In-situ silica decorated aliphatic polyketone membrane with high performance for oil/water separation

摘要

Oil/water separation has attracted more attention in both of academia and industry due to the increased amount of oily wastewater from the industrial process and frequent oil spill accidents,causing fatal damage to ecosystem and people's health.How to treat the oily wastewater has become a big challenge all over the world.In this work,an innovative aliphatic polyketone(PK)membrane surrounded by hydrophilic silica nanoparticles with hierarchical micro/nanoscale structure was developed by a APTESassistance deposition process.With the APTES help to make the PK membrane positive charged,the negative charged silica was uniformed deposited on the membrane surface.The resultant silica-d-PK membrane displays superhydrophilicity,ultralow oil-adhesion underwater superoleophobicity,and distinctive self-cleaning ability,as well as excellent solvent resistance.More important,the membrane shows ultrafast and anti-oil-fouling separation performances for different oil-in-water emulsions.Therefore,it is very promising for large-scale applications.