Superamphiphobic coatings have attracted tremendous interest from both academia and industry owing to their potential for self-cleaning and anti-fouling. However, many state-of-the-art superamphiphobic coatings are unable to preserve their super-repellent properties after prolonged liquid immersion. Thus, practical applications have so far been drastically limited. Herein, we highlight the immersion-stable performance of a nanostructurally-densified superamphiphobic coating possessing super liquid repellency to water and various low-surface-tension liquids. They exhibit excellent superoleophobic properties and functional stability even after prolonged immersion in mixed synthetic and vegetable oils. This immersion-stable superamphiphobic coating was also tested on household kitchen appliances under real-world conditions. Particularly inaccessible components such as the impeller and grease traps of range hoods were coated. Impellers demonstrate an improvement of up to 65% contamination-resistance while grease traps remained largely dry after collected oils were disposed. These findings highlight the potential of using nanostructurally-densified superampiphobic coatings as anti-fouling surfaces in the kitchen environment, with potential applications in petroleum extraction and oil transportation.

超疏水涂层具有自清洁和防污的潜力，已引起学术界和工业界的极大兴趣。但是，许多先进的超疏水涂层在长时间浸入液体后仍无法保持其超疏水性。因此，迄今为止，实际应用受到了极大的限制。在本文中，我们重点介绍了纳米结构致密的超疏油涂层的浸入稳定性能，该涂层对水和各种低表面张力液体具有超强的拒液性。即使长时间浸泡在混合的合成油和植物油中，它们也具有出色的超疏油性能和功能稳定性。这种浸入稳定的超疏水涂层也在实际条件下在家用厨房用具上进行了测试。尤其难以接近的组件（例如抽油烟机的叶轮和油脂收集器）被涂层。叶轮显示出最高可提高65％的耐污染性，而集油器处理后，隔油池仍保持干燥状态。这些发现强调了在厨房环境中使用纳米结构致密的超疏水涂层作为防污表面的潜力，并在石油提取和石油运输中具有潜在的应用。