摘要
在TiO2 SiO2溶胶中按不同比例掺杂Ce3+得到复合溶胶,将溶胶喷涂在浮法玻璃原片上,105～300℃烘干得到镀有纳米TiO2膜的透明玻璃。AFM图像表明:掺杂Ce3+的TiO2 SiO2镀膜玻璃表面的颗粒小于没有掺杂Ce3+的TiO2 SiO2镀膜玻璃表面颗粒。掺杂Ce3+与TiO2摩尔比为0.01∶1时,镀膜玻璃可见光透射比为85.3%,紫外线透射比39.7%、可见光反射比7.3%、太阳光直接透射比83.5%、太阳光直接反射比6.6%;水接触角θ为0°;在可见光照射下,分解甲基橙的时间为48h;膜表面电阻率为5.9×107Ω·cm。在400～700℃对镀膜玻璃进行高温处理,其光学性能明显提高,可见光透射比为91.7%,紫外线透射比39.1%、可见光反射比6.4%、太阳光直接透射比92.0%、太阳光直接反射比5.9%;θ角为0°,亲水性明显提高;在可见光照射下,甲基橙分解时间为28h;膜表面电阻率为5.5×107Ω·cm,玻璃在可见光条件下就具有自清洁能力。
The composite solutions were prepared by doping different content Ce^(3+) into TiO_2/SiO_2 solution and spray them onto the surfaces of glass. The transparent glass with nano-TiO_2/SiO_2 coating were got through post-drying at 105～300 ℃. AFM shows that the particles size on the glass surface for nano-TiO_2/SiO_2 coating doped with Ce^(3+) is smaller than that without Ce^(3+). When the mole ratio of Ce^(3+) and TiO_2 is 0.01∶1, the transmittance of visible light is 85.3%, and ultra-voilet light transmittance is 39.7%, the reflectivity of visible light is 7.3%, sunlight transmittance is 83.5%, sunlight reflectivity is 6.6%. The angle of water contacting θ is 0°. The time for methyl orange decomposition is 48 h under visible light and electric resistivity coating is 5.9×10~7 Ω·cm. The light properties of coping glass are greatly increased by heat treatment at 400～700 ℃. After treatment transmittance of visible light becomes 91.7%, and ultra-voilet light transmittance is 39.1%, the reflectivity of visible light is 6.4%, sunlight transmittance is 92.0%, sunlight reflectivity is 5.9%. The angle of water contacting θ is 0°. The time for methyl orange decomposition is 28 h under visible light and electric resistivity is 5.5×10~7 Ω·cm. Glass with nano-TiO_2/SiO_2 coating doped with Ce^(3+) has self-cleaning function under visible light.
出处
《中国稀土学报》
CAS
CSCD
北大核心
2005年第2期190-194,共5页
Journal of the Chinese Society of Rare Earths
基金
广东省科技计划项目(2002C1030402)
广州市科技计划重点项目(2002Z2 2023)
