MXene-Coated Mesh Membrane with Underwater Superoleophobicity for High-efficiency Oil-water Separation

Owing to the hydrophilicity and flake-like structure of the two-dimensional (2D) MXene (Ti3C2Tx), the 2D MXene nanosheets were coated onto the stainless steel mesh to fabricate a novel hydrophilic and underwater superoleophobic mesh membrane with a corrugated micro- and nanostructure surface. For a series of oil-water mixtures, the MXene-caoted mesh membrane can achieve gravity-driven high-efficiency oil-water separation with excellent separation efficiency of over 99.99% , residual oil content of less than 4 mg/L in collected water, and water flux up to 57. 52 L . m(-2) . s(-1). In addition, MXene-coated mesh membranes display outstanding stability and cycleability.