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Published in: Journal of Materials Science 20/2021

09-04-2021 | Chemical routes to materials

A PA/O-NGO/PPS sandwich composite membrane prepared via multi-step interfacial polymerization for desalination

Authors: Yuan Gao, Xinghai Zhou, Maliang Zhang, Zhenhuan Li

Published in: Journal of Materials Science | Issue 20/2021

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Abstract

In view of the disadvantages of concentration polarization and trade-off effects in the application of membrane in desalination field, oxide-nano graphene oxide/polyamide (O-NGO/PA) loose intermediate layer and PA ultra-thin dense layer were introduced to fabricate PA/O-NGO/polyphenylene sulfide composite membrane with sandwich structure via multi-step interfacial polymerization (MS-IP) method. The selective permeation mechanism of ultrathin layer produced by different aqueous monomers (PIP and MPD) was studied, the effect of its physicochemical structure on the relief of concentration polarization phenomenon and the breakthrough of trade-off effect was analyzed. The ultra-thin and dense PA layer mainly played the role of interception and shortened the water molecular penetration path. In the retention test of metal salt solution, compared with the rough surface, it was found that the smooth surface was more conducive to the diffusion of intercepted metal ions into the feed solution, thus alleviating the concentration polarization phenomenon.

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Metadata
Title
A PA/O-NGO/PPS sandwich composite membrane prepared via multi-step interfacial polymerization for desalination
Authors
Yuan Gao
Xinghai Zhou
Maliang Zhang
Zhenhuan Li
Publication date
09-04-2021
Publisher
Springer US
Published in
Journal of Materials Science / Issue 20/2021
Print ISSN: 0022-2461
Electronic ISSN: 1573-4803
DOI
https://doi.org/10.1007/s10853-021-06062-2

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