溶胶／凝胶法制备纳米TiO2／Al2O3  

Preparation of TiO2/Al2O3 nanoparticles with sol-gel method

作　　者：周利民[1,2] 王一平[2] 刘峙嵘[1] 

机构地区：[1]东华理工学院核资源与环境教育部重点实验室,江西抚州344000 [2]天津大学化工学院,天津300072

出　　处：《功能材料》2007年第A06期2106-2108,共3页Journal of Functional Materials

基　　金：基金项目：江西省自然科学基金资助项目（052002）;东华理工学院核资源与环境工程技术中心开放测试基金资助项目（051107）

摘　　要：采用溶胶-凝胶法制备纳米TiO2／Al2O3，考察了陈化温度及络舍比对TiO2／Al2O3比表面积及孔结构参数的影响。结果表明，TiO2／Al2O3平均粒径〈70nm，比表面积超过210m^2／g，平均孔径0．8-1．4nm。适当降低陈化温度及加络合剂有利于TiO2／Al2O3粒子的分散。Al2O3的存在提高了TiO2／Al2O3的热稳定性。TiO2/Al2O3 composite nanoparticles were prepared by sol-gol method. The effect of sol aging temperature and complexing ratio on the specific surface area and pore structure parameters of TiO2/Al2O3 was studied. The results showed that TiO2/Al2O3 had the mean diameter of less than 70nm, specific surface area superior to 210m^2/g and the pore size range of 0.8-1.4nm. The decrease of aging temperature and the addition of complexing ligand favored the dispersion of TiO2/Al2O3 particles. The thermal stability of TiO2/Al2O3 was improved in the presence of Al2O3.

关 键 词：溶胶 凝胶法 纳米TiO2/Al2O3 陈化温度 络合比 

分 类 号：O646.8[理学—物理化学]