材料科学
轻质原油
润湿
环境友好型
水下
化学工程
复合材料
有机化学
生态学
生物
海洋学
地质学
工程类
化学
作者
Guoliang Cao,Wenbo Zhang,Zhen Jia,Feng Liu,Haiyue Yang,Qianqian Yu,Shaobin Wang,Xin Di,Chengyu Wang,Shih‐Hsin Ho
标识
DOI:10.1021/acsami.7b08997
摘要
Remediation of oil spills requires new technologies to separate light oil/water/heavy oil mixtures. Low-cost, biological, and environmentally friendly materials are needed to treat water pollution caused by oils. In this study, a corn straw powder (CSP)-coated fabric (CSPF) was fabricated by spraying waste CSP and polyurethane onto amphiphilic cotton fabric, and thus, the wettability of CSPF is enhanced by taking advantage of the hierarchical structure and increased surface roughness. Therefore, the CSPF could be dually prewetted (DCSPF) with both water and oil, and it showed underwater superoleophobic and under oil superhydrophobic properties without any further chemical modification. When applied to light oil/water/heavy oil separation, the DCSPF could be used to successively separate light oil/water/heavy oil three-phase mixtures under gravity with a high separation efficiency and flux. In addition, the DCSPF showed excellent structural and chemical stability according to repeated cycling and corrosive solution/oil separation experiments. The results of this study are of value in providing a simple, low-cost, and environment-friendly approach for application in the field of successive separation of light oil/water/heavy oil three-phase mixtures.
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