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Membrane‐Based Strategy for Efficient Ionic Liquids/Water Separation Assisted by Superwettability
Author(s) -
Zhang Jiajing,
Liu Hongliang,
Jiang Lei
Publication year - 2017
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.201606544
Subject(s) - ionic liquid , membrane , wetting , materials science , contact angle , chemical engineering , porosity , porous medium , ionic bonding , organic chemistry , ion , chemistry , catalysis , biochemistry , engineering , composite material
Ionic liquids (ILs) acting as new functional solvents have significant impact in both synthetic and materials chemistry. However, the usage of volatile organic solvents in both synthesis and recycling of ILs usually imposes environmental issues. In this study, according to intrinsic wetting threshold theory, a membrane‐based approach assisted by superwettability is developed for efficient, convenient, and economical purification of water‐immiscible ILs. By precisely tailoring surface energy, the porous membrane is capable of hydrophobicity and superILphilicity (defined as IL contact angle close to zero), selectively allowing ILs to pass through. This kind of functional membrane can not only separate IL/water mixtures, but also IL/water systems containing inorganic salts, organic compounds, amino acids, and proteins.