中华医学超声杂志

应用化学 ›› 1996, Vol. 0 ›› Issue (6): 11-14.

• 研究论文 • 上一篇    下一篇

纳米TiO2微胶粒的光化反应制备机理及量子尺寸效应

马登军1, 谭俊茹2, 陈秀增2, 王素芝2, 李金声2   

  1. 1. 河北建筑工程学院;
    2. 天津大学化学系 天津 300072
  • 收稿日期:1996-01-31 修回日期:1996-07-04 出版日期:1996-12-10 发布日期:1996-12-10
  • 基金资助:
    国家自然科学基金

Photochemical Preparation and Quantum Size Effect of Nano-Grade TiO2 Micromicellae

Ma Dengjun1, Tan Junra2, Chen Xiuzeng2, Wang Shuzi2, Li Jinsheng2   

  1. 1. Hebei Architecture Engineering College;
    2. Department of Chemistry, Tianjin University, Tianjin 300072
  • Received:1996-01-31 Revised:1996-07-04 Published:1996-12-10 Online:1996-12-10

PDF

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摘要： 研究了由水相Ti3+制备纳米极TiO2微胶粒的光化反应机理及反应动力学,给出反应速率方程,讨论了TiO2微胶粒的量子尺寸效应,经电镜测试TiO2粒子的直径为15～25 nm,反应过程中由气相色谱仪监测生成物H2.

关键词: 光化学, 纳米, TiO2, 动力学

Abstract: In this paper the preparation of nano-grade TiO2 particles by photochemical reaction of Ti3+ in aqueous medium and the reaction kinetics are studied.Quantum size effect of absorption spectrum is discussed.The nano-size of TiO2 particles is determined by TEM to be 15～25 nm.The hydrogen evolved in the reaction process is analysed by gas chromatography.

Key words: photochemistry, nano-sized, titanium dioxide, kinetics

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