On the 24th, Harbin Institute of Technology released a message that Prof. Zhao Xuezeng and Associate Professor Pan Shulu of the Institute of Mechanical and Electrical Engineering of the school have made new progress in the selection of wettability functional materials for oil-water separation and controllable driving of droplets. The research results were published as a back cover article in Advanced Functional Materials (Influence Factor 12.124).
The picture shows the "Advanced Functional Materials" journal. (Supply from Harbin Institute of Technology)
Oil-water separation is of great significance in many fields. Among them, the use of omentum filtration for oil-water separation has the advantages of high speed and low energy consumption. However, due to the relatively high surface energy of water, the existing oil-water filtration separation technology adopts a “water-blocking and oil-in-oil†filtration method, so that the mesh pores are easily blocked by high-viscosity oil or sealed by a high-density water film. Livelihoods make fluids unable to pass through congenital defects, which greatly limits their application.
"Advanced Functional Materials" back cover of the current period (May 16, 2018, 28 volumes, 20 issues), back cover Note: In article 1706867, Pan Yulu et al. proposed an efficient method for preparing superoleophobic superhydrophilic coatings. The coating can be used to achieve oil-water separation, oil absorption and oil droplets in the controlled transport, while their proposed concrete-like structure significantly improved the mechanical strength of the coating.
By constructing a special micro-nano composite structure, the research team broke through the limitations of the traditional surface energy theory to prepare an ultra-wetting functional coating that is completely oil-free yet completely hydrophilic. Applying this kind of coating on the mesh substrate can realize oil-water separation with “oil-blocking and water-inhibiting†type, which completely solves the problems of “water-blocking and oil-in-oil†filtration, and has a very broad application prospect, especially It has very important practical value in industrial sewage treatment, crude oil exploitation and marine oil pollution recovery. (Yan star reporter Shifu)
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