https://scholars.lib.ntu.edu.tw/handle/123456789/409759
Title: | Metal-organic frameworks for dye sorption: Structure-property relationships and scalable deposition of the membrane adsorber | Authors: | Chi H.-Y. Hung S.-H. Kan M.-Y. Lee L.-W. Lam C.H. Chen J.-J. Kang D.-Y. |
Issue Date: | 2018 | Journal Volume: | 20 | Journal Issue: | 36 | Start page/Pages: | 5465-5474 | Source: | CrystEngComm | Abstract: | Metal-organic frameworks (MOFs) are increasingly being used for the sorption of dye molecules. Researchers have demonstrated the high sorption performance of several MOFs; however, their structure-property relationships have yet to be fully elucidated. Furthermore, the lack of a generalized deposition method for the fabrication of MOF membranes limits the industrial-scale application of MOF-based sorbents. In this work, we used a polymorphic system with three MOFs, ZIF-8, ZIF-L, and dia(Zn), to identify the key factors affecting the dye sorption performance. We found that ZIF-L, which possesses free imidazole molecules that leach into water during sorption, had the highest sorption capacity for the dye molecule rose bengal. We developed a wet deposition method for the creation of ZIF-L membranes on a porous alumina substrate using stabilized suspensions of ZIF-L. Tubular alumina supports cast with ZIF-L were used as a membrane adsorber for the removal of rose bengal under continuous-flow conditions. Finally, we investigated the influence of the membrane adsorber synthesis conditions on the sorption characteristics. ? 2018 The Royal Society of Chemistry. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/409759 | ISSN: | 14668033 | DOI: | 10.1039/c8ce01066h |
Appears in Collections: | 化學工程學系 |
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