang Yang, Yu Han, Yanshuo Li, Yichang Pan

Research output: Contribution to journalArticlepeer-review

34 Scopus citations

Abstract

Morphology-tailoring of metal-organic frameworks (MOFs) is essential for their specific application in molecular-separation, catalysis, and drug-delivery. However, precision syntheses of uniform MOFs crystals with anisotropic shape are still challenging. Herein, a morphological map for monodisperse ZIF-8 crystals with five distinctive shapes was constructed in terms of the synthetic conditions. It was revealed that the formation mechanism for ZIF-8 crystals with various shapes is strongly dependent on the concentration of cetyltrimethylammonium bromide (CTAB) added, not limited to the traditional capping mechanism for MOFs and metal nanocrystals. The generality of this strategy was also verified through the successful morphology-controllable synthesis of ZIF-67 crystals. The effect of ZIF-8 morphology on separation performance of resulting cross-linked poly(ethylene oxide) (XLPEO)-based mixed-matrix membranes for CH/CH mixtures was also evaluated.
Original languageEnglish (US)
Pages (from-to)3467-3473
Number of pages7
JournalChemistry of Materials
Volume30
Issue number10
DOIs
StatePublished - May 7 2018

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