高等学校化学学报

高等学校化学学报 ›› 2002, Vol. 23 ›› Issue (10): 1956.

• 研究论文 • 上一篇    下一篇

紫外光辐射对TiO2溶胶的影响研究

管自生, 姚建年, 马颖, 宋延林, 江雷   

  1. 中国科学院化学研究所分子科学中心, 北京 100080
  • 收稿日期:2001-08-03 出版日期:2002-10-24 发布日期:2002-10-24
  • 通讯作者: 江　雷(1965年出生),男,研究员,博士生导师,从事表面与界面功能材料研究.E-mail:jianglei@infoc3.icas.ac.cn E-mail:jianglei@infoc3.icas.ac.cn
  • 基金资助:

    中国科学院资助(批准号:KJ952J1522);973项目(批准号:G1999064504)资助

A Study of Influence on TiO2 Sol with UV Irradiation

GUAN Zi-Sheng, YAO Jian-Nian, MA Ying, SONG Yan-Lin, JIANG Lei   

  1. Center for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China
  • Received:2001-08-03 Online:2002-10-24 Published:2002-10-24

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摘要： 用紫外-可见吸收光谱、动态光散射与透射电镜研究紫外光辐射对T2溶胶的影响,结果表明,光辐射使T2溶胶在可见光区的吸收减少,紫外区吸收增加,吸收带隙增大.与非光辐射的T2溶胶粒子相比,光辐射使T2溶胶粒子分布均匀且平均粒径减小,提高了T2纳米粒子在室温下的晶化程度.

关键词: T2溶胶, 光辐射, 紫外-可见吸收光谱(UV-Vis), 动态光散射(DLS), 透射电镜(TEM)

Abstract: Influence on TiO2 sol irradiated with UV was studied by UV-Vis absorption spectra, dynamic laser light scattering(DLS) and TEM. The results show that absorbance of TiO2 sol decreased in the visible region and increased in the near ultraviolet region, and the bandgap of TiO2 sol increased during the process of UV irradiation. Comparison of TiO2 sol without UV irradiation, average size of TiO2 sol particles irradiated with UV decreased and its size distribution was more homogenous, and its crystallite was improved and anatase TiO2 was formed at room temperature.

Key words: TiO2 sol, Irradiation, UV-Vis spectra, Dynamic laser light scattering(DLS), TEM

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