海水淡化
海水淡化
膜
多孔性
化学工程
材料科学
化学
复合材料
工程类
生物化学
作者
Maria Luisa Perrotta,Giacomo Saielli,Giovanni Casella,Francesca Macedonio,Lidietta Giorno,Enrico Drioli,Annarosa Gugliuzza
标识
DOI:10.1016/j.apmt.2017.04.009
摘要
Abstract An ultrathin highly fluorinated porous membrane was designed for a large production of desalted water at very low energy consumption. Imprinting water droplets were used through a low thermally conductive tetra-fluoroethylene (TFE)/2,2,4-trifluoro-5-tri-fluorometoxy-1,3-dioxol (TIT) (HYFLON AD 60) solution and the generated porous nanofilm was suspended onto a polyethersulfone (PES) honeycomb texture. The very tiny fluorinated thickness together with a large number of small-shaped pores provided the membrane for enhanced anti-wetting surface properties, extremely reduced resistance to water vapor transfer and outstanding thermal efficiency. Fine materials structure-transport relations let the membrane reach unusual productivity-efficiency trade-off during water desalination via thermally driven membrane distillation. The exceptional performance affords this novel nanostructured membrane to catalyze the accomplishment of new-concept water desalination processes.
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