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- W4281921567 endingPage "102887" @default.
- W4281921567 startingPage "102887" @default.
- W4281921567 abstract "Polytetrafluoroethylene (PTFE) hydrophobic membranes used in direct contact membrane distillation (DCMD) processes were prone to fouling and wetting by oil and surfactants, which hampered their broad industrial application. In this work, a new Janus composite membrane was developed by modifying UiO-66-NH2 with polyvinyl alcohol (PVA) as a cross-linking agent and immobilizing the modified UiO-66-NH2 on the PTFE membrane by vacuum filtration. By tuning the ratio of PVA to MOF, an optimally proportioned Janus membrane was obtained, and its performance was tested in DCMD experiments through the use of a sodium chloride feed solution containing hexadecane and sodium dodecyl sulfate. The top layer of this Janus membrane exhibited underwater oleophobicity (130.1 ± 0.96°) and hydrophilicity in the air (54.0 ± 0.92°), while the bottom layer is hydrophobic (132.3 ± 0.97°). Compared to the pristine PTFE membrane, the modified Janus membrane demonstrated promising resistance to both membrane fouling and wetting of oils and surfactants. The desalination rate of 99.99% was still achieved within 24 h with the conductivity remaining lower than 10 μS/cm and the flux maintained at 21.3 L/(m2·h). As a result, the Janus composite membrane developed in this study was shown to be a prospective alternative for treating wastewater containing oily substances and surfactants in a resourceful manner." @default.
- W4281921567 created "2022-06-13" @default.
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- W4281921567 date "2022-08-01" @default.
- W4281921567 modified "2023-10-12" @default.
- W4281921567 title "UiO-66-NH2/PVA composite Janus membrane with a dense hydrophilic surface layer for strong resistance to fouling and wettability in membrane distillation" @default.
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- W4281921567 doi "https://doi.org/10.1016/j.jwpe.2022.102887" @default.
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