期刊
JOURNAL OF COLLOID AND INTERFACE SCIENCE
卷 548, 期 -, 页码 123-130出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2019.04.031
关键词
Superoleophobic; Superhydrophilic; Emulsions; Oil-water separation; Oil-spills
资金
- National Natural Science Foundation of China [51505108, 51475118]
- Key laboratory of Micro-systems and Micro-structures Manufacturing of Ministry of Education, Harbin Institute of Technology [2017KM009]
- China Scholarship Council
Oil contamination is pressing environmental and natural resource issues. Oil-water separation technology can be used for water purification. Traditional methods are either time consuming or energy intensive. Bioinspired materials with combination of affinity and/or repellence towards oil and water in mesh based methods have attracted widespread attention in the oil-water separation. Among existing materials, superhydrophobic/superoleophilic materials are prone to contamination by oil. Superhydrophilic/underwater superoleophobic materials can only operate underwater which restricts the practical use. In contrast, superoleophobic/superhydrophilic materials are desirable for oil-water separation. However, traditional mesh-based method cannot be used for separation of emulsions since the dispersed micro droplets can easily pass through the mesh pores. Superhydrophobic/superoleophilic cotton has been used for separation of water-in-oil emulsions. In this study, a facile method to fabricate bioinspired superoleophobic/superhydrophilic cotton was developed. The functionalized cotton exhibits an oil repellent and water-wetting behavior and is capable of separating both immiscible oil-water mixtures and also oil-in-water emulsions without oil contamination. This developed cotton is of interest for various applications. (C) 2019 Elsevier Inc. All rights reserved.
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