Article ID Journal Published Year Pages File Type
4988525 Journal of Membrane Science 2017 24 Pages PDF
Abstract
Among the various environmental problems, that of water pollution is undoubtedly one of the most severe that mankind faces; this global challenge requires efficient separation of surfactant-stabilized oil/water emulsions to be solved. Here, a separation membrane with unique wettability is prepared by integrating polyacrylonitrile nanofibers with nanocrystalline zeolite imidazole framework (ZIF-8). The membrane shows prewetting-induced superoleophobicity under water and superhydrophobicity under oil. Surfactant-stabilized oil/water emulsions are effectively separated by the hierarchically nanostructured composite membrane. The hybrid membrane displays a high oil contact angle under water (159°) and high water contact angle under oil (155°), resulting in fast separation dynamics and high separation efficiency. This membrane represents a new approach to exploit multifunctional materials for water remediation.
Related Topics
Physical Sciences and Engineering Chemical Engineering Filtration and Separation
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