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Design of High-Throughput Superoleophobic Copper Meshes for Oil-Water Separation
Published online by Cambridge University Press: 09 June 2015
Abstract
Advanced materials with desired wettability are extremely important for environmental sustainability, such as oily industrial wastewater treatment and oil spill cleanup. To meet this demand, a scalable nanoengineering approach was developed to fabricate superhydrophilic and underwater superoleophobic inorganic meshes for cross-flow filtration and oil/water separation. The resulting nanostructured copper meshes exhibit superhydrophilicity and underwater superoleophobicity (oil contact angle approaching to 159°). With these meshes, very high values of filtration flux (≥900,000 Lh-1m-2) have been achieved, with ultra-low oil residue in the filtrate (<40 ppm) and long water retention time (more than 1 h). The proposed nanoengineering method paves the way for effective gravity-driven separation of immiscible oil/water mixtures, especially for low-density oil purification.
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- Information
- MRS Online Proceedings Library (OPL) , Volume 1745: Symposium FF – Materials as Tools for Sustainability , 2015 , mrsf14-1745-ff08.11
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- Copyright © Materials Research Society 2015
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