Photo-induced water–oil separation based on switchable superhydrophobicity–superhydrophilicity and underwater superoleophobicity of the aligned ZnO nanorod array-coated mesh films
- 1 January 2012
- journal article
- Published by Royal Society of Chemistry (RSC) in Journal of Materials Chemistry
- Vol. 22 (37), 19652-19657
- https://doi.org/10.1039/c2jm34056a
Abstract
Stimulus-responsive surface wettability, especially photoresponsive surface wettability, has been intensively studied. Meanwhile, multifunctional surfaces, especially for the treatment of oil contaminated water, have aroused worldwide attention. Recently, pH-responsive surfaces with controllable oil–water separation have also been reported. However, photoresponsive water–oil separation is still a challenge. Here we report photo-induced water–oil separation based on the switchable superhydrophobicity–superhydrophilicity and underwater superoleophobicity of aligned ZnO nanorod array-coated mesh films, which shows excellent controllability and high separation efficiency of different types of water–oil mixtures in an oil–water–solid three-phase system. The underwater superoleophobicity of the aligned ZnO nanorod array-coated stainless steel mesh film can effectively prevent the mesh film from being polluted by oils. This work is promising in photo-induced water–oil mixture treatments such as water-removal from a micro-reaction system and controllable filtration, and may also provide interesting insight into the design of novel functional devices based on controllable surface wettability.Keywords
This publication has 67 references indexed in Scilit:
- Polyamine@silica hybrid nanograss: biomimetic fabrication, structure characterization and surface functionalizationJournal of Materials Chemistry, 2011
- Carbon Nanotube SpongesAdvanced Materials, 2010
- Bioinspired Design of a Superoleophobic and Low Adhesive Water/Solid InterfaceAdvanced Materials, 2009
- Designing Superoleophobic SurfacesScience, 2007
- Multiresponsive Surfaces Change Between Superhydrophilicity and SuperhydrophobicityAdvanced Materials, 2007
- Reversible Electrowetting on Superhydrophobic Silicon NanowiresNano Letters, 2007
- Creating superhydrophobic surfaces with flowery structures on nickel substrates through a wet-chemical-processJournal of Materials Chemistry, 2007
- What do we need for a superhydrophobic surface? A review on the recent progress in the preparation of superhydrophobic surfacesChemical Society Reviews, 2007
- Two-Level Structured Self-Adaptive Surfaces with Reversibly Tunable PropertiesJournal of the American Chemical Society, 2003
- Wettability of porous surfacesTransactions of the Faraday Society, 1944