Desert Beetle-Inspired Superwettable Patterned Surfaces for Water Harvesting

文献类型： 外文期刊

第一作者： Yu, Zhenwei

作者： Yu, Zhenwei;Yun, Frank F.;Dou, Shixue;Wang, Xiaolin;Wang, Yanqin;Yao, Li;Yao, Li;Liu, Kesong;Jiang, Lei;Jiang, Lei

作者机构：

关键词： bioinspired;fog collection;superhydrophilic;superhydrophobic;wettability

期刊名称：SMALL （ 影响因子：13.281； 五年影响因子：12.463 ）

ISSN： 1613-6810

年卷期： 2017 年 13 卷 36 期

页码：

收录情况： SCI

摘要： With the impacts of climate change and impending crisis of clean drinking water, designing functional materials for water harvesting from fog with large water capacity has received much attention in recent years. Nature has evolved different strategies for surviving dry, arid, and xeric conditions. Nature is a school for human beings. In this contribution, inspired by the Stenocara beetle, superhydrophilic/superhydrophobic patterned surfaces are fabricated on the silica poly(dimethylsiloxane) (PDMS)-coated superhydrophobic surfaces using a pulsed laser deposition approach with masks. The resultant samples with patterned wettability demonstrate water-harvesting efficiency in comparison with the silica PDMS-coated superhydrophobic surface and the Pt nanoparticles-coated superhydrophilic surface. The maximum water-harvesting efficiency can reach about 5.3 g cm(-2) h(-1). Both the size and the percentage of the Pt-coated superhydrophilic square regions on the patterned surface affect the condensation and coalescence of the water droplet, as well as the final water-harvesting efficiency. The present water-harvesting strategy should provide an avenue to alleviate the water crisis facing mankind in certain arid regions of the world.

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