Mixed matrix membranes incorporated with size-reduced Cu-BTC for improved gas separation
Article
Article Title | Mixed matrix membranes incorporated with size-reduced Cu-BTC for improved gas separation |
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ERA Journal ID | 201058 |
Article Category | Article |
Authors | Ge, Lei (Author), Zhou, Wei (Author), Rudolph, Victor (Author) and Zhu, Zhonghua (Author) |
Journal Title | Journal of Materials Chemistry A |
Journal Citation | 1 (21), pp. 6350-6358 |
Number of Pages | 9 |
Year | 2013 |
Publisher | The Royal Society of Chemistry |
Place of Publication | United Kingdom |
ISSN | 2050-7488 |
2050-7496 | |
Digital Object Identifier (DOI) | https://doi.org/10.1039/c3ta11131h |
Web Address (URL) | http://pubs.rsc.org/en/Content/ArticleLanding/2013/TA/c3ta11131h#!divAbstract |
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. |
Keywords | crystalline materials; gas adsorption; gases; grain size and shape; permeation; separation; sonication adsorption capability; adsorption properties; gas separations; interfacial voids; large surface area; metalorganic frameworks (MOFs); mixed matrix membranes; sonication treatment; gas permeable membranes |
ANZSRC Field of Research 2020 | 400409. Separation technologies |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | University of Queensland |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q3z4q/mixed-matrix-membranes-incorporated-with-size-reduced-cu-btc-for-improved-gas-separation
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