Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/43293
Title: Biomimetic water-collecting fabric with light-induced superhydrophilic bumps
Authors: Wang, Y
Wang, X
Lai, C
Hu, H 
Kong, Y
Fei, B 
Xin, JH 
Keywords: Biomimetic water collection
Laplace pressure gradient
Light-induced superhydrophilic
Raised structure
Wettability gradient
Issue Date: 2016
Publisher: American Chemical Society
Source: ACS applied materials and interfaces, 2016, v. 8, no. 5, p. 2950-2960 How to cite?
Journal: ACS applied materials and interfaces 
Abstract: To develop an efficient water-collecting surface that integrates both fast water-capturing and easy drainage properties is of high current interest for addressing global water issues. In this work, a superhydrophobic surface was fabricated on cotton fabric via manipulation of both the surface roughness and surface energy. This was followed by a subsequent spray coating of TiO2 nanosol that created light-induced superhydrophilic bumps with a unique raised structure as a result of the interfacial tension of the TiO2 nanosol sprayed on the superhydrophobic fiber surface. These raised TiO2 bumps induce both a wettability gradient and a shape gradient, synergistically accelerating water coalescence and water collection. The in-depth study revealed that the quantity and the distribution of the TiO2 had a significant impact on the final water collection efficiency. This inexpensive and facilely fabricated fabric biomimicks the desert beetle's back and spider silk, which are capable of fog harvesting without additional energy consumption.
URI: http://hdl.handle.net/10397/43293
ISSN: 1944-8244 (print)
1944-8252 (online)
DOI: 10.1021/acsami.5b08941
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