Preparation and characterization of nanometer titania-coated silica particles

被引：0

作者：

Ma, YL ^{[1
]}

Zhu, HL

Wang, Y

机构：

[1] Tianjin Univ, Inst Sci, Dept Chem, Tianjin 300072, Peoples R China

[2] Mengguli Power Supply Technol Ltd Co, Beijing 102200, Peoples R China

来源：

RARE METAL MATERIALS AND ENGINEERING | 2005年 / 34卷

关键词：

nanometer TiO2-coated silica particles; microemulsion technology; sol-gel process; chemical bond;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Silica gel particles prepared by microemulsion technology were used as the corns, which were subsequently coated nanometer titania layer through sol-gel process. Phase compositions and microstructures of nanometer TiO2-coated silica particles were characterized. The results of experiments indicate that the size of nanometer TiO2-coated silica particles is about 250nm. The coated-TiO2 layers with the average thickness of 20 nm similar to 40nm are uniform. With the calcining temperature rising from 550 degrees C to 850 degrees C, the coated-TiO2 layers indicate anatase-phase crystal structure, and the size of nanometer titania in the coated-layers is less than 20nm. The Ti-O-Si chemical bond is formed at the corn-layer interfaces confirmed by XPS and FT-IR.

引用

页码：174 / 177

页数：4