期刊
SCIENCE OF THE TOTAL ENVIRONMENT
卷 696, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.scitotenv.2019.133777
关键词
Graphene oxide; Copper mesh; Stable structure; Anti-oil-fouling; Underwater Superoleophobicity; Oil/water separation
资金
- National Natural Science Foundation of China [21621005, 21425730]
- National Key Research and Development Program of China [2018YFC1800705]
Developing underwater superoleophobic filtration materials with robust stability and excellent anti-oil-fouling performance in harsh environments is desired for high efficiency oil/water separation. In this work, irregular hydrophilic graphene oxide (GO) was adopted as a coating material to modify oxidized copper mesh with desired hierarchical surface roughness and hydrophilic composition through a novel in situ copper ion induced crosslinking method. The combination of microscale copper wires and nanoscale hydrophilic GO sheets endowed the resultant GO coated oxidized copper mesh (GO@CuO) with unique underwater superoleophobicity and excellent anti-oil-fouling property. Moreover, the mesh exhibited excellent stability in corrosive solutions with no apparent variations in wetting properties, indicating its good stability. The as-prepared GO@CuO mesh can be applied to separate oil/water mixtures with high efficiency (>99.49%) and good reusability. Due to the excellent anti-oil-fouling property, high separation efficiency, and good stability, the as-prepared underwater superoleophobic mesh could find broad applications in oil/water separations. (C) 2019 Elsevier B.V. All rights reserved.
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