Journal
NANOSCALE
Volume 7, Issue 10, Pages 4553-4558Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5nr00026b
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Funding
- NSFC [21303169]
- Fundamental Research Funds for the Central Universities [2652013115]
- Beijing Nova Program [Z141103001814064]
- Beijing Specific Project to Foster Elitist [2013D009015000001]
- Open Project of State Key Laboratory of Chemical Resource Engineering [CRE-2013-C-201]
- National High Technology Research and Development Program of China (863 Program) [2012AA06A109]
- special co-construction project of Beijing city education committee
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In this paper, we present a facile method for the fabrication of a functionally integrated device, which has the multi-functions of the oil-containment boom, oil-sorption material, and water/oil-separating film, through a single immersion step in an ethanol solution of stearic acid. During the simple immersion process, the two dominant factors of superhydrophobicity, surface roughness and low-surface-energy coatings, could be accomplished simultaneously. The as-prepared functionally integrated device with superhydrophobicity/superoleophilicity displayed a lower density than that of water, such that it could float on water and act as an oil-containment boom; an efficient oil-absorbing property, which was attributed to the capillary effect caused by micrometer-sized pore structures and could be used as oil-sorption materials; a high oil/water separating efficiency which was suitable for water/oil-separating film. In this way, the functions of oil collection, absorption, and water/oil separation are integrated into a single device, and these functions could work independently, reducing the cost in terms of energy consumption and being versatile for a wide range of applications.
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