第 36 卷第 4 期 Vol. 36 No. 4 2006 年 8 月 Aug 2006

所属栏目：功能材料 纳米TiO_2的制备及其对甲醛的光催化降解性能

李辉勇; 金密; 周军; 李志光; 戴翔; 赵律(湖南农业大学理学院; 湖南长沙; 410128)

摘　要：以硫酸钛为前驱体,采用沉淀-溶胶法制备纳米TiO2,进行甲醛的光催化降解实验,考察了制备条件对光催化性能的影响。结果表明:当硫酸钛浓度为0.05mol/L、水解温度80℃、时间4h,0.10mol/LKOH聚沉、pH=2、熟化温度90～100℃、时间10min,煅烧温度450℃、时间4h时,制得的纳米TiO2对甲醛的降解效率6h内可达78%。

关键词：二氧化钛; 光催化; 降解; 甲醛

中图分类号：TN104.3　　文献标识码：A　　文章编号：1009-9212(2006)04-0043-03

Influence of Preparation of Nanometer TiO_2 on Photocatalytic Degradation Performance of Formaldehyde

LI Hui-yong; JIN Mi; ZHOU Jun; LI Zhi-guang; DAI Xiang; ZHAO Lü （College of Sciences; Hunan Agricultural University; Changsha 410128; China）

Abstract：Nanometer TiO2 particles were prepared with Ti(SO4)2 as precursor using the precipitation-sol method,and its photocatalytic degradation experiments of formaldehyde were carried out. Influence of preparation conditions of TiO2 on photocatalytic degradation performance was studied. The results showed that degradation rate of formaldehyde attained 78% in 6 hrs at the concentration of Ti(SO4)2 0.05 mol/L,hydrolization temperature 80℃ and time 4 hrs,pH=2 for congregatation with 0.10 mol/L KOH,maturation temperat...

Key words：titanium oxide（TiO2）; photochemical catalysis; degradation; formaldehyde

基金项目：湖南农业大学青年基金项目(05QN13)

收稿日期：2006-04-17

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