摘要
利用脉冲红外激光产生的等离子体，诱导反应体系ＴｉＣｌ＿４／Ｏ＿２合成了ＴｉＯ＿２超精细粉末，采用ＩＲ、ＸＲＤ、ＸＰＳ、ＴＥＭ等技术对粉体进行了分析表征。结果表明，ＴｉＯ＿２超精细粉末粒径在１４０左右，具有大小均匀、不团聚、粒径尺寸分布窄等优点。由该粉体催化ＣＯ氧化结果表明，对ＣＯ氧化反应具有较高催化活性。
TiO_2 ultrafine powders(UFP)were synthesized by laser induced vapor-phase reaction methodwith an IR pulsed CO_2 laser as light source and TiCl_4/O_2 as reactant.The means of IR, XRD, TEMand XPS were used to charactcrize the ultrafine powders.The results showed that the powders are main-ly composed of anatase TiO_2 ultrafine powders , while rutile TiO_2 ultrafine powders were substantial; theyhave the characters of single dispersional spherical particles and narrow-size distribution , with size Ca-140. TiO_2 ultrafine powders have a good catalytic activity.
出处
《西北师范大学学报（自然科学版）》
CAS
1995年第1期18-21,共4页
Journal of Northwest Normal University(Natural Science)
基金
甘肃省科委科研基金
关键词
超细粉末
二氧化钛
激光气相法
laser chemistry ,ultrafine powders, titanium dioxide
