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A simple way to achieve bioinspired hybrid wettability surface with micro/nanopatterns for efficient fog collection

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.

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Publication details

The article was received on 02 Aug 2017, accepted on 13 Sep 2017 and first published on 14 Sep 2017


Article type: Paper
DOI: 10.1039/C7NR05683D
Citation: Nanoscale, 2017, Accepted Manuscript
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    A simple way to achieve bioinspired hybrid wettability surface with micro/nanopatterns for efficient fog collection

    K. Yin, H. Du, X. Dong, C. Wang, J. Duan and J. He, Nanoscale, 2017, Accepted Manuscript , DOI: 10.1039/C7NR05683D

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