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单分散纳米二氧化钛的研制

唐芳琼1; 侯莉萍2; 郭广生2   

  1. 1. 中国科学院理化技术研究所, 北京 100101; 2. 北京化工大学可控化学反应科学与技术基础教育部重点实验室, 北京 100029
  • 收稿日期:2000-12-11 修回日期:2001-01-17 出版日期:2001-07-20 网络出版日期:2001-07-20

Preparation of TiO2 Nanometer Powders

TANG Fang-Qiong1; HOU Li-Ping2; GUO Guang-Sheng 2   

  1. 1. Technical Institute of physics and chemistry; Chinese Academy of Sciences; Beijing 100101; China; 2. Beijing University of Chemical Technology; Beijing 100029; China
  • Received:2000-12-11 Revised:2001-01-17 Published:2001-07-20 Online:2001-07-20

摘要: 以钛酸四丁酯为原料,采用控制金属醇盐水解和表面修饰保护方法研制单分散、粒径可控的纳米级二氧化钛(TiO)粒子.研究了反应物浓度、pH、反应时间、溶剂等反应条件对粒子粒径及分布的影响.采用透射电镜,红外光谱等技术对粒子的性能进行分析,结果表明,TiO水合粒子呈非晶态,分散性好,粒径在50~300nm之间随反应条件的不同而变化,经700℃热处理后主要为金红石型TiO

关键词: 单分散, 纳米粒子, 二氧化钛, 水解, 钛酸四丁酯

Abstract: Monodisperse controllable TiO2 nanoparticles were prepared by using the hydrolysis of metal alkoxides(titanium tetrabutoxide) and modification of surface of particles in alcohol solution. The effect of reactive condition including reactant concentration, reactant time and solvent was studied in detail. The properties of particles were analysised by TEM, IR and so on. The experimental results show that TiO2 particles prepared are amorphous, well dispersed, and their particle sizes vary from 50 to 300nm along with the change of reactive conditions.

Key words: nanoparticles, titania, hydrolysis, titanium tetrabutoxide

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