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

Authors :
Juan Zhang
Guang Wang
Jianhua Zhang
Zhiguang Xu
Yan Zhao
Yichao Wang
Fenghua She
Stephen Gray
Lingxue Kong
Source :
Membranes, Vol 11, Iss 3, p 205 (2021)
Publication Year :
2021
Publisher :
MDPI AG, 2021.

Abstract

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.

Details

Language :
English
ISSN :
20770375
Volume :
11
Issue :
3
Database :
Directory of Open Access Journals
Journal :
Membranes
Publication Type :
Academic Journal
Accession number :
edsdoj.815ef4d8dda84e559383f0e6973a3e23
Document Type :
article
Full Text :
https://doi.org/10.3390/membranes11030205