Pebax®1657/Graphene oxide composite membranes for improved water vapor separation
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KAUST DepartmentAdvanced Membranes and Porous Materials Research Center
Chemical Engineering Program
Physical Science and Engineering (PSE) Division
Water Desalination and Reuse Research Center (WDRC)
Online Publication Date2016-11-02
Print Publication Date2017-03
Permanent link to this recordhttp://hdl.handle.net/10754/621833
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AbstractIn this study composite mixed matrix membranes containing hydrophilic microphase-separated block copolymer (Pebax® 1657) and graphene oxide nanosheets were prepared using a dip coating method. Water vapor and N2 gas permeation were measured as a function of different parameters: (i) layer thickness, (ii) content of graphene oxide (GO), and (iii) content of reduced GO. Surprisingly, a concentration of only 2 wt% of GO nanosheets well dispersed in the Pebax layer boosted the selectivity 8 times by decreasing the water vapor permeance by only 12% whereas N2 gas permeance decreased by 70%. Using reduced GO instead, the water vapor permeance declined by up to 16% with no influence on the N2 gas permeance. We correlated the permeation properties of the mixed matrix membranes with different models and found, that both the modified Nielsen model and the Cussler model give good correlation with experimental findings.
CitationAkhtar FH, Kumar M, Peinemann K-V (2016) Pebax®1657/Graphene oxide composite membranes for improved water vapor separation. Journal of Membrane Science. Available: http://dx.doi.org/10.1016/j.memsci.2016.10.045.
SponsorsThe research reported in this publication was supported by the funding from King Abdullah University of Science and Technology (KAUST).
JournalJournal of Membrane Science
Except where otherwise noted, this item's license is described as © 2016. This manuscript version is made available under the CC-BY-NC-ND 4.0 license