王宝娟,董哲勤,马晓华,许振良

• 1:化学工程联合国家重点实验室华东理工大学化学工程研究所膜科学与工程研发中心

摘要(Abstract)：

采用溶胶凝胶法在不锈钢网上涂覆二氧化钛(TiO_2)颗粒构筑了微纳米级粗糙表面,然后通过氟硅烷(FAS)接枝改性降低表面能,制备了一种耐化学腐蚀的氟硅烷-二氧化钛(FAS-TiO_2)超疏水网,并将其应用在油水分离中。采用水接触角(WCA)、扫描电子显微镜(SEM)、X射线光电子能谱分析(XPS)对FAS-TiO_2网进行了表征,分析了FAS-TiO_2网的实际应用性能。结果表明水滴与所制备的网表面接触角为159°,且滑动角非常小;FAS-TiO_2超疏水网在腐蚀性溶液,极性有机溶剂及热溶液中具有优异的化学、热稳定性及再循环使用能力。而且FAS-TiO_2超疏水网能够仅利用重力驱动,快速高效地分离各种油水混合物。在苛刻的酸、碱、盐和热环境下FAS-TiO_2网重复使用30次,其油水分离效率仍然保持在95%以上。FAS-TiO_2网制备过程简易、性能优异,在油水分离中有着广泛的适用性。

关键词(KeyWords)： 油水分离;FAS-TiO2网;超疏水;耐化学腐蚀

Abstract:

Keywords:

基金项目(Foundation): 国家科技部支撑计划项目(2014BAB07B01,2015BAB09B01);; 国家发改委能源局项目(2013-117)

作者(Author): 王宝娟,董哲勤,马晓华,许振良

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