In Situ Chemical Modification with Zwitterionic Copolymers of Nanofiltration Membranes: Cure for the Trade-Off between Filtration and Antifouling Performance

Xinyun Zhang; Jiayu Tian; Ruiyang Xu; Xiaoxiang Cheng; Xuewu Zhu; Ching Yoong Loh; Kaifang Fu; Ruidong Zhang; Daoji Wu; Huixe Ren; Ming Xie

doi:10.1021/acsami.2c05311

In Situ Chemical Modification with Zwitterionic Copolymers of Nanofiltration Membranes: Cure for the Trade-Off between Filtration and Antifouling Performance

Xinyun Zhang, Jiayu Tian, Ruiyang Xu, Xiaoxiang Cheng, Xuewu Zhu, Ching Yoong Loh, Kaifang Fu, Ruidong Zhang, Daoji Wu, Huixe Ren, Ming Xie

Research output: Contribution to journal › Article › peer-review

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Abstract

Breaking the trade-off between filtration performance and antifouling property is critical to enabling a thin-film nanocomposite (TFC) nanofiltration (NF) membrane for a wide range of feed streams. We proposed a novel design route for TFC NF membranes by grafting well-defined zwitterionic copolymers of [2-(methacryloyloxy)ethyl]dimethyl-(3-sulfopropyl)ammonium hydroxide (SBMA) and 2-aminoethyl methacrylate hydrochloride (AEMA) on the polyamide surfaces via an in situ surface chemical modification process. The successful grafting of a zwitterionic copolymer imparted the modified NF membranes with better surface hydrophilicity, a larger actual surface area (i.e., nodular structures), and a thinner polyamide layer. As a result, the water permeability of the modified membrane (i.e., TFC-10) was triple that of the pristine TFC membrane while maintaining high Na2SO4 rejection. We further demonstrated that the TFC-10 membrane possessed exceptional antifouling properties in both static adsorption tests and three cycles of dynamic protein and humic acid fouling tests. To recap, this work provides valuable insights and strategies for the fabrication of TFC NF membranes with simultaneously enhanced filtration performance and antifouling property.

Original language	English
Pages (from-to)	28842-28853
Number of pages	12
Journal	ACS Applied Materials and Interfaces
Volume	14
Issue number	25
Early online date	16 Jun 2022
DOIs	https://doi.org/10.1021/acsami.2c05311
Publication status	Published - 29 Jun 2022

Funding

This work was supported by the National Natural Science Foundation of China (no. 22008162), the China Postdoctoral Science Foundation (no. 2021M702016), the Jinan City-school Integration Development Strategy Project (no. JNSX2021048), the Shandong Provincial Major Scientific and Technological Innovation Project (MSTIP) (no. 2020CXGC011203, 2019JZZY020211), and the Natural Science Foundation of Shandong Province (no. ZR202102280483). We also thank the financial support from the Royal Society (IEC\NSFC\211021).

Keywords

antifouling properties
filtration performance
in situ surface modification
nanofiltration membrane
zwitterionic copolymer

ASJC Scopus subject areas

General Materials Science

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10.1021/acsami.2c05311Licence: CC BY

Clean mnuscript_Zhang et al_ACS AMIAccepted author manuscript, 4.27 MBLicence: CC BY-ND

https://pubs.acs.org/doi/10.1021/acsami.2c05311

Cite this

Zhang, X., Tian, J., Xu, R., Cheng, X., Zhu, X., Loh, C. Y., Fu, K., Zhang, R., Wu, D., Ren, H., & Xie, M. (2022). In Situ Chemical Modification with Zwitterionic Copolymers of Nanofiltration Membranes: Cure for the Trade-Off between Filtration and Antifouling Performance. ACS Applied Materials and Interfaces, 14(25), 28842-28853. https://doi.org/10.1021/acsami.2c05311

Zhang, X, Tian, J, Xu, R, Cheng, X, Zhu, X, Loh, CY, Fu, K, Zhang, R, Wu, D, Ren, H & Xie, M 2022, 'In Situ Chemical Modification with Zwitterionic Copolymers of Nanofiltration Membranes: Cure for the Trade-Off between Filtration and Antifouling Performance', ACS Applied Materials and Interfaces, vol. 14, no. 25, pp. 28842-28853. https://doi.org/10.1021/acsami.2c05311

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abstract = "Breaking the trade-off between filtration performance and antifouling property is critical to enabling a thin-film nanocomposite (TFC) nanofiltration (NF) membrane for a wide range of feed streams. We proposed a novel design route for TFC NF membranes by grafting well-defined zwitterionic copolymers of [2-(methacryloyloxy)ethyl]dimethyl-(3-sulfopropyl)ammonium hydroxide (SBMA) and 2-aminoethyl methacrylate hydrochloride (AEMA) on the polyamide surfaces via an in situ surface chemical modification process. The successful grafting of a zwitterionic copolymer imparted the modified NF membranes with better surface hydrophilicity, a larger actual surface area (i.e., nodular structures), and a thinner polyamide layer. As a result, the water permeability of the modified membrane (i.e., TFC-10) was triple that of the pristine TFC membrane while maintaining high Na2SO4 rejection. We further demonstrated that the TFC-10 membrane possessed exceptional antifouling properties in both static adsorption tests and three cycles of dynamic protein and humic acid fouling tests. To recap, this work provides valuable insights and strategies for the fabrication of TFC NF membranes with simultaneously enhanced filtration performance and antifouling property.",

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In Situ Chemical Modification with Zwitterionic Copolymers of Nanofiltration Membranes: Cure for the Trade-Off between Filtration and Antifouling Performance

Abstract

Funding

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ASJC Scopus subject areas

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Large chamber variable pressure scanning electron microscope (SEM)

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In Situ Chemical Modification with Zwitterionic Copolymers of Nanofiltration Membranes: Cure for the Trade-Off between Filtration and Antifouling Performance

Abstract

Funding

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

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Large chamber variable pressure scanning electron microscope (SEM)

Cite this