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Article: Nanofoaming of Polyamide Desalination Membranes To Tune Permeability and Selectivity
Title | Nanofoaming of Polyamide Desalination Membranes To Tune Permeability and Selectivity |
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Authors | |
Issue Date | 2018 |
Publisher | American Chemical Society. The Journal's web site is located at http://pubs.acs.org/toc/estlcu/current |
Citation | Environmental Science & Technology Letters, 2018, v. 5 n. 2, p. 123-130 How to Cite? |
Abstract | Recent studies have documented the existence of discrete voids in the thin polyamide selective layer of composite reverse osmosis membranes. Here we present compelling evidence that these nanovoids are formed by nanosized gas bubbles generated during the interfacial polymerization process. Different strategies were used to enhance or eliminate these nanobubbles in the thin polyamide film layer to tune its morphology and separation properties. Nanobubbles can endow the membrane with a foamed structure within the polyamide rejection layer that is approximately 100 nm in thickness. Simple nanofoaming methods, such as bicarbonate addition and ultrasound application, can result in a remarkable improvement in both membrane water permeability and salt rejection, thus overcoming the long-standing permeability-selectivity trade-off of desalination membranes. © 2018 American Chemical Society. |
Persistent Identifier | http://hdl.handle.net/10722/264037 |
ISSN | 2023 Impact Factor: 8.9 2023 SCImago Journal Rankings: 3.086 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Ma, X | - |
dc.contributor.author | Yao, Z | - |
dc.contributor.author | Yang, Z | - |
dc.contributor.author | Guo, H | - |
dc.contributor.author | Xu, Z | - |
dc.contributor.author | Tang, C | - |
dc.contributor.author | Elimelech, M | - |
dc.date.accessioned | 2018-10-22T07:48:30Z | - |
dc.date.available | 2018-10-22T07:48:30Z | - |
dc.date.issued | 2018 | - |
dc.identifier.citation | Environmental Science & Technology Letters, 2018, v. 5 n. 2, p. 123-130 | - |
dc.identifier.issn | 2328-8930 | - |
dc.identifier.uri | http://hdl.handle.net/10722/264037 | - |
dc.description.abstract | Recent studies have documented the existence of discrete voids in the thin polyamide selective layer of composite reverse osmosis membranes. Here we present compelling evidence that these nanovoids are formed by nanosized gas bubbles generated during the interfacial polymerization process. Different strategies were used to enhance or eliminate these nanobubbles in the thin polyamide film layer to tune its morphology and separation properties. Nanobubbles can endow the membrane with a foamed structure within the polyamide rejection layer that is approximately 100 nm in thickness. Simple nanofoaming methods, such as bicarbonate addition and ultrasound application, can result in a remarkable improvement in both membrane water permeability and salt rejection, thus overcoming the long-standing permeability-selectivity trade-off of desalination membranes. © 2018 American Chemical Society. | - |
dc.language | eng | - |
dc.publisher | American Chemical Society. The Journal's web site is located at http://pubs.acs.org/toc/estlcu/current | - |
dc.relation.ispartof | Environmental Science & Technology Letters | - |
dc.rights | This document is the Accepted Manuscript version of a Published Work that appeared in final form in Environmental Science & Technology Letters, 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.estlett.8b00016 | - |
dc.title | Nanofoaming of Polyamide Desalination Membranes To Tune Permeability and Selectivity | - |
dc.type | Article | - |
dc.identifier.email | Yao, Z: yaozk@hku.hk | - |
dc.identifier.email | Guo, H: guohao7@hku.hk | - |
dc.identifier.email | Tang, C: tangc@hku.hk | - |
dc.identifier.authority | Tang, C=rp01765 | - |
dc.description.nature | postprint | - |
dc.identifier.doi | 10.1021/acs.estlett.8b00016 | - |
dc.identifier.scopus | eid_2-s2.0-85041947839 | - |
dc.identifier.hkuros | 295715 | - |
dc.identifier.volume | 5 | - |
dc.identifier.issue | 2 | - |
dc.identifier.spage | 123 | - |
dc.identifier.epage | 130 | - |
dc.identifier.isi | WOS:000425474600013 | - |
dc.publisher.place | United States | - |
dc.identifier.issnl | 2328-8930 | - |