无机材料学报2013，Vol.28Issue(8)：864-868,5.DOI:10.3724/SP.J.1077.2013.12600
Al2O3微滤膜的超疏水改性研究
Study on Superhydrophobic Modification of Al2O3 Microfiltration Membrane
侯维敏 1于云 1胡学兵 1于洋 1米乐 1宋力昕1
作者信息
- 1. 中国科学院上海硅酸盐研究所,特种无机涂层重点实验室,上海200050
- 折叠
摘要
Abstract
TiO2 nano-coating with superhydrophobic surface was initially prepared through depositing TiO2 nanoparticles on the surface of porous Al2O3 microfiltration membrane by multi-layer assembly technology,then followed by a fluorination surface treatment with 1H,1H,2H,2H-perfluorodecyltriethoxysilane (PFDS).X-ray diffractometer (XRD),fourier transform infrared spectroscope (FTIR),atomic force microscope (AFM),water contact angle measurements (WCA) and scanning electron microscope (SEM) were used for membrane characterization.The crystalline structure of TiO2 nano-coating was analysed.The relationship among TiO2 nanoparticles deposition time,surface roughness and hydrophobicity was discussed.The influence of grafting time on the morphology and hydrophobicity was also researched.The result shows that with TiO2 nano-coating anatase structure is fabricated by annealing at 600℃ for 1h,With the increase of TiO2 nanoparticles deposition time,the surface becomes rougher,and the state of water droplets on it transforms from Wenzel to Cassie contact.When the TiO2 nanoparticles deposition time is 50 min and the TiO2 coating is grafted for three times,an ideal superhydrophobic surface of micro-nanometer morphology is obtained with water contact angle of 174.5°.关键词
多层自组装/超疏水改性/粗糙度/微纳米结构Key words
multi-layer assembly/ superhydrophobic/ roughness/ micro-nanometer morphology分类
化学化工引用本文复制引用
侯维敏,于云,胡学兵,于洋,米乐,宋力昕..Al2O3微滤膜的超疏水改性研究[J].无机材料学报,2013,28(8):864-868,5.
