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Substrate-Independent, Regenerable Anti-Biofouling Coating for Polymeric Membranes

Biofouling is a common but significant issue in the membrane process as it reduces permeate flux, increases energy costs, and shortens the life span of membranes. As an effective antibacterial agent, a small amount of silver nanoparticles (AgNPs) immobilized on membrane surfaces will alleviate the m...

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Autores principales: Zhang, Juan, Wang, Guang, Zhang, Jianhua, Xu, Zhiguang, Zhao, Yan, Wang, Yichao, She, Fenghua, Gray, Stephen, Kong, Lingxue
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8000734/
https://www.ncbi.nlm.nih.gov/pubmed/33805836
http://dx.doi.org/10.3390/membranes11030205
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author Zhang, Juan
Wang, Guang
Zhang, Jianhua
Xu, Zhiguang
Zhao, Yan
Wang, Yichao
She, Fenghua
Gray, Stephen
Kong, Lingxue
author_facet Zhang, Juan
Wang, Guang
Zhang, Jianhua
Xu, Zhiguang
Zhao, Yan
Wang, Yichao
She, Fenghua
Gray, Stephen
Kong, Lingxue
author_sort Zhang, Juan
collection PubMed
description Biofouling is a common but significant issue in the membrane process as it reduces permeate flux, increases energy costs, and shortens the life span of membranes. As an effective antibacterial agent, a small amount of silver nanoparticles (AgNPs) immobilized on membrane surfaces will alleviate the membrane from biofouling. However, loading AgNPs on the membrane surface remains a challenge due to the low loading efficiency or the lack of bonding stability between AgNPs and the membrane surface. In this study, a substrate-independent method is reported to immobilize silver nanoparticles on polymeric membrane surfaces by firstly modifying the membrane surface with functional groups and then forming silver nanoparticles in situ. The obtained membranes had good anti-biofouling properties as demonstrated from disk diffusion and anti-biofouling tests. The silver nanoparticles were stably immobilized on the membrane surfaces and easily regenerated. This method is applicable to various polymeric micro-, ultra-, nano-filtration and reverse osmosis (RO) membranes.
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spelling pubmed-80007342021-03-28 Substrate-Independent, Regenerable Anti-Biofouling Coating for Polymeric Membranes Zhang, Juan Wang, Guang Zhang, Jianhua Xu, Zhiguang Zhao, Yan Wang, Yichao She, Fenghua Gray, Stephen Kong, Lingxue Membranes (Basel) Article Biofouling is a common but significant issue in the membrane process as it reduces permeate flux, increases energy costs, and shortens the life span of membranes. As an effective antibacterial agent, a small amount of silver nanoparticles (AgNPs) immobilized on membrane surfaces will alleviate the membrane from biofouling. However, loading AgNPs on the membrane surface remains a challenge due to the low loading efficiency or the lack of bonding stability between AgNPs and the membrane surface. In this study, a substrate-independent method is reported to immobilize silver nanoparticles on polymeric membrane surfaces by firstly modifying the membrane surface with functional groups and then forming silver nanoparticles in situ. The obtained membranes had good anti-biofouling properties as demonstrated from disk diffusion and anti-biofouling tests. The silver nanoparticles were stably immobilized on the membrane surfaces and easily regenerated. This method is applicable to various polymeric micro-, ultra-, nano-filtration and reverse osmosis (RO) membranes. MDPI 2021-03-13 /pmc/articles/PMC8000734/ /pubmed/33805836 http://dx.doi.org/10.3390/membranes11030205 Text en © 2021 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 (http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) ).
spellingShingle Article
Zhang, Juan
Wang, Guang
Zhang, Jianhua
Xu, Zhiguang
Zhao, Yan
Wang, Yichao
She, Fenghua
Gray, Stephen
Kong, Lingxue
Substrate-Independent, Regenerable Anti-Biofouling Coating for Polymeric Membranes
title Substrate-Independent, Regenerable Anti-Biofouling Coating for Polymeric Membranes
title_full Substrate-Independent, Regenerable Anti-Biofouling Coating for Polymeric Membranes
title_fullStr Substrate-Independent, Regenerable Anti-Biofouling Coating for Polymeric Membranes
title_full_unstemmed Substrate-Independent, Regenerable Anti-Biofouling Coating for Polymeric Membranes
title_short Substrate-Independent, Regenerable Anti-Biofouling Coating for Polymeric Membranes
title_sort substrate-independent, regenerable anti-biofouling coating for polymeric membranes
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8000734/
https://www.ncbi.nlm.nih.gov/pubmed/33805836
http://dx.doi.org/10.3390/membranes11030205
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