Engineering ultra-permeable and antifouling water channel-based biomimetic membranes toward sustainable water purification
Water channel-based biomimetic membranes (WBMs) are gaining increasing attention due to the effectiveness of water channels in enhancing water permeability and breaking the permselectivity trade-off. However, the ultra-permeable WBMs may suffer from severe membrane fouling issue because a high-water...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2023
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/170102 |
| _version_ | 1811692597475803136 |
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| author | Li, Xuesong Yang, Linyan Torres, Jaume Wang, Rong |
| author2 | School of Biological Sciences |
| author_facet | School of Biological Sciences Li, Xuesong Yang, Linyan Torres, Jaume Wang, Rong |
| author_sort | Li, Xuesong |
| collection | NTU |
| description | Water channel-based biomimetic membranes (WBMs) are gaining increasing attention due to the effectiveness of water channels in enhancing water permeability and breaking the permselectivity trade-off. However, the ultra-permeable WBMs may suffer from severe membrane fouling issue because a high-water flux tends to result in an accelerated fouling and thus compromises the benefits gained from the usage of water channels. Herein, a novel in-situ modification protocol was proposed to enhance the antifouling performance of ultra-permeable WBMs. The nanovesicles incorporated with aquaporin (AQP) water channels were functionalized with polyethylene glycol brushes (i.e., PEGylation) via a facile self-assembly approach and subsequently encapsulated in the selective layer of thin-film composite membranes through interfacial polymerization. The modification had minimal impact on the function of AQPs, resulting in WBMs with a high water permeance (∼8.2 LMH/bar) and good NaCl rejection (96.4%) comparable to the unmodified WBMs. Moreover, the in-situ modification drastically enhanced the surface hydrophilicity, which endowed the membrane with a superior fouling resistance to organic foulants. The improved fouling resistance ensured a more sustainable operation of ultra-permeable WBMs, particularly in scenarios that favor high water fluxes. This facile modification strategy provides an efficient way to fabricate ultra-permeable and antifouling WBMs for sustainable water purification. |
| first_indexed | 2024-10-01T06:38:19Z |
| format | Journal Article |
| id | ntu-10356/170102 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:38:19Z |
| publishDate | 2023 |
| record_format | dspace |
| spelling | ntu-10356/1701022023-08-28T15:32:10Z Engineering ultra-permeable and antifouling water channel-based biomimetic membranes toward sustainable water purification Li, Xuesong Yang, Linyan Torres, Jaume Wang, Rong School of Biological Sciences School of Civil and Environmental Engineering Nanyang Environment and Water Research Institute Singapore Membrane Technology Centre Engineering::Environmental engineering Water Channel Highly Permeable Membranes Water channel-based biomimetic membranes (WBMs) are gaining increasing attention due to the effectiveness of water channels in enhancing water permeability and breaking the permselectivity trade-off. However, the ultra-permeable WBMs may suffer from severe membrane fouling issue because a high-water flux tends to result in an accelerated fouling and thus compromises the benefits gained from the usage of water channels. Herein, a novel in-situ modification protocol was proposed to enhance the antifouling performance of ultra-permeable WBMs. The nanovesicles incorporated with aquaporin (AQP) water channels were functionalized with polyethylene glycol brushes (i.e., PEGylation) via a facile self-assembly approach and subsequently encapsulated in the selective layer of thin-film composite membranes through interfacial polymerization. The modification had minimal impact on the function of AQPs, resulting in WBMs with a high water permeance (∼8.2 LMH/bar) and good NaCl rejection (96.4%) comparable to the unmodified WBMs. Moreover, the in-situ modification drastically enhanced the surface hydrophilicity, which endowed the membrane with a superior fouling resistance to organic foulants. The improved fouling resistance ensured a more sustainable operation of ultra-permeable WBMs, particularly in scenarios that favor high water fluxes. This facile modification strategy provides an efficient way to fabricate ultra-permeable and antifouling WBMs for sustainable water purification. Published version This work is supported by National Natural Science Foundation of China (Grant No. 52100103), the Science and Technology Commission of Shanghai Municipality (Project of Science and Technology Program, Grant No. 20230713700), and the Fundamental Research Funds for the Central Universities (Grant No. 2022-4-YB-04). 2023-08-28T05:00:43Z 2023-08-28T05:00:43Z 2023 Journal Article Li, X., Yang, L., Torres, J. & Wang, R. (2023). Engineering ultra-permeable and antifouling water channel-based biomimetic membranes toward sustainable water purification. Journal of Membrane Science Letters, 3(2), 100049-. https://dx.doi.org/10.1016/j.memlet.2023.100049 2772-4212 https://hdl.handle.net/10356/170102 10.1016/j.memlet.2023.100049 2-s2.0-85162032228 2 3 100049 en Journal of Membrane Science Letters © 2023 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). application/pdf |
| spellingShingle | Engineering::Environmental engineering Water Channel Highly Permeable Membranes Li, Xuesong Yang, Linyan Torres, Jaume Wang, Rong Engineering ultra-permeable and antifouling water channel-based biomimetic membranes toward sustainable water purification |
| title | Engineering ultra-permeable and antifouling water channel-based biomimetic membranes toward sustainable water purification |
| title_full | Engineering ultra-permeable and antifouling water channel-based biomimetic membranes toward sustainable water purification |
| title_fullStr | Engineering ultra-permeable and antifouling water channel-based biomimetic membranes toward sustainable water purification |
| title_full_unstemmed | Engineering ultra-permeable and antifouling water channel-based biomimetic membranes toward sustainable water purification |
| title_short | Engineering ultra-permeable and antifouling water channel-based biomimetic membranes toward sustainable water purification |
| title_sort | engineering ultra permeable and antifouling water channel based biomimetic membranes toward sustainable water purification |
| topic | Engineering::Environmental engineering Water Channel Highly Permeable Membranes |
| url | https://hdl.handle.net/10356/170102 |
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