Cost-effective reduced graphene oxide-coated polyurethane sponge as a highly efficient and reusable oil-absorbent.
Reduced graphene oxide coated polyurethane (rGPU) sponges were fabricated by a facile method. The structure and properties of these rGPU sponges were characterized by Fourier transform infrared spectroscopy, thermal gravimetric analysis, X-ray diffraction, and scanning electron microscopy. The rGPU sponges are hydrophobic and oleophilic and show extremely high absorption for organic liquids. For all the organic liquids tested, the absorption capacities were higher than 80 g g(-1) and 160 g g(-1) (the highest value) was achieved for chloroform. In addition, the absorption capacity of the rGPU sponge did not deteriorate after it was reused 50 times, so the rGPU sponge has excellent recyclability.
School of Science and ‡School of Chemical Engineering & Technology, Tianjin University , Tianjin 300072, P. R. China.
Yue
Y
Liu
Junkui
J
Ma
Tao
T
Wu
Xingrui
X
Wang
Guanbo
G
Huang
Yu
Y
Liu
Haixia
H
Qiu
Yi
Y
Li
Wei
W
Wang
Jianping
J
Gao
D000327:Adsorption; D006108:Graphite / Q000737:chemistry*; D057927:Hydrophobic and Hydrophilic Interactions; D009821:Oils / Q000737:chemistry*; D010087:Oxides / Q000737:chemistry; D011140:Polyurethanes / Q000737:chemistry*; D016062:Porosity
D009821:Oils; D010087:Oxides; D011140:Polyurethanes; D006108:Graphite