Abstract
Abstract Underwater superoleophobic membranes for oil/water separation have made great progress. Nevertheless, there are still some challenges in the simple fabrication of inexpensive and eco-friendly membranes with underwater superoleophobicity. Herein, a simple and effective approach was proposed to fabricate the fabric with superhydrophilic and underwater superoleophobic performance. The developed fabric can be used as a membrane for gravity driven separation of a series of oils from water both in gentle environment and harsh environments (highly acidic, alkaline, and salty solutions), exhibiting high separation efficiency (>95.7%) and good recyclability. More importantly, the treated fabric is capable of separating oil-in-water emulsions driven only by the gravity with high efficiency (>92.8%) and high flux (2184–4588 L m −2 h −1 ). This study provides a simple strategy to fabricate underwater superoleophobic fabric for water purification and oily wastewater treatment.
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