MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology , Harbin 150001, P. R. China.
Natural Science Research Center, Academy of Fundamental and Interdisciplinary Sciences, Harbin Institute of Technology , Harbin 150001, P. R. China.
ACS Nano. 2018 Feb 27;12(2):1074-1082. doi: 10.1021/acsnano.7b05813. Epub 2018 Jan 17.
Recently, smart interfacial materials that can reversibly transit between the superhydrophobicity and superhydrophilicity have aroused much attention. However, all present performances happen in air, and to realize such a smart transition in complex environments, such as oil, is still a challenge. Herein, TiO nanotube arrays with switchable transition between the superhydrophobicity and superhydrophilicity in oil are reported. The switching can be observed by alternation of UV irradiation and heating process, and the smart controllability can be ascribed to the cooperative effect between the surface nanostructures and the chemical composition variation. By using the controllable wetting performances, some applications such as under-oil droplet-based microreaction and water-removal from oil were demonstrated on our surface. This paper reports a surface with smart water wettability in oil, which could start some fresh ideas for wetting control on interfacial materials.
最近，能够在超疏水性和超亲水性之间可逆转变的智能界面材料引起了广泛关注。然而，目前所有的性能都发生在空气中，要在复杂环境（如油中）中实现这种智能转变仍然是一个挑战。在此，报道了一种在油中具有超疏水和超亲水之间可切换转变的 TiO2纳米管阵列。通过交替进行 UV 辐照和加热过程可以观察到这种转变，智能可控性可以归因于表面纳米结构和化学成分变化的协同作用。通过利用可控的润湿性能，在我们的表面上展示了一些应用，例如基于油滴的微反应和从油中除水。本文报道了一种在油中具有智能润湿性的表面，这可能为界面材料的润湿控制带来一些新的思路。
