纳米金红石型二氧化钛的低温制备及表征  

Preparation and characterization of nanosize rutile titania at low temperature

作　　者：龙震[1] 黄喜明[1] 钟家柽[1] 龚楚清[1] 昝菱[1] 罗其荣[1] 王建波[2] 

机构地区：[1]武汉大学化学与分子科学学院红外材料研究室,湖北武汉430072 [2]武汉大学电子显微镜中心,湖北武汉430072

出　　处：《功能材料》2004年第3期311-313,共3页Journal of Functional Materials

基　　金：国家教委"九五"攻关计划资助课题(96 554 03 01)

摘　　要：　采用不同高浓度的硝酸对由TiOSO4生成的Ti(OH)4进行处理,发现浓硝酸在低温下可以促使纳米金红石型二氧化钛的生成,用XRD及高分辨率透射电镜(HRTEM)对生成的晶粒晶型及形貌进行了分析,发现纳米晶的稳定性差,晶体界面有较多的缺陷和非晶,并有孪晶出现。Different high concentration of HNO3 were used to deal with Ti(OH)4 produced with TiOSO4. It was found that at low temperature high concentration acid can promote the production of rutile titania. XRD and high resolution TEM (HRTEM) were applied to analyze the gradient and appearance of nanosize grain. It was concluded that the stability of nanosize crystal is weak. The twin crystals, defects and noncrystals in the boundary of the crystals were also observed.

关 键 词：二氧化钛 金红石 纳米晶体 低温 HRTEM 

分 类 号：TB383[一般工业技术—材料科学与工程] TN304.054[电子电信—物理电子学]