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Doping silver nanoparticles into reverse osmosis membranes for antibacterial properties
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Doping silver nanoparticles into reverse osmosis membranes for antibacterial properties
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Journal Article
Doping silver nanoparticles into reverse osmosis membranes for antibacterial properties
2023
Overview
Polyamide composite reverse osmosis (RO) membranes occupy an important position in water treatment. However, membrane fouling, especially biofouling, can lead to a significant decrease in membrane permeability. Therefore, reducing biological contamination is a significant and important property of an RO membrane. In this article, a hypothesis on the development of a new kind of RO membrane for antibacterial purposes was prepared by the modification of gallic acid (GA) and silver nanoparticles (AgNPs). Then, experiments were carried out to verify the hypothesis, getting a modified RO membrane with the composite of GA@AgNPs. The water flux of the GA@AgNPs RO membrane was 31.1 L·m
·h
, which was 46.7% higher than that of the original membrane, while the rejection rate of salt remained at 93.8–97.6%. Moreover, the GA@AgNPs RO membranes exhibited outstanding antibacterial properties with more than 99.9% antibacterial efficiency against both
and
. Our work provides a new idea for solving the problem of biofouling RO membranes.
Publisher
De Gruyter,Walter de Gruyter GmbH
Subject
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