Super-hydrophobic and super-lipophilic functionalized graphene oxide/polyurethane sponge applied for oil/water separation

doi:10.1016/j.cjche.2017.09.004

Chinese Journal of Chemical Engineering ›› 2018, Vol. 26 ›› Issue (5): 957-963.DOI: 10.1016/j.cjche.2017.09.004

• Separation Science and Engineering • 上一篇下一篇

Super-hydrophobic and super-lipophilic functionalized graphene oxide/polyurethane sponge applied for oil/water separation

Huiwen Meng, Tao Yan, Jingang Yu, Feipeng Jiao

School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China

收稿日期:2017-07-24 修回日期:2017-09-04 出版日期:2018-05-28 发布日期:2018-06-29
通讯作者: Feipeng Jiao,E-mail address:jiaofp@csu.edu.cn
基金资助:
Supported by the National Natural Science Foundation of China (21776319).

Super-hydrophobic and super-lipophilic functionalized graphene oxide/polyurethane sponge applied for oil/water separation

Huiwen Meng, Tao Yan, Jingang Yu, Feipeng Jiao

School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China

Received:2017-07-24 Revised:2017-09-04 Online:2018-05-28 Published:2018-06-29
Contact: Feipeng Jiao,E-mail address:jiaofp@csu.edu.cn
Supported by:
Supported by the National Natural Science Foundation of China (21776319).

摘要/Abstract

摘要： Nowadays, oil spills have led to a serious environmental crisis of the world. To deal with this problem, inspired from super-hydrophobic lotus leaf, this study fabricated super-hydrophobic and super-lipophilic functionalized graphene oxide/polyurethane (FGP) sponge by a simple and inexpensive dip coating method. The resulting FGP sponge was characterized by infrared spectroscopy, X-ray diffraction, scanning electron microscopy and water contact angle. The results expressed that FGP sponge exhibited a similar surface structure to that of a lotus leaf, and possessed the super-hydrophobic characteristic with the water contact angle (WAC) of 152° ±1°. The absorption capacity and reusability were also investigated. It can be seen that, the FGP sponge can remove a wide range of oils and organic solvents from water with good absorption capacities (up to 35 times of its own mass). Significantly, after 10 cycles the absorption capacity of the oils and organic solvents was higher than 90% for the reused FGP sponge, demonstrating the good reusability of the FGP sponge. Therefore, this study probably provided a simple way to remove the pollutions of oil spills and toxic organism from water.

关键词: Graphene oxide, n-Dodecyltrimethoxysilane, Polyurethane sponge, Super-hydrophobicity, Oil/water separation

Abstract: Nowadays, oil spills have led to a serious environmental crisis of the world. To deal with this problem, inspired from super-hydrophobic lotus leaf, this study fabricated super-hydrophobic and super-lipophilic functionalized graphene oxide/polyurethane (FGP) sponge by a simple and inexpensive dip coating method. The resulting FGP sponge was characterized by infrared spectroscopy, X-ray diffraction, scanning electron microscopy and water contact angle. The results expressed that FGP sponge exhibited a similar surface structure to that of a lotus leaf, and possessed the super-hydrophobic characteristic with the water contact angle (WAC) of 152° ±1°. The absorption capacity and reusability were also investigated. It can be seen that, the FGP sponge can remove a wide range of oils and organic solvents from water with good absorption capacities (up to 35 times of its own mass). Significantly, after 10 cycles the absorption capacity of the oils and organic solvents was higher than 90% for the reused FGP sponge, demonstrating the good reusability of the FGP sponge. Therefore, this study probably provided a simple way to remove the pollutions of oil spills and toxic organism from water.

Key words: Graphene oxide, n-Dodecyltrimethoxysilane, Polyurethane sponge, Super-hydrophobicity, Oil/water separation

Huiwen Meng, Tao Yan, Jingang Yu, Feipeng Jiao. Super-hydrophobic and super-lipophilic functionalized graphene oxide/polyurethane sponge applied for oil/water separation[J]. Chinese Journal of Chemical Engineering, 2018, 26(5): 957-963.

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Super-hydrophobic and super-lipophilic functionalized graphene oxide/polyurethane sponge applied for oil/water separation

Super-hydrophobic and super-lipophilic functionalized graphene oxide/polyurethane sponge applied for oil/water separation

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