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- Publisher Website: 10.1021/acs.est.0c02809
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- PMID: 32401501
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Article: Engineering a Nanocomposite Interlayer for a Novel Ceramic-Based Forward Osmosis Membrane with Enhanced Performance
Title | Engineering a Nanocomposite Interlayer for a Novel Ceramic-Based Forward Osmosis Membrane with Enhanced Performance |
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Authors | |
Keywords | Carbon nanotubes Membranes Nanocomposites Oxide minerals Pore size |
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. 7715-7724 How to Cite? |
Abstract | Rational design of a high-performance defect-free polyamide (PA) layer on a robust ceramic substrate is challenging for forward osmosis (FO) water treatment applications. In this study, we first demonstrated a robust ceramic-based thin-film composite (TFC) FO membrane by engineering a novel nanocomposite interlayer of titanium dioxide and carbon nanotube (TiO2/CNT). The structural morphologies and properties were systematically characterized for different substrates (without interlayer, with TiO2 interlayer, or with TiO2/CNT interlayer) and the corresponding ceramic-based TFC-FO membranes. Introduction of low roughness nanocomposite interlayers with decreased pore size created an interface with improved surface characteristics, favoring the formation of a defect-free nanovoid-containing PA layer with high cross-linking degree. The resulting ceramic-based FO membrane had a water permeability of approximately 2 L/(m2 h bar) and a NaCl rejection of 98%, showing simultaneous enhancements in both compared to the control membrane without an interlayer. Mechanism analysis indicates that such a special nanocomposite interlayer not only provided more active sites for the formation of a thinner defect-free nanovoid-containing PA layer without penetration into substrate but also acted as a highly porous three-dimensional network structure for rapid water transport. This work provides a novel protocol for rational design and fabrication of a high-performance multilayered inorganic FO membrane as well as extended applications in water treatment with enhanced performance. |
Persistent Identifier | http://hdl.handle.net/10722/285076 |
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 | Zhang, M | - |
dc.contributor.author | Jin, W | - |
dc.contributor.author | Yang, F | - |
dc.contributor.author | Duke, M | - |
dc.contributor.author | Dong, Y | - |
dc.contributor.author | Tang, CY | - |
dc.date.accessioned | 2020-08-07T09:06:24Z | - |
dc.date.available | 2020-08-07T09:06:24Z | - |
dc.date.issued | 2020 | - |
dc.identifier.citation | Environmental Science & Technology, 2020, v. 54 n. 12, p. 7715-7724 | - |
dc.identifier.issn | 0013-936X | - |
dc.identifier.uri | http://hdl.handle.net/10722/285076 | - |
dc.description.abstract | Rational design of a high-performance defect-free polyamide (PA) layer on a robust ceramic substrate is challenging for forward osmosis (FO) water treatment applications. In this study, we first demonstrated a robust ceramic-based thin-film composite (TFC) FO membrane by engineering a novel nanocomposite interlayer of titanium dioxide and carbon nanotube (TiO2/CNT). The structural morphologies and properties were systematically characterized for different substrates (without interlayer, with TiO2 interlayer, or with TiO2/CNT interlayer) and the corresponding ceramic-based TFC-FO membranes. Introduction of low roughness nanocomposite interlayers with decreased pore size created an interface with improved surface characteristics, favoring the formation of a defect-free nanovoid-containing PA layer with high cross-linking degree. The resulting ceramic-based FO membrane had a water permeability of approximately 2 L/(m2 h bar) and a NaCl rejection of 98%, showing simultaneous enhancements in both compared to the control membrane without an interlayer. Mechanism analysis indicates that such a special nanocomposite interlayer not only provided more active sites for the formation of a thinner defect-free nanovoid-containing PA layer without penetration into substrate but also acted as a highly porous three-dimensional network structure for rapid water transport. This work provides a novel protocol for rational design and fabrication of a high-performance multilayered inorganic FO membrane as well as extended applications in water treatment with enhanced performance. | - |
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.0c02809 | - |
dc.subject | Carbon nanotubes | - |
dc.subject | Membranes | - |
dc.subject | Nanocomposites | - |
dc.subject | Oxide minerals | - |
dc.subject | Pore size | - |
dc.title | Engineering a Nanocomposite Interlayer for a Novel Ceramic-Based Forward Osmosis Membrane with Enhanced Performance | - |
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.0c02809 | - |
dc.identifier.pmid | 32401501 | - |
dc.identifier.scopus | eid_2-s2.0-85086523427 | - |
dc.identifier.hkuros | 312247 | - |
dc.identifier.volume | 54 | - |
dc.identifier.issue | 12 | - |
dc.identifier.spage | 7715 | - |
dc.identifier.epage | 7724 | - |
dc.identifier.isi | WOS:000542229600070 | - |
dc.publisher.place | United States | - |
dc.identifier.issnl | 0013-936X | - |