With the increasing occurrences of industrial oily wastewater emissions and oil spills, considerable efforts have been made to develop superhydrophobic materials for oil–water separation. Herein, we report a facile dipping-UV curing approach to fabricate superhydrophobic organosilicon/silica hybrid coating with crosslinked network structure on cotton fabric via thiol-ene reaction between thiol-functionalized silica nanoparticles (SH-SiO₂ NPs) and acryloyloxy-terminated polydimethylsiloxane (A-PDMS-A). With the optimized mass ratio of SH-SiO₂ NPs to A-PDMS-A at 0.2, the water contact angle of the fabric reached 155° and the water sliding angle was 8°, exhibiting excellent water repellency. Furthermore, the superhydrophobic cotton fabric possessed self-cleaning ability and good surface stability. In addition, the fabric was successfully applied for effective oil–water separation, and the separation efficiency reached up to 99.06%. Even after 15 cycles, the separation efficiency still maintained 98.93%, demonstrating excellent reusability. Our findings stand out as a new tool to fabricate UV-curable superhydrophobic coating on cotton fabric for efficient oil–water separation.

随着工业含油废水排放和溢油事件的增加，已经做出了巨大的努力来开发用于油水分离的超疏水材料。在这里，我们报告了一种简便的浸渍-UV固化方法，通过硫醇官能化的二氧化硅纳米颗粒（SH-SiO ₂ NPs）和丙烯酰氧基封端的聚二甲基硅氧烷（巯基）之间的硫醇-烯反应在棉织物上制备具有交联网络结构的超疏水有机硅/二氧化硅杂化涂层A-PDMS-A）。优化的SH-SiO ₂质量比NP至A-PDMS-A为0.2，织物的水接触角达到155°，水滑移角为8°，表现出优异的拒水性。此外，超疏水棉织物具有自清洁能力和良好的表面稳定性。此外，该织物已成功用于有效的油水分离，分离效率高达99.06％。即使经过15个循环，分离效率仍保持98.93％，显示出极好的可重复使用性。我们的发现是一种在棉织物上制造可紫外线固化的超疏水涂层以实现有效的油水分离的新工具。