Journal
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
Volume 25, Issue 5, Pages 4837-4845Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s11356-017-0645-3
Keywords
Graphene oxide; PU sponge; Oil/water separation; Continuous oil removal
Categories
Funding
- National Natural Science Foundation of China [51673149]
- Science and Technology Plans of Tianjin [14JCZDJC37300]
- State Oceanic Administration [BHSF2017-01]
- National Science Foundation of Tianjin [17JCQNJC02700]
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Graphene oxide (GO) was prepared by using the natural graphite as raw materials via the modified Hummers' method and ultrasonic stripping method. GO was reduced online after its anchoring on the surface of polyurethane sponges by a dip-coating method, then in situ reduced graphene oxide-based polyurethane (IRGOPU) sponges were fabricated. The characterizations of IRGOPU sponges were investigated using Field emission scanning electron microscope (FESEM), Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), and contact angle measurement. The IRGOPU sponges had an adsorption capacity for a broad range of oils up to 21.7 similar to 55 g/g. A simulation experiment of large-scale oil spill using a simple IRGOPU sponge hollow tube component was designed. The process of continuous oil removal from water surface was quick and effective, and the oil/water separation efficiency could be up to 99.6%. The results indicated that the IRGOPU sponge hollow tube may be an optimum candidate for the oil/water separation of large-scale oil spill.
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