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Sol-Gel法制备纳米二氧化钛粉体
Preparation of nanosized TiO2 powders by Sol-Gel method
【摘要】 以钛酸四丁酯为原料,采用溶胶-凝胶法(Sol-Gel)制备出了晶粒尺寸6～23nm的二氧化钛粉体,并对酸度.制备温度和升温速率等条件进行了研究.实验证明:室温下,硝酸与钛酸酯摩尔比为0.30～0.39;450℃左右煅烧2h可得锐钛型二氧化钛纳米粉体;600℃煅烧2h得到金红石型二氧化钛粉体.
【Abstract】 The nanosized TiO2 powders (6～ 23 nm) are prepared by Sol-Gel me thod from Ti(OC4H9)4 in C2H5OH. The influences of acidity, calcine temperature, heat rate on the size of particle have been investigated. The results indicate t hat the best mol ratio of HNO3 and Ti(OC4H9)4 is 0.30～ 0.39 at room temperature ,and calcined at 450 ℃ for 2 h,titania is anatase; at 600 ℃ for 2 h, titan ia was rutile.
【基金】 宁夏回族自治区科技攻关基金资助项目(2001-109-13)
- 【文献出处】 宁夏工程技术 ,Ningxia Engineering Technology , 编辑部邮箱 ,2003年03期
- 【分类号】O614.411
- 【被引频次】20
- 【下载频次】443