Show simple item record

dc.contributor.authorShinde, Digambar
dc.contributor.authorSheng, Guan
dc.contributor.authorLi, Xiang
dc.contributor.authorOstwal, Mayur
dc.contributor.authorEmwas, Abdul-Hamid M.
dc.contributor.authorHuang, Kuo-Wei
dc.contributor.authorLai, Zhiping
dc.date.accessioned2018-10-09T13:11:39Z
dc.date.available2018-10-09T13:11:39Z
dc.date.issued2018-10-05
dc.identifier.citationShinde DB, Sheng G, Li X, Ostwal M, Emwas A-H, et al. (2018) Crystalline 2D Covalent Organic Framework Membranes for High-Flux Organic Solvent Nanofiltration. Journal of the American Chemical Society. Available: http://dx.doi.org/10.1021/jacs.8b08788.
dc.identifier.issn0002-7863
dc.identifier.issn1520-5126
dc.identifier.doi10.1021/jacs.8b08788
dc.identifier.urihttp://hdl.handle.net/10754/628913
dc.description.abstractTwo-dimensional (2D) covalent organic framework (COF) materials have the most suitable microstructure for membrane applications in order to achieve both high flux and high selectivity. Here, we report the synthesis of a crystalline TFP-DHF 2D COF membrane constructed from two precursors of 1,3,5-triformylphloroglucinol (TFP) and 9,9-dihexylfluorene-2,7-diamine (DHF) through the Langmuir–Blodgett (LB) method, for the first time. A single COF layer is precisely four-unit-cell thick and can be transferred to different support surfaces layer-by-layer. The TFP-DHF 2D COF membrane supported on anodic aluminum oxide (AAO) porous supports displayed remarkable permeabilities for both polar and nonpolar organic solvents, which were approximately 100 times higher than that of the amorphous membranes prepared by the same procedure and similar to the best of the reported polymer membranes. The transport mechanism through the TFP-DHF 2D COF membrane was found to be a viscous flow coupled with a strong slip boundary enhancement, which was also different from those of the amorphous polymer membranes. The membrane exhibited a steep molecular sieving with a molecular weight retention onset of approximately 600 Da and a molecular weight cut-off of approximately 900 Da. The substantial performance enhancement was attributed to the structural change from an amorphous structure to a well-defined ordered porous structure, which clearly demonstrated the high potential for the application of 2D COFs as the next generation of membrane materials.
dc.description.sponsorshipThe work is supported by KAUST center competitive fund FCC/1/1972-19-01 and KAUST baseline fund BAS/1/1375-01-01.
dc.publisherAmerican Chemical Society (ACS)
dc.relation.urlhttps://pubs.acs.org/doi/10.1021/jacs.8b08788
dc.rightsThis document is the Accepted Manuscript version of a Published Work that appeared in final form in Journal of the American Chemical Society, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://pubs.acs.org/doi/10.1021/jacs.8b08788.
dc.titleCrystalline 2D Covalent Organic Framework Membranes for High-Flux Organic Solvent Nanofiltration
dc.typeArticle
dc.contributor.departmentAdvanced Membranes and Porous Materials Research Center
dc.contributor.departmentChemical Science Program
dc.contributor.departmentChemical and Biological Engineering Program
dc.contributor.departmentKAUST Catalysis Center (KCC)
dc.contributor.departmentNMR
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Division
dc.identifier.journalJournal of the American Chemical Society
dc.eprint.versionPost-print
kaust.personShinde, Digambar
kaust.personSheng, Guan
kaust.personLi, Xiang
kaust.personOstwal, Mayur
kaust.personEmwas, Abdul-Hamid M.
kaust.personHuang, Kuo-Wei
kaust.personLai, Zhiping
kaust.grant.numberFCC/1/1972-19-01
kaust.grant.numberBAS/1/1375-01-01
refterms.dateFOA2018-10-09T13:21:30Z
dc.date.published-online2018-10-05
dc.date.published-print2018-10-31


Files in this item

Thumbnail
Name:
jacs.8b08788.pdf
Size:
864.6Kb
Format:
PDF
Description:
Accepted Manuscript

This item appears in the following Collection(s)

Show simple item record