Li Mengwei, Xie Shangzhen, Tian Guangyi, Chen Guopeng, Guo Zhiguang
Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei University, Wuhan, Hubei 430062, People's Republic of China.
State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, Gansu 730000, People's Republic of China.
ACS Appl Mater Interfaces. 2024 Aug 14;16(32):42931-42941. doi: 10.1021/acsami.4c08254. Epub 2024 Aug 5.
Water scarcity is a pressing issue in arid and semi-arid regions, making fog harvesting a promising method for water collection. However, enhancing the rate of fog harvesting remains a challenge. Controlling the movement of droplets on functional surfaces is crucial for the development of effective water-harvesting devices. In this study, a three-dimensional (3D) fog-harvesting device with mixed wettability is fabricated using a combination of physical and chemical techniques. With inspiration drawn from natural organisms, such as the desert beetle and , which can both live in low humidity, a copper substrate with a leaf-shaped wedge superhydrophilic structure and flat superhydrophobic regions is fabricated for fog harvesting. The modified surface results in a maximum 49.89% improvement in fog-harvesting efficiency compared to the original copper substrate. The synergistic effect of the 3D structure and mixed wettability of this study offers an idea for improving fog collection efficiency, with potential implications for energy sustainability water resources.
水资源短缺是干旱和半干旱地区的一个紧迫问题，这使得雾收集成为一种很有前景的集水方法。然而，提高雾收集速率仍然是一个挑战。控制功能表面上液滴的运动对于开发有效的集水装置至关重要。在本研究中，采用物理和化学技术相结合的方法制造了一种具有混合润湿性的三维（3D）雾收集装置。从沙漠甲虫等能够在低湿度环境中生存的自然生物体中获得灵感，制备了具有叶形楔形超亲水结构和平坦超疏水区域的铜基板用于雾收集。与原始铜基板相比，改性表面的雾收集效率最高提高了49.89%。本研究中3D结构和混合润湿性的协同效应为提高雾收集效率提供了思路，对能源可持续性水资源具有潜在意义。
