复合材料及其光学性质
(江苏大学 化学化工学院，镇江 212013)
摘 要: 研究在片状绢云母表面直接沉积纳米金红石型TiO2制备云母钛纳米复合材料的方法。结果表明：在制备的云母钛中，金红石型TiO2良好地结合在光滑的绢云母表面上，沉积颗粒呈岛状分布，且分散均匀。随着TiO2含量的增加，形成致密的TiO2涂层。低温下热处理云母钛复合材料时，云母钛的白度、亮度及反射系数会随着金红石TiO2含量的增加而提高。云母钛复合物的反射系数随着TiO2的结晶性的提高而增加。
关键字: 纳米结构；云母钛；光学性质；纳米复合材料
nanocomposites by deposition of rutile TiO2 nanoparticles
（Faculty of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China）
Abstract:Mica-titania nanocomposites were prepared by direct deposition of rutile TiO2 nanoparticles on lamellar sericite. The results show that in mica-titania nanocomposites, island-like structured rutile TiO2 aggregates are strongly anchored and well dispersed on the flat surfaces of sericite. Dense TiO2 films are formed with increasing TiO2 loading. When mica-titania nanocomposites are thermally treated at lower temperature, the whiteness, lightness, and reflectance of the resultant mica-titania nanocomposites increase with increasing TiO2 loading. The reflectance of mica-titania nanocomposites increases with increasing TiO2 crystallinity.
Key words: nano-structures; mica-titania; optical properties; nanocomposites
