Nanowire-Haired Inorganic Membranes with Superhydrophilicity and Underwater Ultralow Adhesive Superoleophobicity for High-Efficiency Oil/Water Separation

• Published in: Advanced materials (Weinheim) Vol. 25; no. 30; pp. 4192 - 4198
• Main Authors: Zhang, Feng, Zhang, Wen Bin, Shi, Zhun, Wang, Dong, Jin, Jian, Jiang, Lei
• Format: Journal Article
• Language: English
• Published: Weinheim WILEY-VCH Verlag 14.08.2013; WILEY‐VCH Verlag
• Subjects: Adhesiveness; Adhesives; Adsorption; Copper - chemistry; Hydrophobic and Hydrophilic Interactions; Hydroxides - chemistry; Materials Testing; Membranes; Membranes, Artificial; Nanocomposites; Nanomaterials; Nanostructures - chemistry; Nanostructures - ultrastructure; nanowire-coated membrane; Nanowires; oil/water separation; Oils - chemistry; Oils - isolation & purification; Particle Size; Separation; Solvents; superhydrophilic and underwater superoleophobic; Surface Properties; Ultrafiltration - methods; ultralow adhesion; Underwater; Water - chemistry; ultralow adhesion; superhydrophilic and underwater superoleophobic; oil/water separation; nanowire-coated membrane
• ISSN: 0935-9648; 1521-4095
• DOI: 10.1002/adma.201301480

A novel all‐inorganic Cu(OH)2 nanowire‐haired membrane with superhydrophilicity and underwater ultralow adhesive superoleophobicity is fabricated by a facile surface oxidation of copper mesh that allows effective separation of both immiscible oil/water mixtures and oil‐in‐water emulsions solely driven by gravity, with extremely high separation efficiency. The all‐inorganic membrane exhibits superior solvent and alkaline resistance and antifouling property compared to organic‐based membranes.