pH-Controllable On-Demand Oil/Water Separation on the Switchable Superhydrophobic/Superhydrophilic and Underwater Low-Adhesive Superoleophobic Copper Mesh Film

被引：231

作者：

Cheng, Zhongjun ^{[1
]}

Wang, Jingwen ^{[2
]}

Lai, Hua ^{[1
]}

Du, Ying ^{[1
]}

Hou, Rui ^{[1
]}

Li, Chong ^{[1
]}

Zhang, Naiqing ^{[1
]}

Sun, Kening ^{[1
]}

机构：

[1] Harbin Inst Technol, Nat Sci Res Ctr, Acad Fundamental & Interdisciplinary Sci, Harbin 150090, Heilongjiang, Peoples R China

[2] Heilongjiang Sci & Technol Informat Res Inst, Harbin 150090, Heilongjiang, Peoples R China

来源：

LANGMUIR | 2015年 / 31卷 / 04期

基金：

中国博士后科学基金; 中国国家自然科学基金; 高等学校博士学科点专项科研基金;

关键词：

HIERARCHICAL STRUCTURE; OIL SEPARATION; COATED MESH; SURFACES; WATER; ROBUST; SUPERHYDROPHOBICITY; TRANSITION; MEMBRANES; DESIGN;

D O I：

10.1021/la503676a

中图分类号：

O6 [化学];

学科分类号：

070301 [无机化学];

摘要：

Recently, materials with controlled oil/water separation ability became a new research focus. Herein, we report a novel copper mesh film, which is superhydrophobic and superhydrophilic for nonalkaline water and alkaline water, respectively. Meanwhile, the film shows superoleophobicity in alkaline water. Using the film as a separating membrane, the oil/water separating process can be triggered on-demand by changing the water pH, which shows a good controllability. Moreover, it is found that the nanostructure and the appropriate pore size of the substrate are important for realization of a good separation effect. This paper offers a new insight into the application of surfaces with switchable wettability, and the film reported here has such a special ability that allows it to be used in other applications, such as sewage purification, filtration, and microfluidic device.

引用

页码：1393 / 1399

页数：7

共 57 条

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