Journal
SCIENTIFIC REPORTS
Volume 6, Issue -, Pages -Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/srep25414
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Funding
- Masdar Institute of Science and Technology (Masdar Institute), Abu Dhabi, UAE [02/MI/MIT/CP/11/07633/GEN/G/00]
- Massachusetts Institute of Science and Technology (MIT), Cambridge, MA USA [02/MI/MIT/CP/11/07633/GEN/G/00]
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Nanostructured materials with desired wettability and optical property can play an important role in reducing the energy consumption of oily water treatment technologies. For effective oily water treatment, membrane materials with high strength, sunlight-sensitive anti-fouling, relative low fabrication cost, and controllable wettability are being explored. In the proposed oily water treatment approach, nanostructured TiO2-coated copper (TNS-Cu) meshes are used. These TNS-Cu meshes exhibit robust superhydrophilicity and underwater oleophobicity (high oil intrusion pressure) as well as excellent chemical and thermal stability (approximate to 250 degrees C). They have demonstrated high separation efficiency (oil residue in the filtrate <= 21.3 ppm), remarkable filtration flux (>= 400 kL h(-1) m(-2)), and sunlight-sensitive anti-fouling properties. Both our theoretical analysis and experimental characterization have confirmed the enhanced light absorption property of TNS-Cu meshes in the visible region (40% of the solar spectrum) and consequently strong anti-fouling capability upon direct solar light illumination. With these features, the proposed approach promises great potential in treating produced oily wastewater from industry and daily life.
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