Journal
CHINESE JOURNAL OF CHEMICAL PHYSICS
Volume 32, Issue 5, Pages 635-642Publisher
CHINESE PHYSICAL SOC
DOI: 10.1063/1674-0068/cjcp1810233
Keywords
Superhydrophobicity; Micro; nanostructure; Tungsten trioxide; Self-cleaning; Oil; water separation
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Funding
- National Natural Science Foundation of China [21776319, 21476269]
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In this work, a simple method was carried out to successfully fabricate superoleophilic and superhydrophobic N-dodecyltrimethoxysilane@tungsten trioxide coated copper mesh. The as-fabricated copper mesh displayed prominent superoleophilicity and superhydrophobicity with a huge water contact angle about 154.39 degrees and oil contact angle near 0 degrees. Moreover, the coated copper mesh showed high separation efficiency approximately 99.3%, and huge water flux about 9962.3 L center dot h(-1)center dot m(-2), which could be used to separate various organic solvents/water mixtures. Furthermore, the coated copper mesh showed favorable stability that the separation efficiency remained above 90% after 10 separation cycles. Benefiting from the excellent photocatalytic degradation ability of tungsten trioxide, the coated copper mesh possessed the self-cleaning capacity. Therefore, the mesh contaminated with lubricating oil could regain superhydrophobic property, and this property of self-cleaning permitted that the fabricated copper mesh could be repeatedly used for oil and water separation.
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