题目：Robust and durable superhydrophobic cotton fabrics via a one-step solvothermal method for ef?cient oil/water separation

摘要：Traditional superhydrophobic cotton fabrics (CF) demonstrate various advantages such as self cleaning, water repelling and ef?cient oil/water separation capacity but limited practical applications due to their poor mechanical robustness and environmental durability. In this work, robust and durable superhydrophobic polydivinylbenzene (PDVB) coated CF (PDVB@CF) are fabricated via a simple one-step, ?uorine-free, and inorganic nanoparticlefree solvothermal method. The PDVB@CF displays excellent chemical resistance without losing superhydrophobicity after immersing in various organic solvents, strong acid and alkali solutions for a long time. The PDVB@CF shows excellent mechanical robustness to resist sandpaper abrasion and ultrasonication treatment. Furthermore, the PDVB@CF exhibits outstanding high and low temperature resistances since the contact angle of either acidic or alkali droplets is greater than 150 after isothermal treatment at 200 C or immersion in liquid nitrogen for 3 h. The PDVB@CF is very ef?cient in separating water mixtures with various oily compounds with separation ef?ciency of higher than 98% and ?ux up to 56 k L m-2 h-1 depending on characteristics of the oils. In addition, the PDVB@CF shows excellent recyclability with superhydrophobicity and separation ef?ciency that remained after 10 separation cycles. The PDVB@CF with excellent robustness and durability exhibits potential utility in oil/water separation even under some harsh conditions.

链接：https://link.springer.com/article/10.1007/s10570-019-02267-6