高等学校化学学报 ›› 2003, Vol. 24 ›› Issue (7): 1237.

• 论文 • 上一篇    下一篇

二氧化钛系列光催化剂的拉曼光谱

王建强1, 辛柏福1, 于海涛1, 谢玉涛2, 赵冰2, 付宏刚1d:\PDF\.pdf   

  1. 1. 黑龙江大学化学化工学院, 哈尔滨 150080;
    2. 吉林大学超分子结构与材料教育部重点实验室, 长春 130023
  • 收稿日期:2002-02-27 出版日期:2003-07-24 发布日期:2003-07-24
  • 通讯作者: 付宏刚(1962年出生),男,博士,教授,主要从事材料化学及理论化学研究工作.E-mail:fuhg@vip.sina.com E-mail:fuhg@vip.sina.com
  • 基金资助:

    国家自然科学基金(批准号:20171016,20271019);黑龙江省杰出青年科学基金(2002);教育部科学技术研究重点项目(2002);黑龙江省普通高等学校骨干教师创新能力资助计划(2001);黑龙江省自然科学基金(批准号:B00-06)资助

Raman Spectroscopy of Titanium Dioxide Photocatalyst

WANG Jian-Qiang1, XIN Bai-Fu1, YU Hai-Tao1, XIE Yu-Tao2, ZHAO Bing2, FU Hong-Gang1   

  1. 1. Institute of Chemistry and Chemical Engineering, Heilongjiang University, Harbin 150080, China;
    2. Key Laboratory for Supramolecular Structure and Materials of Ministry of Education, Jilin University, Changchun 130023, China
  • Received:2002-02-27 Online:2003-07-24 Published:2003-07-24

摘要: 采用溶胶-凝胶法制备了TiO2粉体和薄膜光催化剂.使用FT-Raman光谱和激光共聚焦拉曼光谱研究了粉体和薄膜的拉曼光谱,探讨了热处理条件、Fe3+掺杂和以硅胶为载体的薄膜化所引起的TiO2结构变化.结果表明,TiO2在350℃存在由无定形向锐钛矿相的转变,600℃下存在锐钛矿相向金红石相的转变,750℃下完全转变为金红石相;掺杂会引起TiO2的晶格畸变,导致拉曼谱峰宽化;以硅胶为载体的TiO2负载薄膜的部分拉曼谱峰与粉体相比,有一定的位移和宽化.

关键词: TiO2, 拉曼光谱, 掺杂, 负载薄膜

Abstract: Nano-size TiO2, Fe3+-TiO2, TiO2/SiO2, and Fe3+-TiO2/SiO2 were prepared by sol-gel method. The structural change of TiO2 caused by different calcining conditions, Fe3+-doped contents, and formation of film on silica were studied by FT-Raman and confocal Raman technologies. The experimental results show that the different crystalline phases were observed at different calcinating temperatures. The titanium dioxide powder heated at 350-550 ℃ for two hours forms an anatase phase. The anatase phase materials transforms to rutile phase at 600 ℃ and transits completely to rutile phase calcining for two hours at 750 ℃. After doping Fe3+, the FWHM at 144cm-1 of Fe3+-TiO2 and Fe3+-TiO2/SiO2 is broadened apparently compared with that of TiO2 and TiO2/SiO2, respectively. Some peaks of TiO2/SiO2 coating film has some shift and broadening compared with those of TiO2.

Key words: Titanium dioxide, Raman spectrum, Doping, Coating film

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