| 초록 |
Much progress has been made toward separating oil-water mixture arising from oily wastewater by superwetting membranes. However, low mechanical durability is a tricky issue. Herein, learning from natural cobweb structure, we designed the durable superhydrophobic carbon nanofiber-polydimethylsiloxane (CNFs-PDMS) network inlay-gated stainless steel mesh (SSM). Further, mimicking the surface structure of bufferfly wing scales, single-walled carbon nanotubes were introduced to the developed system (ESSM/CNFs-SWCNTs-PDMS) to separate smaller emulsions. The membranes exhibit excellent resistance to harsh treatments, especially mechanical abrasion. Mechanical damage to the core network was avoided by the protective support of mesh to guarantee good separation performance. The SSM/CNFs-PDMS membrane showed water-oil emulsion separation with flux up to 2970 L/m2h1 driven by self-gravity. The ESSM/CNFs-SWCNTs-PDMS can separate 100 nm emulsions. |
