Ionic liquids as the MOFs/polymer interfacial binder for efficient membrane separation
Article
Article Title | Ionic liquids as the MOFs/polymer interfacial binder for efficient membrane separation |
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ERA Journal ID | 40638 |
Article Category | Article |
Authors | Lin, Rijia (Author), Ge, Lei (Author), Diao, Hui (Author), Rudolph, Victor (Author) and Zhu, Zhonghua (Author) |
Journal Title | ACS Applied Materials and Interfaces |
Journal Citation | 8 (46), pp. 32041-32049 |
Number of Pages | 9 |
Year | 2016 |
Publisher | American Chemical Society |
Place of Publication | United States |
ISSN | 1944-8244 |
1944-8252 | |
Digital Object Identifier (DOI) | https://doi.org/10.1021/acsami.6b11074 |
Web Address (URL) | https://pubs.acs.org/doi/10.1021/acsami.6b11074 |
Abstract | Obtaining strong interfacial affinity between filler and polymer is critical to the preparation of mixed matrix membranes (MMMs) with high separation efficiency. However, it is still a challenge for micron-sized metal organic frameworks (MOFs) to achieve excellent compatibility and defect-free interface with polymer matrix. Thin layer of ionic liquid (IL) was immobilized on micron-sized HKUST-1 to eliminate the interfacial nonselective voids in MMMs with minimized free ionic liquid (IL) in polymer matrix, and then the obtained IL decorated HKUST-1 was incorporated into 4,4′-(hexafluoroisopropylidene)-diphthalic anhydride−2,3,5,6-tetramethyl-1,3-phenyldiamine (6FDA-Durene) to fabricate MMMs. Acting as a filler/polymer interfacial binder, the favorable MOF/IL and IL/polymer interaction can facilitate the enhancement of MOF/polymer affinity. Compared to MMM with only HKUST-1 incorporation, MMM with IL decorated HKUST-1 succeeded in restricting the formation of nonselective interfacial voids, leading to an increment in CO2 selectivity. The IL decoration method can be an effective approach to eliminate interfacial voids in MMMs, extending the filler selection to a wide range of large-sized fillers. |
Keywords | metal−organic frameworks; mixed matrix membrane; interfacial binder; ionic liquid; gas separation |
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/q3z38/ionic-liquids-as-the-mofs-polymer-interfacial-binder-for-efficient-membrane-separation
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