A Facile Solvent-Manipulated Mesh for 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 oxi...

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Published inACS applied materials & interfaces Vol. 6; no. 15; pp. 12821 - 12826
Main Authors Liu, Na, Cao, Yingze, Lin, Xin, Chen, Yuning, Feng, Lin, Wei, Yen
Format Journal Article
LanguageEnglish
Published United States American Chemical Society 13.08.2014
Subjects
superhydrophobic-and-superhydrophilic switching
controllable oil/water separation
reversible oil/water separation
stearic acid
tetrahydrofuran
solvent-manipulated
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Summary: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 5 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.
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ISSN:1944-8244
1944-8252
DOI:10.1021/am502809h