Mussel Adhesive-Inspired Design of Superhydrophobic Nanofibrillated Cellulose Aerogels for Oil/Water Separation

文献类型： 外文期刊

第一作者： Gao, Runan

作者： Gao, Runan;Xiao, Shaoliang;Gan, Wentao;Li, Jian;Lu, Yun;Lu, Yun;Liu, Qi;Liu, Qi;Amer, Hassan;Rosenau, Thomas;Lu, Yun

作者机构：

关键词： Nanofibrillated cellulose; Polydopamine; Octadecylamine; Aerogel; Superhydrophobic; Oil absorption

期刊名称：ACS SUSTAINABLE CHEMISTRY & ENGINEERING （ 影响因子：8.198； 五年影响因子：8.471 ）

ISSN： 2168-0485

年卷期： 2018 年 6 卷 7 期

页码：

收录情况： SCI

摘要： Inspiration from biomimetics-the chemistry of mussel adhesives-was taken for imparting superhydrophobic properties to nanofibrillated cellulose (NFC) matrices. A polydopamine (PDA) surface coating was introduced, acting as an anchor between the NFC scaffold and octadecylamine (ODA): PDA is coated onto the NFC scaffolds by its adhesive properties and the ODA is successfully attached to the PDA by a Schiff base reaction. The ultralow density of 6.04 mg/cm(3) combined with the high contact angle of 152.5 degrees endows the composite aerogel with superb buoyancy and excellent oil/water separation selectivity. Oil can be rapidly absorbed from a mixture of oil and water. In addition, the modified aerogel can take up a wide range of organic solvents, with the maximum absorption capacity reaching up to 176 g/g, depending on the density of the liquids. The novel superhydrophobic aerogel shows great potential as an adsorber for oil and solvent spills and as an oil-water separator.

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