Sun Yihan, Huang Jinxia, Guo Zhiguang
State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China.
University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China.
Langmuir. 2020 Jun 2;36(21):5802-5808. doi: 10.1021/acs.langmuir.0c00504. Epub 2020 May 20.
Superhydrophobicity and underwater superoleophobicity demonstrate mutual advantages in various water-related interfacial applications. However, achieving such two opposite superwetting states on a single one-fabric surface without introducing any continuous external stimulus remains a great challenge. In this work, a chemical vapor deposition (CVD) modification methodology for achieving superhydrophobicity and underwater superoleophobicity on a single one-fabric surface is presented. The CVD methodology plays a crucial role in realizing such unusual superwetting properties that can be achieved through a moderate synergetic effect from hydrophobic and hydrophilic components in surface chemistry. Driven only by gravity, the as-prepared fabric with reasonable resistance to repeatable laundering cycles and long-time corrosive liquid submersion can be further applied in high-efficiency on-demand oil-water separation.
超疏水性和水下超疏油性在各种与水相关的界面应用中展现出相互优势。然而，在单一织物表面实现这两种相反的超润湿状态而不引入任何连续外部刺激仍然是一项巨大挑战。在这项工作中，提出了一种通过化学气相沉积（CVD）改性方法在单一织物表面实现超疏水性和水下超疏油性。CVD方法在实现这种不寻常的超润湿性能方面起着关键作用，这种性能可通过表面化学中疏水和亲水成分的适度协同效应来实现。仅在重力驱动下，所制备的织物具有耐重复洗涤循环和长时间腐蚀性液体浸没的合理性能，可进一步高效应用于按需油水分离。
