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Title: Molecular design of nanohybrid gas separation membranes for optimal CO 2 separation
Authors: Lau, C.H. 
Paul, D.R.
Chung, T.S. 
Keywords: CO 2 separation
Hybrid materials
Nanohybrid membranes
Issue Date: 24-Jan-2012
Citation: Lau, C.H., Paul, D.R., Chung, T.S. (2012-01-24). Molecular design of nanohybrid gas separation membranes for optimal CO 2 separation. Polymer 53 (2) : 454-465. ScholarBank@NUS Repository.
Abstract: Organic-inorganic materials comprising CO 2-philic components may yield superior CO 2 transport properties and good CO 2/H 2 gas selectivity. We report that a fine balance in size heterogeneity in the silicon-based structures is essential and a mixture of sizes up to 50 nm surrounded by 5-15 nm silicon-based nanostructures is the preferred inorganic phase morphology that yields optimal nanohybrid membranes. The combination of optimal synthesis conditions i.e. water/silicon ratio, condensation and ozone pre-treatment durations yields a nanohybrid membrane with a CO 2 permeability of 2000 Barrer while achieving a CO 2/H 2 selectivity of 11. The findings of this work are important for the design of gas separation membranes using green materials. © 2011 Elsevier Ltd. All rights reserved.
Source Title: Polymer
ISSN: 00323861
DOI: 10.1016/j.polymer.2011.12.011
Appears in Collections:Staff Publications

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