Abstract A novel filter paper (FP) with superhydrophobicity and superoleophilicity was prepared via adsorption and immersion process for the separation of surfactant-stabilized water-in-oil emulsions. The realization of superhydrophobicity with a water contact angle of 153° benefits from the Cu(OH)2 nanostructure formed on FP and subsequent stearic acid (STA) modification. The three-dimensional network of FP as well as superhydrophobic and superoleophilic property can facilitate the demulsification of emulsified oil, thus the only gravity-driven separations of various water-in-oil emulsions with high oil flux and good recyclability have been achieved. The superhydrophobic FP can be massively applied in emulsion separation due to its facile preparation and superior performance.

中文翻译：

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一种用于有效分离油包水乳液的具有超疏水性的​​新型 Cu(OH) 2 涂层滤纸

摘要 通过吸附和浸渍工艺制备了一种具有超疏水和超亲油性的新型滤纸（FP），用于分离表面活性剂稳定的油包水乳液。水接触角为 153° 的超疏水性的​​实现得益于在 FP 上形成的 Cu(OH)2 纳米结构和随后的硬脂酸 (STA) 改性。FP的三维网络以及超疏水和超亲油的特性可以促进乳化油的破乳，从而实现了各种油包水乳液的高通量和良好的可回收性的重力驱动分离。超疏水FP由于其制备简便、性能优越，可广泛应用于乳液分离。