Wang Xikui, Zeng Jia, Yu Xinquan, Liang Caihua, Zhang Youfa
Jiangsu Key Laboratory of Advanced Metallic Materials, School of Materials Science and Engineering, Southeast University Nanjing 211189 PR China
School of Electrical and Mechanical Engineering, Pingdingshan University Pingdingshan 467000 PR China.
RSC Adv. 2020 Jan 2;10(1):282-288. doi: 10.1039/c9ra09329j. eCollection 2019 Dec 20.
Fog collection from atmosphere is an effective way to solve the water resource crisis in arid or semi-arid areas. Inspired by the bumpy surface of the desert beetle, this work provides a beetle-like superamphiphobic coating by adding silicon carbide particles to nano-SiO superamphiphobic coating in proportion, which shows excellent superamphiphobic performance, high nucleation rate, efficient drop removal efficiency and recommendable fog collection effect. In this work, drop removal is facilitated by the collisions of water droplets between the array sheets, and when the as-prepared samples are placed parallel to each other and with a space of ∼2 mm, the jumping drop collisions between two sample surfaces could promote the departure of droplets, and the water collection rate of the collision surface increased by ∼217% compared to that of the non-collision surface, which provides a new idea to promote water droplet removal. This work findings are instrumental in water collection and have wide application prospects in desalination, heat transfer, anti-fogging and other fields.
从大气中收集雾气是解决干旱或半干旱地区水资源危机的有效途径。受沙漠甲虫崎岖表面的启发，这项工作通过将碳化硅颗粒按比例添加到纳米二氧化硅超疏水涂层中，制备了一种类似甲虫的超双疏涂层，该涂层具有优异的超双疏性能、高成核率、高效的液滴去除效率和可观的雾气收集效果。在这项工作中，阵列片之间的水滴碰撞促进了液滴的去除，当制备的样品相互平行放置且间距约为2毫米时，两个样品表面之间的跳跃液滴碰撞可促进液滴离开，碰撞表面的集水率比非碰撞表面提高了约217%，这为促进水滴去除提供了新思路。这项工作的发现有助于集水，在海水淡化、传热、防雾等领域具有广阔的应用前景。
