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High Flux Nanofiltration Membranes with Double-Walled Carbon Nanotube (DWCNT) as the Interlayer

Nanofiltration (NF) membranes with a high permeability and rejection are of great interest in desalination, separation and purification. However, how to improve the permeation and separation performance still poses a great challenge in the preparation of NF membranes. Herein, the novel composite NF...

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Autores principales: Wang, Zhen, Wang, Xiaojuan, Zheng, Tao, Mo, Bing, Xu, Huacheng, Huang, Yijun, Wang, Jian, Gao, Congjie, Gao, Xueli
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9609115/
https://www.ncbi.nlm.nih.gov/pubmed/36295770
http://dx.doi.org/10.3390/membranes12101011
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author Wang, Zhen
Wang, Xiaojuan
Zheng, Tao
Mo, Bing
Xu, Huacheng
Huang, Yijun
Wang, Jian
Gao, Congjie
Gao, Xueli
author_facet Wang, Zhen
Wang, Xiaojuan
Zheng, Tao
Mo, Bing
Xu, Huacheng
Huang, Yijun
Wang, Jian
Gao, Congjie
Gao, Xueli
author_sort Wang, Zhen
collection PubMed
description Nanofiltration (NF) membranes with a high permeability and rejection are of great interest in desalination, separation and purification. However, how to improve the permeation and separation performance still poses a great challenge in the preparation of NF membranes. Herein, the novel composite NF membrane was prepared through the interfacial polymerization of M-phenylenediamine (MPD) and trimesoyl chloride (TMC) on a double-walled carbon nanotube (DWCNT) interlayer supported by PES substrate. The DWCNT interlayer had a great impact on the polyamide layer formation. With the increase of the DWCNT dosage, the XPS results revealed an increase in the number of carboxyl groups, which decreased the crosslinking degree of the polyamide layer. Additionally, the AFM results showed that the surface roughness and specific surface area increased gradually. The water flux of the prepared membrane increased from 25.4 L/(m(2)·h) and 26.6 L/(m(2)·h) to 109 L/(m(2)·h) and 104.3 L/(m(2)·h) with 2000 ppm Na(2)SO(4) and NaCl solution, respectively, under 0.5 MPa. Meanwhile, the rejection of Na(2)SO(4) and NaCl decreased from 99.88% and 99.38% to 96.48% and 60.47%. The proposed method provides a novel insight into the rational design of the multifunctional interlayer, which shows great potential in the preparation of high-performance membranes.
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spelling pubmed-96091152022-10-28 High Flux Nanofiltration Membranes with Double-Walled Carbon Nanotube (DWCNT) as the Interlayer Wang, Zhen Wang, Xiaojuan Zheng, Tao Mo, Bing Xu, Huacheng Huang, Yijun Wang, Jian Gao, Congjie Gao, Xueli Membranes (Basel) Article Nanofiltration (NF) membranes with a high permeability and rejection are of great interest in desalination, separation and purification. However, how to improve the permeation and separation performance still poses a great challenge in the preparation of NF membranes. Herein, the novel composite NF membrane was prepared through the interfacial polymerization of M-phenylenediamine (MPD) and trimesoyl chloride (TMC) on a double-walled carbon nanotube (DWCNT) interlayer supported by PES substrate. The DWCNT interlayer had a great impact on the polyamide layer formation. With the increase of the DWCNT dosage, the XPS results revealed an increase in the number of carboxyl groups, which decreased the crosslinking degree of the polyamide layer. Additionally, the AFM results showed that the surface roughness and specific surface area increased gradually. The water flux of the prepared membrane increased from 25.4 L/(m(2)·h) and 26.6 L/(m(2)·h) to 109 L/(m(2)·h) and 104.3 L/(m(2)·h) with 2000 ppm Na(2)SO(4) and NaCl solution, respectively, under 0.5 MPa. Meanwhile, the rejection of Na(2)SO(4) and NaCl decreased from 99.88% and 99.38% to 96.48% and 60.47%. The proposed method provides a novel insight into the rational design of the multifunctional interlayer, which shows great potential in the preparation of high-performance membranes. MDPI 2022-10-19 /pmc/articles/PMC9609115/ /pubmed/36295770 http://dx.doi.org/10.3390/membranes12101011 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Wang, Zhen
Wang, Xiaojuan
Zheng, Tao
Mo, Bing
Xu, Huacheng
Huang, Yijun
Wang, Jian
Gao, Congjie
Gao, Xueli
High Flux Nanofiltration Membranes with Double-Walled Carbon Nanotube (DWCNT) as the Interlayer
title High Flux Nanofiltration Membranes with Double-Walled Carbon Nanotube (DWCNT) as the Interlayer
title_full High Flux Nanofiltration Membranes with Double-Walled Carbon Nanotube (DWCNT) as the Interlayer
title_fullStr High Flux Nanofiltration Membranes with Double-Walled Carbon Nanotube (DWCNT) as the Interlayer
title_full_unstemmed High Flux Nanofiltration Membranes with Double-Walled Carbon Nanotube (DWCNT) as the Interlayer
title_short High Flux Nanofiltration Membranes with Double-Walled Carbon Nanotube (DWCNT) as the Interlayer
title_sort high flux nanofiltration membranes with double-walled carbon nanotube (dwcnt) as the interlayer
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9609115/
https://www.ncbi.nlm.nih.gov/pubmed/36295770
http://dx.doi.org/10.3390/membranes12101011
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