Mixed matrix membranes incorporated with size-reduced Cu-BTC for improved gas separation

Ge, Lei, Zhou, Wei, Rudolph, Victor and Zhu, Zhonghua (2013) Mixed matrix membranes incorporated with size-reduced Cu-BTC for improved gas separation. Journal of Materials Chemistry A, 1 21: 6350-6358. doi:10.1039/c3ta11131h

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Author Ge, Lei
Zhou, Wei
Rudolph, Victor
Zhu, Zhonghua
Title Mixed matrix membranes incorporated with size-reduced Cu-BTC for improved gas separation
Journal name Journal of Materials Chemistry A   Check publisher's open access policy
ISSN 2050-7488
Publication date 2013-01-01
Sub-type Article (original research)
DOI 10.1039/c3ta11131h
Open Access Status Not Open Access
Volume 1
Issue 21
Start page 6350
End page 6358
Total pages 9
Place of publication United Kingdom
Publisher R S C Publications
Language eng
Formatted abstract
Metal–organic frameworks (MOFs), with large surface area and selective gas adsorption capability, can be the promising additives in mixed matrix membranes (MMMs) for potential gas separation. In this study, mixed matrix membranes with dispersed Cu-BTC [Cu3(BTC)2] have been fabricated and employed for gas separation. The sonication treatment was adopted to reduce the crystal size of MOFs and improve their affinity to the polymer matrix. The crystal structure, surface area and gas adsorption properties of as-synthesized and sonication-treated Cu-BTC were measured and compared. The morphology of the derived mixed matrix membranes varied with sonication intensity and Cu-BTC particle size, and the elimination of interfacial voids indicated the improvement of the adhesion between Cu-BTC crystals and the polymer matrix. The permeation test revealed that the gas permeance and selectivity of membranes depend on the crystal size of Cu-BTC fillers. Incorporation of the sonicated Cu-BTC results in enhancing both gas permeability and selectivity of the derived mixed matrix membranes. The analysis of permeation and gas sorption results also indicates that MOFs improve both diffusivity and solubility of gas molecules thus enhancing the permeability and selectivity of the membrane.
Keyword Metal-organic frameworks
Nanocomposite membranes
CO2/CH4 separation
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
Official 2014 Collection
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Citation counts: TR Web of Science Citation Count  Cited 48 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 47 times in Scopus Article | Citations
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Created: Sun, 16 Jun 2013, 10:21:08 EST by System User on behalf of School of Chemical Engineering