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Title: A robust superhydrophobic TiO<inf>2</inf>NPs coated cellulose sponge for highly efficient oil-water separation
Authors: Li, Y
Lu, Z
Chen, L
Huang, L
Fan, M
Issue Date: 2017
Citation: Scientific Reports, 2017, 7 (1)
Abstract: © 2017 The Author(s). Oil-water separation has recently become a worldwide concern because of the increasing oil spill accidents and industrial oily wastewater generation. Herein, a facile method with the combined superhydrophobic coating and adhesive was used to fabricate superhydrophobic TiO 2 NPs coated cellulose sponge. The developed materials exhibited excellent superhydrophobicity (WCA = 171°) and superoleophilicity (OCA = 0°), which can separate a variety of oil-water mixtures, including chloroform, toluene, kerosene and other contaminations. A high separation efficiency up to 98.5% for chloroform-water mixture was achieved when used for gravity-driven oil/water separation test. More importantly, the as-prepared samples exhibited excellent chemical stability and mechanical abrasion resistance even towards various corrosive oil/water mixtures (such as strong acid, alkali solution and salt-water environment) or a strong abrasion by aluminium oxide sandpaper of 600 mesh. In addition, the separation efficiency remained above 93% even after 40 scratch cycles, and the materials could be reused with a stable hydrophobicity, indicating a strong potential for industrial application.
ISSN: 2045-2322
Appears in Collections:Dept of Mechanical and Aerospace Engineering Research Papers

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