纳米技术
材料科学
润湿
制作
纳米颗粒
接触角
化学工程
飞秒
激光器
复合材料
光学
医学
物理
工程类
病理
替代医学
作者
Kai Yin,Haifeng Du,Xinran Dong,Cong Wang,Ji’an Duan,Jun He
出处
期刊:Nanoscale
[The Royal Society of Chemistry]
日期:2017-01-01
卷期号:9 (38): 14620-14626
被引量:254
摘要
Fog collection is receiving increasing attention for providing water in semi-arid deserts and inland areas. Inspired by the fog harvesting ability of the hydrophobic-hydrophilic surface of Namib desert beetles, we present a simple, low-cost method to prepare a hybrid superhydrophobic-hydrophilic surface. The surface contains micro/nanopatterns, and is prepared by incorporating femtosecond-laser fabricated polytetrafluoroethylene nanoparticles deposited on superhydrophobic copper mesh with a pristine hydrophilic copper sheet. The as-prepared surface exhibits enhanced fog collection efficiency compared with uniform (super)hydrophobic or (super)hydrophilic surfaces. This enhancement can be tuned by controlling the mesh number, inclination angle, and fabrication structure. Moreover, the surface shows excellent anti-corrosion ability after immersing in 1 M HCl, 1 M NaOH, and 10 wt% NaCl solutions for 2 hours. This work may provide insight into fabricating hybrid superhydrophobic-hydrophilic surfaces for efficient atmospheric water collection.
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