A novel Cu(OH)2 coated filter paper with superhydrophobicity for the efficient separation of water-in-oil emulsions

作者：Cao, Chenyang; Cheng, Jiang^*

来源：Materials Letters, 2018, 217: 5-8.

DOI：10.1016/j.matlet.2018.01.026

• Surfaces
• Cu(OH)(2)
• Microstructure
• Superhydrophobicity
• Water-in-oil emulsion

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 degrees 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.

• 单位
  华南理工大学