Highly crosslinked, chlorine tolerant polymer network entwined graphene oxide membrane for water desalination
- Title
- Highly crosslinked, chlorine tolerant polymer network entwined graphene oxide membrane for water desalination
- Author
- 김승주
- Issue Date
- 2017-01
- Publisher
- ROYAL SOC CHEMISTRY
- Citation
- JOURNAL OF MATERIALS CHEMISTRY A, v. 5, no. 4, page. 1533-1540
- Abstract
- Graphene and its derivatives are very attractive for constructing membranes for high-efficiency separation applications including water purification and desalination. To develop practical desalination membranes, strictly controlled inter-layer distance of graphene-based laminates and strong adhesion of graphene-based selective layers onto a porous polymer substrate are required to provide high salt rejection properties and desirable mechanical durability with chlorine tolerance in membrane processes. However, there is a difficulty in stabilizing graphene nanosheets as a membrane selective layer for the desalination process and controlling their interlayer distance. In this work, we demonstrate the successful fabrication of a graphene-based thin-film composite membrane by integrating graphene oxide (GO) nanosheets into a highly crosslinked polymer network on a porous polymer substrate. The resulting poly(N-isopropylacrylamide-co-N, N'-methylene-bisacrylamide) entwined GO thin-film composite membrane has a main GO interlayer spacing of 0.48 nm and a GO-polymer thin film of less than 40 nm thick and shows excellent water flux (25.8 L m(-1) h(-1)) and salt rejection (a NaCl rejection of 99.9%), alongside excellent mechanical stability and chlorine tolerance for the forward osmosis process. This polymer network entwined GO thin-film composite can be effectively tailored as a platform material for developing high-performance osmosis desalination membranes for industrial application.
- URI
- https://pubs.rsc.org/en/content/articlelanding/2017/TA/C6TA07350F#!divAbstracthttps://repository.hanyang.ac.kr/handle/20.500.11754/105164
- ISSN
- 2050-7488; 2050-7496
- DOI
- 10.1039/c6ta07350f
- Appears in Collections:
- CENTER FOR CREATIVE CONVERGENCE EDUCATION[S](창의융합교육원) > ETC
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