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    Formation of ZIF-8 membranes and crystals in a diluted aqueous solution

    Access Status
    Fulltext not available
    Authors
    Yao, J.
    Li, L.
    Wong, W.H.
    Tan, C.
    Dong, Dehua
    Wang, H.
    Date
    2013
    Type
    Journal Article
    
    Metadata
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    Citation
    Yao, J. and Li, L. and Wong, W.H. and Tan, C. and Dong, D. and Wang, H. 2013. Formation of ZIF-8 membranes and crystals in a diluted aqueous solution. Materials Chemistry and Physics. 139: pp. 1003-1008.
    Source Title
    Materials Chemistry and Physics
    ISSN
    02540584
    URI
    http://hdl.handle.net/20.500.11937/20429
    Collection
    • Curtin Research Publications
    Abstract

    Alumina hollow fiber supported ZIF-8 membranes and crystals have been prepared in diluted aqueoussolutions. The concentration of the aqueous solution, synthesis temperature and time were examined in detail. The particle sizes of ZIF-8 crystals increased from about 90 nm to 5.0 micrometers with the increase of the dilution of the aqueous synthesis solution. Continuous ZIF-8 membranes were obtained by using the diluted synthesis solution with a Zn2+:2-methylimidazolate:H2O molar ratio of 1:70:4952 at 50-70 degrees Celcius for 24 h, and their thicknesses were about 0.8-1.4 mm. Gas permeation tests indicated the ZIF-8 membranes are continuous and compact. The schematic formation of ZIF-8 membranes and crystals were proposed, and only in the diluted aqueous solution, ZIF-8 membranes and crystals could be prepared at the same time.

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