以钛酸四丁酯为原料，采用控制金属醇盐水解和表面修饰保护方法研制单分散、粒径可控的纳米级二氧化钛（ＴｉＯ２）粒子．研究了反应物浓度、ｐＨ、反应时间、溶剂等反应条件对粒子粒径及分布的影响．采用透射电镜，红外光谱等技术对粒子的性能进行分析，结果表明，ＴｉＯ２水合粒子呈非晶态，分散性好，粒径在５０～３００ｎｍ之间随反应条件的不同而变化，经７００℃热处理后主要为金红石型ＴｉＯ２．
Monodisperse controllable TiO2 nanoparticles were prepared by using the hydrolysis of metal alkoxides(titanium tetrabutoxide) and modification of surface of particles in alcohol solution. The effect of reactive condition including reactant concentration, reactant time and solvent was studied in detail. The properties of particles were analysised by TEM, IR and so on. The experimental results show that TiO2 particles prepared are amorphous, well dispersed, and their particle sizes vary from 50 to 300nm along with the change of reactive conditions.
参考文献
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