Laser-Heat Surface Treatment of Superwetting Copper Foam for Efficient Oil-Water Separation
文献类型： 外文期刊
作者： Wang, Qinghua 1 ; Liu, Chao 1 ; Wang, Huixin 3 ; Yin, Kai 2 ; Yu, Zhongjie 1 ; Wang, Taiyuan 1 ; Ye, Mengqi 1 ; Pei, Xianjun 1 ; Liu, Xiaochao 1 ;
作者机构： 1.Southeast Univ, Sch Mech Engn, Nanjing 211189, Peoples R China
2.Cent South Univ, State Key Lab High Performance Complex Mfg, Changsha 410083, Peoples R China
3.Jiangsu Acad Agr Sci, Inst Agr Facil & Equipment, Nanjing 210014, Peoples R China
4.Minist Agr & Rural Affairs, Key Lab Protected Agr Engn Middle & Lower Reaches, Nanjing 210014, Peoples R China
关键词： laser surface treatment; micro; nanostructure; surface chemistry; superwetting; oil-water separation
期刊名称：NANOMATERIALS （ 影响因子：5.3； 五年影响因子：5.4 ）
ISSN：
年卷期： 2023 年 13 卷 4 期
页码：
收录情况： SCI
摘要： Oil pollution in the ocean has been a great threaten to human health and the ecological environment, which has raised global concern. Therefore, it is of vital importance to develop simple and efficient techniques for oil-water separation. In this work, a facile and low-cost laser-heat surface treatment method was employed to fabricate superwetting copper (Cu) foam. Nanosecond laser surface texturing was first utilized to generate micro/nanostructures on the skeleton of Cu foam, which would exhibit superhydrophilicity/superoleophilicity. Subsequently, a post-process heat treatment would reduce the surface energy, thus altering the surface chemistry and the surface wettability would be converted to superhydrophobicity/superoleophilicity. With the opposite extreme wetting scenarios in terms of water and oil, the laser-heat treated Cu foam can be applied for oil-water separation and showed high separation efficiency and repeatability. This method can provide a simple and convenient avenue for oil-water separation.
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