高等学校化学学报 ›› 1999, Vol. 20 ›› Issue (7): 1007.

• 论文 • 上一篇    下一篇

掺锌的TiO2纳米粉的结构相变及发光性质

袁志好1,2, 张立德1   

  1. 1. 中国科学院固体物理研究所, 合肥 230031;
    2. 安徽农业大学应用化学系, 合肥 230036
  • 收稿日期:1998-10-05 出版日期:1999-07-24 发布日期:1999-07-24
  • 通讯作者: 袁志好,男,35岁,博士研究生,副教授.
  • 作者简介:袁志好,男,35岁,博士研究生,副教授.
  • 基金资助:

    国家攀登计划基金(批准号:8520603)资助课题

Structural Phase Transformation and Photoluminescence of Zn-doped TiO2Nanopowders

YUAN Zhi-Hao1,2, ZHANG Li-De1   

  1. 1. Institute of Solid State Physics, Chinese Academy of Sciences Hefei, 230031;
    2. Department of Applied Chemistry, Anhui Agriculture University, Hefei, 230036
  • Received:1998-10-05 Online:1999-07-24 Published:1999-07-24

摘要: 采用溶胶-凝胶法制备了掺锌的TiO2纳米粉末,并用XRD、TEM、TG和DSC等技术考察了掺入的锌对TiO2的锐钛矿→金红石结构相变的影响.研究结果表明,锌的掺入可促进TiO2的结构相变,使相变温度显著降低.纳米态TiO2存在室温光致发光现象,在TiO2的纳米粉中掺入适量的锌,可显著增强体系的发光强度.

关键词: TiO2纳米粉, 结构相变, 锌掺杂物, 光致发光, 溶胶-凝胶法

Abstract: Zn-doped titania nanopowders was prepared by sol-gel method. Influence of the dopant on the anatase-to-rutile phase transformation of TiO2was investigated. It was found that the Zn dopant can effectively enhance the transformation by lowering the transition tem-perature. In addition, photoluminescence of gel derived TiO2nanopowders under 228 nm light excition can be observed at room temperature, and its relative luminescence intensity can be increased by doping Zn into the titania nanopowders.

Key words: Titania nanopowders, Structural phase transformation, Zn additive, Photolumi-nescence, Sol-gel method

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