Journal
SURFACE & COATINGS TECHNOLOGY
Volume 313, Issue -, Pages 55-62Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.surfcoat.2017.01.047
Keywords
Underwater superoleophobicity; TiO2; Nanobelts; Oil/water separation; Aqueous pollutant degradation; Self-cleaning
Funding
- National Natural Science Foundation of China [20976055]
- cience and Technology Project of Panzhihua [2015CY-G-19]
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Separating oil from oily water and degrading the aqueous pollutants are two significant issues of wastewater treatment. In this work, a titanium mesh coated with W, N co-doped TiO2 nanobelts (WNTNBs) was prepared through a simple solution route, followed by a subsequent calcination. The hierarchical nanobelt structures on the mesh contributed to considerable surface roughness, resulting in the excellent superhydrophilicity and underwater superoleophobicity. The mesh could keep its wetting performance in corrosive environments such as highly saline, acidic and alkaline conditions, revealing good environmental stability. This durable mesh is efficient for separating oil from water with high separation efficiency, as well as degrading soluble dyes such as methylene blue (MB) in the water phase even under visible light irradiation. Moreover, the mesh possesses good selfcleaning property on the removal of aqueous insoluble oil on its surface in the presence of ultraviolet and visible light, making it more effective and promising in wastewater treatment. (C) 2017 Elsevier B.V. All rights reserved.
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