Wang Ruijie, Liu Pengchang, Yu Xiaoyan, Sun Xinchao, Lai Hua, Cheng Zhongjun
State Key Laboratory of Urban Water Resource & Environment, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, P. R. China.
41 Institute of the Sixth Research Institute, China Aerospace Science and Industry Corporation Institution, Hohhot, Inner Mongolia, 010000, P. R. China.
Chempluschem. 2022 Jan;87(1):e202100491. doi: 10.1002/cplu.202100491.
Recently, materials with controllable superwettability have attracted much attention. However, almost all studies focused on controlling wetting of water and oil; research on underwater gas bubble wetting control is still rare. Herein, we report a mesh film prepared by coating polypyrrole (PPy) film on Ti mesh. Briefly, the film mesh is underwater superaerophilic when PPy is doped with perfluorooctanesulfonate ions (PFOS ), and becomes underwater superaerophobic as the PFOS are removed. The transition of the wettability can be triggered by electrical stimuli, which is attributed to the cooperative effect between the rough structure and chemical components variation. The controllable wettability allows adjustable bubble permeation. It can be envisioned that the film will provide potential applications in the future, such as underwater bubble capture/release and microfluidic devices.
近年来，具有可控超润湿性的材料备受关注。然而，几乎所有研究都集中在控制水和油的润湿性上；关于水下气泡润湿性控制的研究仍然很少。在此，我们报道了一种通过在钛网上涂覆聚吡咯（PPy）薄膜制备的网膜。简而言之，当PPy掺杂全氟辛烷磺酸离子（PFOS）时，网膜在水下具有超亲气性，而当PFOS被去除时则变为水下超疏气性。润湿性的转变可由电刺激触发，这归因于粗糙结构和化学成分变化之间的协同效应。可控的润湿性允许调节气泡渗透。可以设想，该薄膜未来将提供潜在的应用，如水下气泡捕获/释放和微流控装置。
