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Formation of ZIF-8 membranes and crystals in a diluted aqueous solution.
- Source :
-
Materials Chemistry & Physics . May2013, Vol. 139 Issue 2/3, p1003-1008. 6p. - Publication Year :
- 2013
-
Abstract
- Abstract: Alumina hollow fiber supported ZIF-8 membranes and crystals have been prepared in diluted aqueous solutions. 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 μm 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 °C for 24 h, and their thicknesses were about 0.8–1.4 μm. 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. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 02540584
- Volume :
- 139
- Issue :
- 2/3
- Database :
- Academic Search Index
- Journal :
- Materials Chemistry & Physics
- Publication Type :
- Academic Journal
- Accession number :
- 89067647
- Full Text :
- https://doi.org/10.1016/j.matchemphys.2013.02.071