表面活性剂对TiOSO_4常温水解法制备纳米TiO_2粉末的影响  

The Effect of Polythylene Glycol on Nanometer TiO_2 Powder Prepared by Hydrolyzing TiOSO_4 Solution

作　　者：唐小红[1] 周大利[1] 尹光福[1] 张云[1] 杨为中[1] 郑昌琼[1] 

机构地区：[1]四川大学材料科学与工程学院,四川成都610065

出　　处：《矿产综合利用》2004年第6期11-15,共5页Multipurpose Utilization of Mineral Resources

基　　金：四川省科技厅重点攻关项目资助 ( 0 1CC0 0 6- 0 1 ) ;四川大学青年基金资助项目

摘　　要：论述了聚乙二醇在TiOSO4 常温氨水水解反应制备纳米TiO2 粉末中的作用 ,并对不同制备条件及热处理温度下的纳米TiO2 粉末结构、粒径大小和比表面积进行了表征。讨论了水解时聚乙二醇的加入与否和煅烧条件对纳米TiO2 粉末的团聚作用 ,以及对晶型转变温度、粒径大小、比表面积等因素的影响。结果表明 :水解时加入聚乙二醇制得的纳米TiO2 粉末团聚作用小 ,颗粒为球形 ,平均粒径为 7.4nm ,平均比表面积为 1 1 6.5 5m2 /g ,最高比表面积达 1 60 .92m2 /g。Nanometer TiO_2 powder was prepared by hydrolyzing the low-cost TiOSO_4 solution mixed with polythylene glycol(PEG) to solve the agglomeration problem of nano-TiO_2 powder. The microstructures and morphology of the nano-TiO_2 powder were characterized by XRD,TEM and SEM analyses. The influence of hydrolysis conditions and calcination temperature on the cry- stalline pattern,particle size and specific surface area of TiO_2 powder were also investigated. Results show that the nano-TiO_2 powder is possessed of spherical structure with little agglomeration. The average particle diameter and the average specific surface area of the powder are 7.4nm and 116.55m^2/g respectively,and the highest average specific surface area reaches 160.92m^2/g.

关 键 词：纳米TIO2粉末 团聚 聚乙二醇 水解 

分 类 号：O643[理学—物理化学]