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- Publisher Website: 10.1021/acs.est.0c00832
- Scopus: eid_2-s2.0-85086522771
- PMID: 32432876
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Article: Dually Charged MOF-Based Thin-Film Nanocomposite Nanofiltration Membrane for Enhanced Removal of Charged Pharmaceutically Active Compounds
Title | Dually Charged MOF-Based Thin-Film Nanocomposite Nanofiltration Membrane for Enhanced Removal of Charged Pharmaceutically Active Compounds |
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Authors | |
Keywords | Density functional theory Metal-Organic Frameworks Nanocomposite films Nanocomposites Nanofiltration |
Issue Date | 2020 |
Publisher | American 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? |
Abstract | Removal 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 Identifier | http://hdl.handle.net/10722/284804 |
ISSN | 2023 Impact Factor: 10.8 2023 SCImago Journal Rankings: 3.516 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Dai, R | - |
dc.contributor.author | Wang, X | - |
dc.contributor.author | Tang, CY | - |
dc.contributor.author | Wang, Z | - |
dc.date.accessioned | 2020-08-07T09:02:51Z | - |
dc.date.available | 2020-08-07T09:02:51Z | - |
dc.date.issued | 2020 | - |
dc.identifier.citation | Environmental Science & Technology, 2020, v. 54 n. 12, p. 7619-7628 | - |
dc.identifier.issn | 0013-936X | - |
dc.identifier.uri | http://hdl.handle.net/10722/284804 | - |
dc.description.abstract | Removal 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.language | eng | - |
dc.publisher | American Chemical Society. The Journal's web site is located at http://pubs.acs.org/journal/esthag | - |
dc.relation.ispartof | Environmental Science & Technology | - |
dc.rights | This document is the Accepted Manuscript version of a Published Work that appeared in final form in Environmental Science & Technology, 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/acs.est.0c00832 | - |
dc.subject | Density functional theory | - |
dc.subject | Metal-Organic Frameworks | - |
dc.subject | Nanocomposite films | - |
dc.subject | Nanocomposites | - |
dc.subject | Nanofiltration | - |
dc.title | Dually Charged MOF-Based Thin-Film Nanocomposite Nanofiltration Membrane for Enhanced Removal of Charged Pharmaceutically Active Compounds | - |
dc.type | Article | - |
dc.identifier.email | Tang, CY: tangc@hku.hk | - |
dc.identifier.authority | Tang, CY=rp01765 | - |
dc.description.nature | postprint | - |
dc.identifier.doi | 10.1021/acs.est.0c00832 | - |
dc.identifier.pmid | 32432876 | - |
dc.identifier.scopus | eid_2-s2.0-85086522771 | - |
dc.identifier.hkuros | 312248 | - |
dc.identifier.volume | 54 | - |
dc.identifier.issue | 12 | - |
dc.identifier.spage | 7619 | - |
dc.identifier.epage | 7628 | - |
dc.identifier.isi | WOS:000542229600060 | - |
dc.publisher.place | United States | - |
dc.identifier.issnl | 0013-936X | - |