摘要
纳米TiO2是一种附加值很高的功能精细无机材料,但由于其大的比表面及较多的表面空键,极易发生团聚,使其优异的性能得不到充分的发挥。本文研究了不同分散剂条件对平均粒径约为70n m的TiO2粉体在水介质中分散行为的影响。实验结果证明,在pH值为6～10、加入量是TiO2质量0.3%的NaCl作为分散剂时,分散性最好。
The nanometer-sized titania is an important high performance fine inorganic materials. It has very high additional value. Because of its surface strong polarity and easy aggregation, its practical use is limited. The effects of different dispersing agents （NaCl, （NaPO3）6, NaOH and Na2SiO3） on dispersion behavior of nano-titania powders （anatase spherical TiO2, average size 70nm） in aqueous solution by spectrophotometric method are analyzed. The experimental results indicated that when pH is 6- 10, the satisfactory and stable dispersion TiO2 in aqueous solution was obtained using NaCl as dispersant which is 0.3% of TiO2 in mass.
出处
《半导体技术》
CAS
CSCD
北大核心
2006年第5期363-366,共4页
Semiconductor Technology
基金
河北省自然科学基金资助项目(503631)
石家庄铁道学院科研专项资助项目(Q35)
关键词
纳米二氧化钛
分散剂
团聚
nano-titania
dispersing agents
aggregation
