NIMTE OpenIR  > 2018专题
Superhydrophilicity and underwater superoleophobicity TiO2/Al2O3 composite membrane with ultra low oil adhesion for highly efficient oil-in-water emulsions separation
Zhang, Dawei; Wang, Gang; Zhi, Shudi; Xu, Kaile; Zhu, Lijing; Li, Wenwei; Zeng, Zhixiang; Xue, Qunji
2018
发表期刊APPLIED SURFACE SCIENCE
卷号458页码:157-165
摘要To improve the separation efficiency and decrease fouling of the membranes used in oil-in-water emulsions separation, a superhydrophilic and underwater superoleophobic Ti-O2/Al2O3 composite membrane with ultra low oil adhesion was designed. TiO2 nanorod arrays were prepared on A1(2)O(3) porous ceramic membrane surface by simple magnetron sputtering and hydrothermal oxidation. The microstructure and surface photosensitivity of TiO2 nanorod array-coated ceramic membrane can effectively increase the efficiency of oil-water separation and reduce the degree of surface fouling. The layer of TiO2 nanorod arrays not only reduced the pore size of traditional ceramic membrane (enhanced sieving effect of porous structures) but also endowed its superhydrophilicity (enhanced flux) and underwater superoleophobicity (enhanced oil/water selectivity and anti-fouling). Based on the superhydrophilicity (water contact angle (WCA) of 0 degrees) and underwater superoleophobicity (oil contact angle (OCA) higher than 150 degrees) of ceramic membrane, oil droplets were blocked by the membrane (oil-water separation efficiency 99.1% under gravity) and water will pass (flux is maintained at 41.8L/(m(2)h) under gravity). It also has excellent anti-fouling ability due to the ultra-low oil adhesion force (0.084 mN) of the TiO2 nanorod array-coating after UV irradiation. These features, combined with energy-saving, low-cost and easy-to-scale manufacturing schemes will be of great versatility and practicality in environmental rehabilitation and wastewater purification.
关键词Oil/water Separation Waste-water Titanium-dioxide Hydrophilicity Illumination Performance Technology Resistance Mixtures Surface
学科领域Materials Science ; Physics
语种英语
文献类型期刊论文
条目标识符http://ir.nimte.ac.cn/handle/174433/17013
专题2018专题
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GB/T 7714
Zhang, Dawei,Wang, Gang,Zhi, Shudi,et al. Superhydrophilicity and underwater superoleophobicity TiO2/Al2O3 composite membrane with ultra low oil adhesion for highly efficient oil-in-water emulsions separation[J]. APPLIED SURFACE SCIENCE,2018,458:157-165.
APA Zhang, Dawei.,Wang, Gang.,Zhi, Shudi.,Xu, Kaile.,Zhu, Lijing.,...&Xue, Qunji.(2018).Superhydrophilicity and underwater superoleophobicity TiO2/Al2O3 composite membrane with ultra low oil adhesion for highly efficient oil-in-water emulsions separation.APPLIED SURFACE SCIENCE,458,157-165.
MLA Zhang, Dawei,et al."Superhydrophilicity and underwater superoleophobicity TiO2/Al2O3 composite membrane with ultra low oil adhesion for highly efficient oil-in-water emulsions separation".APPLIED SURFACE SCIENCE 458(2018):157-165.
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