摘要
通过硅酸钠水解生成的无定形氧化硅对金红石相纳米TiO2进行表面包覆，研究了反应温度、pH值、加料速度和热处理条件对纳米TiO2光稳定性的影响。结果表明，当80℃～95℃，pH9～10，加料速度1．0mL·min^1-1．2mL·min^-1反应时，所得的纳米TiO2具有良好的光稳定性；适当的热处理有利于提高纳米TiO2的光稳定性。
The nanosized TiO2 in the rutile phase was coated with amorphous silica generated from hydrolysis of sodium silicate. Effects of reaction temperature, pH, feeding rate and heat treatment conditions on photostability of nanosized TiO2 were studied. The results showed that the coated nanosized TiO2 has high photostability when reaction temperature is under 80 ℃ - 95 ℃; pH is 9 - 10 and feeding rate is 1.0 mL · min^-1 - 1.2 mL · min^-1 Photostability of coated nanosized TiO2 can be improved by appropriate heat treatment.
出处
《日用化学工业》
CAS
CSCD
北大核心
2008年第4期230-233,共4页
China Surfactant Detergent & Cosmetics
基金
江苏省科技攻关资助项目(BE2006373,BE2006045)
江苏省博士后基金资助项目(0602020B)
