日用化学工业2018，Vol.48Issue(5)：283-287,5.DOI:10.13218/j.cnki.csdc.2018.05.008
氟化铵对纳米金红石型钛硅复合氧化物表面改性研究
Surface modification of rutile titania-silica nanocomposites by ammonium fluoride
摘要
Abstract
Rutile-TiO2-SiO2 nanocomposites were synthesized by an improved hydrolysis-coprecipitation method using sodium metasilicate and titanium oxysulfate as precursors. Using hydrothermal method, the obtained nanocomposites were further modified by ammonium fluoride (NH4F) in different solvents. The effects of solvents on modification were studied by characterization of the modified nanocomposites by X-ray diffraction, fourier transform infrared spectra, scanning electron microscopy, atomic force microscope and contact angle (CA) measurements. Results show that, the rutile-TiO2-SiO2 modified by NH4F in isopropanol exhibits large specific surface area and has good surface properties, due to the cooperative factors happening at the surface, such as the formation of Si-F bonds, the micro/nano hierarchical rough structure and the self-assembly of isopropanol. Its specific surface area is 332 m2/g, and the contact angles of water and diiodomethane are 147. 1° and 147. 2°, respectively.关键词
氟化铵/表面改性/钛硅复合氧化物/异丙醇Key words
ammonium fluoride/surface modification/titania-silica composites/isopropanol分类
化学化工引用本文复制引用
赵淑芳,侯磊鑫,柳丹丹,方莉,程芳琴..氟化铵对纳米金红石型钛硅复合氧化物表面改性研究[J].日用化学工业,2018,48(5):283-287,5.基金项目
国家重点研发计划(2017YFB0603101,2017YFB0603102) （2017YFB0603101,2017YFB0603102）
山西省煤基低碳科技重大专项(MC2016-05) （MC2016-05）
"三晋学者"支持计划 （）
