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首页> 外文期刊>RSC Advances >Superhydrophobic modification of an Al2O3 microfiltration membrane with TiO2 coating and PFDS grafting
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Superhydrophobic modification of an Al2O3 microfiltration membrane with TiO2 coating and PFDS grafting

机译：TiO2涂层和PFDS接枝的Al2O3微滤膜的超疏水改性

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摘要

A novel superhydrophobic Al2O3 microfiltration membrane was prepared by the layer-by-layer assembly of TiO2 coating with subsequent fluorination grafting surface treatment by 1H,1H,2H,2H-perfluorodecyltriethoxysilane. The influence of surface morphology on membrane superhydrophobicity, pore size diameter distributions and pure water permeability of the different membranes were studied. By optimizing the grafting parameters, a needle-like surface of grafted TiO2-coated Al2O3 membrane with a water contact angle of 169.5 degrees was obtained. The pure water permeability of different membranes varied from 100 l m(-2) h(-1) bar(-1) before grafting to 3-5 l m(-2) h(-1) bar(-1) after grafting, and the grafted superhydrophobic membrane showed excellent water repellence. The novel superhydrophobic membrane is shown to be promising for liquid-liquid and gas-liquid separation.
机译：通过逐层组装TiO2涂层并随后用1H，1H，2H，2H-全氟癸基三乙氧基硅烷进行氟化接枝表面处理，制备了一种新型的超疏水Al2O3微滤膜。研究了表面形态对不同膜的超疏水性，孔径分布和纯净水渗透率的影响。通过优化接枝参数，获得了接枝的TiO2包覆的Al2O3膜的针状表面，其水接触角为169.5度。不同膜的纯水渗透率从接枝前的100 lm（-2）h（-1）bar（-1）到嫁接后的3-5 lm（-2）h（-1）bar（-1）不等。接枝的超疏水膜表现出优异的防水性。新型超疏水膜显示出有望用于液-液和气-液分离。

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