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A dual-modification strategy for the preparation of super-amphiphobic nanofibrous membranes for high-efficiency oil aerosol separation
Separation and Purification Technology ( IF 8.1 ) Pub Date : 2023-06-05 , DOI: 10.1016/j.seppur.2023.124217
Tong Chen , Shasha Feng , Xiao Shen , Feng Zhang , Zhaoxiang Zhong , Hongmiao Wu , Weihong Xing

This study presents a highly effective FOTS-TiO2@SiO2 Nano fibrous membrane (NFM) with super-amphiphobic properties for oil aerosol purification. The membrane was fabricated by modifying the surface roughness of electrospun SiO2 NFM with a uniform array of TiO2 nanocones, followed by surface energy modification using 1H, 1H, 2H, 2H-perfluorooctyltrimethoxysilane (FOTS). The NFM exhibited exceptional contact angles towards both water (167.9°) and n-hexadecane (154.7°) as well as extremely low oil adhesion (38.7 μN). At a gas velocity of 3.2 m/min, the NFM demonstrated excellent oil aerosol separation performance, with a filtration efficiency of 99.87 % and a resistance of 10.0 kPa. The amphiphobic NFM also exhibited a good regeneration ability, with higher efficiency than SiO2 NFM after three rounds of filtration. These results suggest that the FOTS-TiO2@SiO2 NFM has promising potential for cleaning oil-bearing gas.



中文翻译:

用于高效油气溶胶分离的超双疏性纳米纤维膜的双重修饰策略

本研究展示了一种高效的 FOTS-TiO 2 @SiO 2纳米纤维膜 (NFM),具有超双疏性,可用于油气溶胶净化。该膜是通过用均匀排列的 TiO 2改变电纺 SiO 2 NFM的表面粗糙度制成的纳米锥,然后使用 1H、1H、2H、2H-全氟辛基三甲氧基硅烷 (FOTS) 进行表面能改性。NFM 表现出对水 (167.9°) 和正十六烷 (154.7°) 的特殊接触角以及极低的油粘附力 (38.7 μN)。在 3.2 m/min 的气速下,NFM 表现出优异的油气溶胶分离性能,过滤效率为 99.87%,阻力为 10.0 kPa。双疏性NFM也表现出良好的再生能力,经过三轮过滤后,其再生效率高于SiO 2 NFM。这些结果表明,FOTS-TiO 2 @SiO 2 NFM 具有清洁含油气的巨大潜力。

更新日期:2023-06-05
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