A Bioinspired Slippery Surface with Stable Lubricant Impregnation for Efficient Water Harvesting
A Bioinspired Slippery Surface with Stable Lubricant Impregnation for Efficient Water Harvesting
复制标题
具有稳定润滑剂浸渍的仿生光滑表面，可实现高效集水
DOI：
10.1021/acsami.0c00234
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发表时间：
2020-03-11
影响因子：
9.5
通讯作者：
Wang, Yu-Zhong
中科院分区：
文献类型：
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作者：
Feng, Rui;Xu, Chen;Wang, Yu-Zhong
受猪笼草的启发，光滑的液体注入多孔表面（SLIPS）最近引起了越来越多的关注，用于水滴的定向运输和运动操纵。然而，注入的润滑剂通常是不稳定的，并且在应用期间容易偏离这些表面，导致对雾捕获和液滴运动的失控以及水安全的严重风险。在这里，一个高度稳定的SLIPS具有改善的润滑剂存储开发通过协同klS构建规则的微枕形和纳米粒子的结构设计。值得注意的是，在微观结构的基础上，纳米结构的存在显示出显著增加的毛细管力以及抑制在水收集期间的润滑剂损失的巨大贡献。仿生SLIPS具有稳定的表面光滑性，能很好地保持雾中水滴的逐滴聚结和高效的集水性能。集水效率高达852 mg cm（-1）h（-1），在连续20 h内保持稳定。这种结构协同作用的基本说明可以进一步应用于构建更多新的具有稳定光滑表面/界面的水操纵和收获平台。
Inspired by Nepenthes pitcher plants, slippery liquid-infused porous surfaces (SLIPS) have recently attracted increasing attention for directional transport and movement manipulation of water droplets. Nevertheless, infused lubricants are generally instable and easy to deviate from such surfaces during applications, resulting in the lost control on the fog capture and motion of droplets as well as serious risk of water safety. Here, a highly stable SLIPS with improved lubricant storage is developed through the structure design of synergistically klS constructing regular micro-pincushion and nanoparticles. Notably, on the basis of the microstructure, the presence of nano-architecture shows great contribution to obviously increased capillary force as well as suppressed lubricant loss during water collection. Featuring the stable surface-slippery property, the biomimetic SLIPS displays well maintained dropwise coalescence of water from fog and efficient water harvesting performance. The water collection efficiency is as high as 852 mg cm(-1) h(-1) and is stable within continuous 20 h application. This fundamental illustration of structural synergism can be further applied to construct more new water manipulation and harvesting platforms with stably slippery surfaces/interfaces.