A simple way to achieve bioinspired hybrid wettability surface with micro/nanopatterns for efficient fog collection
Top Cited Papers
- 14 September 2017
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Nanoscale
- Vol. 9 (38), 14620-14626
- https://doi.org/10.1039/c7nr05683d
Abstract
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.Funding Information
- National Natural Science Foundation of China (91323301 and 51505505)
- China Postdoctoral Science Foundation (2015M572264 and 2016T90757)
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