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Article: Dually Charged MOF-Based Thin-Film Nanocomposite Nanofiltration Membrane for Enhanced Removal of Charged Pharmaceutically Active Compounds

TitleDually Charged MOF-Based Thin-Film Nanocomposite Nanofiltration Membrane for Enhanced Removal of Charged Pharmaceutically Active Compounds
Authors
KeywordsDensity functional theory
Metal-Organic Frameworks
Nanocomposite films
Nanocomposites
Nanofiltration
Issue Date2020
PublisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/journal/esthag
Citation
Environmental Science & Technology, 2020, v. 54 n. 12, p. 7619-7628 How to Cite?
AbstractRemoval of pharmaceutically active compounds (PhACs) is of great importance in wastewater reclamation due to their potent negative impacts on human health. Typical polyamide nanofiltration (NF) membranes are negatively charged, which compromises their rejection rate of positively charged PhACs. Herein, we propose to rationally design a novel thin-film nanocomposite (TFN) NF membrane featuring a dually charged metal organic framework (MOF) to effectively remove both positively and negatively charged PhACs. Ethylenediamine (ED) was grafted to the coordinately unsaturated metal sites inside the MIL-101(Cr). The resulting ED-MIL-101(Cr) contained both strong positively charged amine groups inside its channels and negatively charged carboxyl groups at its surface. This dually charged nature of the MOF nanoparticles enabled the ED-MIL-101(Cr)-containing TFN membrane to achieve high rejection rates (mostly >90%) for both positively (terbutaline, atenolol, fluoxetine) and negatively charged PhACs (ketoprofen, diclofenac, bezafibrate). At the same time, the ED-MIL-101(Cr) TFN membrane had greatly improved water permeance (140% over the control membrane with MOF loading). Calculations based on density functional theory further confirmed the large energy barrier for the migration of both negatively and positively charged PhACs across the nanochannels of ED-MIL-101(Cr). This study highlights a promising potential of dually charged MOF-TFN membranes for efficient removal of trace organic contaminants in wastewater reclamation.
Persistent Identifierhttp://hdl.handle.net/10722/284804
ISSN
2019 Impact Factor: 7.864
2015 SCImago Journal Rankings: 2.664

 

DC FieldValueLanguage
dc.contributor.authorDai, R-
dc.contributor.authorWang, X-
dc.contributor.authorTang, CY-
dc.contributor.authorWang, Z-
dc.date.accessioned2020-08-07T09:02:51Z-
dc.date.available2020-08-07T09:02:51Z-
dc.date.issued2020-
dc.identifier.citationEnvironmental Science & Technology, 2020, v. 54 n. 12, p. 7619-7628-
dc.identifier.issn0013-936X-
dc.identifier.urihttp://hdl.handle.net/10722/284804-
dc.description.abstractRemoval of pharmaceutically active compounds (PhACs) is of great importance in wastewater reclamation due to their potent negative impacts on human health. Typical polyamide nanofiltration (NF) membranes are negatively charged, which compromises their rejection rate of positively charged PhACs. Herein, we propose to rationally design a novel thin-film nanocomposite (TFN) NF membrane featuring a dually charged metal organic framework (MOF) to effectively remove both positively and negatively charged PhACs. Ethylenediamine (ED) was grafted to the coordinately unsaturated metal sites inside the MIL-101(Cr). The resulting ED-MIL-101(Cr) contained both strong positively charged amine groups inside its channels and negatively charged carboxyl groups at its surface. This dually charged nature of the MOF nanoparticles enabled the ED-MIL-101(Cr)-containing TFN membrane to achieve high rejection rates (mostly >90%) for both positively (terbutaline, atenolol, fluoxetine) and negatively charged PhACs (ketoprofen, diclofenac, bezafibrate). At the same time, the ED-MIL-101(Cr) TFN membrane had greatly improved water permeance (140% over the control membrane with MOF loading). Calculations based on density functional theory further confirmed the large energy barrier for the migration of both negatively and positively charged PhACs across the nanochannels of ED-MIL-101(Cr). This study highlights a promising potential of dually charged MOF-TFN membranes for efficient removal of trace organic contaminants in wastewater reclamation.-
dc.languageeng-
dc.publisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/journal/esthag-
dc.relation.ispartofEnvironmental Science & Technology-
dc.subjectDensity functional theory-
dc.subjectMetal-Organic Frameworks-
dc.subjectNanocomposite films-
dc.subjectNanocomposites-
dc.subjectNanofiltration-
dc.titleDually Charged MOF-Based Thin-Film Nanocomposite Nanofiltration Membrane for Enhanced Removal of Charged Pharmaceutically Active Compounds-
dc.typeArticle-
dc.identifier.emailTang, CY: tangc@hku.hk-
dc.identifier.authorityTang, CY=rp01765-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1021/acs.est.0c00832-
dc.identifier.pmid32432876-
dc.identifier.scopuseid_2-s2.0-85086522771-
dc.identifier.hkuros312248-
dc.identifier.volume54-
dc.identifier.issue12-
dc.identifier.spage7619-
dc.identifier.epage7628-
dc.publisher.placeUnited States-

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