Zhang Song, Liang Zhidong, Chen Xing, Lu Linji, Lu Zengzheng, Liu Tao, Luo Bin, Liu Yanhua, Chi Mingchao, Wang Jinlong, Cai Chenchen, Gao Cong, Wang Shuangfei, Nie Shuangxi
School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, PR China.
Nano Lett. 2024 Sep 11;24(36):11319-11326. doi: 10.1021/acs.nanolett.4c03441. Epub 2024 Aug 29.
Biomimetic engineering surfaces featuring heterogeneous wettability are vital for atmospheric water harvesting applications. Existing research predominantly focuses on the coordinated regulation of surface wettability through structural and chemical modifications, often overlooking the prevalent triboelectric charge effect at the liquid-solid interface. In this work, we designed a heterogeneous wettability surface by strategic masking and activated its latent triboelectric charge using triboelectric brushes, thereby enhancing the removal and renewal of surface droplets. By examining the dynamic evolution of droplets, the mechanism of triboelectric enhancement in the water collection efficiency is elucidated. Leveraging this inherent triboelectric charge interaction, fog collection capacity can be augmented by 29% by activating the system for 5 s every 60 s. Consequently, the advancement of triboelectric charge-enhanced fog collection technology holds both theoretical and practical significance for overcoming the limitations of traditional surface wettability regulation.
具有异质润湿性的仿生工程表面对于大气水收集应用至关重要。现有研究主要集中于通过结构和化学修饰对表面润湿性进行协同调控，常常忽略了液固界面普遍存在的摩擦电荷效应。在这项工作中，我们通过策略性掩膜设计了一种异质润湿性表面，并使用摩擦刷激活其潜在的摩擦电荷，从而增强表面液滴的去除和更新。通过研究液滴的动态演变，阐明了水收集效率中摩擦增强的机制。利用这种固有的摩擦电荷相互作用，每60秒激活系统5秒，可使雾收集能力提高29%。因此，摩擦电荷增强型雾收集技术的进步对于克服传统表面润湿性调控的局限性具有理论和实际意义。
