摘要
为使纳米TiO2在水溶液中良好稳定地分散,采用透光率法对粒径约为30 nm的锐钛型TiO2粉体在水溶液中分散行为进行了研究,并对其进行粒度分布、ζ电位的测定.实验结果证明:加入量为二氧化钛质量0.8%的硅酸钠作为分散剂,调节pH值为8~10,超声分散约10 min可以使纳米二氧化钛在水溶液中获得良好稳定的分散.通过测定分散相在分散介质中的ζ电位,验证了pH值影响纳米TiO2粉体在水中的分散行为.
The factors that influence the dispersion behavior of nano-titania in aqueous solution were investigated by spectrophotometry. By ultrasonic treatment for 10 min, nano-titania can be dispersed well and stably in aqueous solution when Na2SiO3 used as dispersant (0.8% of TiO2 in mass) and pH 8~10. The measured zeta potential of the particles in aqueous solution has confirmed the effect of pH on dispersion behavior.
出处
《电子元件与材料》
CAS
CSCD
北大核心
2003年第5期11-13,共3页
Electronic Components And Materials
基金
河北省自然科学资助项目(501115)
