4.5 Article

Continuous separation of oil from water surface by a novel tubular unit based on graphene coated polyurethane sponge

期刊

POLYMERS FOR ADVANCED TECHNOLOGIES
卷 29, 期 8, 页码 2317-2326

出版社

WILEY
DOI: 10.1002/pat.4343

关键词

continuous oil-water separation; graphene; polyurethane sponge; tubular unit

资金

  1. Industrial Innovation Project of TJOA [BHSF2017-01]
  2. National Natural Science Foundation of China [51673149]

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We develop a new strategy for the continuous separation of oil from water surface using a novel tubular unit based on graphene coated polyurethane (P-GEPU) sponge, and the P-GEPU sponge was fabricated by a simple dip-coating method; the as-prepared sponges could adsorb different kinds of oil and organic liquids while repelling water. Moreover, the tubular unit was assembled by wrapping the P-GEPU sponge on a porous PU hollow tube and combined with the accessories including pipes and joints. The tubular unit could float on the surface of water, and a continuous oil collection from water surface through vacuum pressure could be fulfilled, showing a high oil-water separation efficiency (>96%). Finally, oil-water separation efficiency remains above 93% after 10cycles, exhibiting excellent reusability. In addition, our findings are easily scaled up, showing a great promise for large-scale oil spill remediation.

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