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dc.contributor.authorLiang, Weibin
dc.contributor.authorLi, Lin
dc.contributor.authorHou, Jingwei
dc.contributor.authorShepherd, Nicholas D
dc.contributor.authorBennett, Thomas D
dc.contributor.authorD'Alessandro, Deanna M
dc.contributor.authorChen, Vicki
dc.date.accessioned2018-10-10T10:45:14Z
dc.date.available2018-10-10T10:45:14Z
dc.date.issued2018-04-14
dc.identifier.issn2041-6520
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/283537
dc.description.abstractComposite membranes with defective metal-organic frameworks (MOFs) connect the emerging fields of MOF topological modification, MOF-polymer interfacial engineering and composite material functionalization. Although defective MOFs can be fabricated via thermal or chemical treatment, the relationship between hierarchical MOF structure and their performance in a polymeric membrane matrix has so far not been investigated. Here we show how a modulator fumarate-based MIL-53(Al) microwave synthesis process results in defective MOFs. This ligand replacement process leads to materials with hierarchical porosity, which creates a higher mesopore volume and Brønsted acidity without compromising the crystalline structure and pH stability. Compared with stoichiometric ratios, increasing the reaction time leads to more effective defect generation. The subsequent incorporation of defective MOFs into polyvinyl alcohol pervaporation membranes can effectively promote the fresh water productivity in concentrated brine treatment, with salt rejection of >99.999%. The membranes also have good long-term operational stability with effective antifouling behavior. We provide evidence that topological engineering of the MOF surface is related to their physical and chemical behaviors in a polymeric matrix, opening up the possibility of MOF defect engineering to realize selective separations, catalysis and sensing within a polymeric matrix.
dc.format.mediumElectronic-eCollection
dc.languageeng
dc.publisherRoyal Society of Chemistry (RSC)
dc.rightsAttribution-NonCommercial 4.0 International
dc.rights.urihttps://creativecommons.org/licenses/by-nc/4.0/
dc.titleLinking defects, hierarchical porosity generation and desalination performance in metal-organic frameworks.
dc.typeArticle
prism.endingPage3516
prism.issueIdentifier14
prism.publicationDate2018
prism.publicationNameChem Sci
prism.startingPage3508
prism.volume9
dc.identifier.doi10.17863/CAM.30900
dcterms.dateAccepted2018-03-05
rioxxterms.versionofrecord10.1039/c7sc05175a
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserved
rioxxterms.licenseref.startdate2018-04
dc.contributor.orcidHou, Jingwei [0000-0001-9139-9835]
dc.contributor.orcidBennett, Thomas D [0000-0003-3717-3119]
dc.contributor.orcidChen, Vicki [0000-0002-6604-6197]
dc.identifier.eissn2041-6539
rioxxterms.typeJournal Article/Review
pubs.funder-project-idRoyal Society (UF150021)
cam.issuedOnline2018-03-05


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Attribution-NonCommercial 4.0 International
Except where otherwise noted, this item's licence is described as Attribution-NonCommercial 4.0 International