A Facile Solvent-Manipulated Mesh for Reversible Oil/Water Separation

作者：Liu, Na; Cao, Yingze; Lin, Xin; Chen, Yuning; Feng, Lin^*; Wei, Yen

来源：ACS Applied Materials & Interfaces, 2014, 6(15): 12821-12826.

DOI：10.1021/am502809h

• solvent-manipulated
• superhydrophobic-and-superhydrophilic switching
• stearic acid
• tetrahydrofuran
• controllable oil/water separation
• reversible oil/water separation

A controllable oil/water separation mesh has been successfully developed and easily manipulated by immersion in a stearic acid ethanol solution and tetrahydrofuran with a very short period of time. The superhydrophilic and underwater superoleophobic mesh is first obtained via a one-step chemical oxidation and subsequently converts to superhydrophobic after it is immersed in an ethanol solution of stearic acid for 5 min. The surface wettability is regained to superhydrophilic quickly by immersion in tetrahydrofuran for S min. More importantly, the reversible superhydrophobic-and-superhydrophilic switching can be repeated multiple times with almost no visible morphology variation. Therefore, this approach provides potential application in controllable oil/water separation and opens up new perspectives in manipulation of various metallic oxide substrates.

• 出版日期2014-8-13
• 单位清华大学