| 二氧化钛系列光催化剂的拉曼光谱 |
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| 引用本文： | 王建强,辛柏福,于海涛,谢玉涛,赵冰,付宏刚.二氧化钛系列光催化剂的拉曼光谱[J].高等学校化学学报,2003,24(7):1237-1240. |
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| 作者姓名： | 王建强 辛柏福 于海涛 谢玉涛 赵冰 付宏刚 |
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| 作者单位： | 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 |
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| 基金项目： | 国家自然科学基金 (批准号 :2 0 1710 16 ,2 0 2 710 19)，黑龙江省杰出青年科学基金 (2 0 0 2 )，教育部科学技术研究重点项目(2 0 0 2 )，黑龙江省普通高等学校骨干教师创新能力资助计划 (2 0 0 1)，黑龙江省自然科学基金 (批准号 :B0 0 -0 6 )资助 |
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| 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.
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| 关 键 词： | TiO2 拉曼光谱 掺杂 负载薄膜 |
| 文章编号： | 0251-0790(2003)07-1237-04 |
| 收稿时间： | 2002-02-27 |
Raman Spectroscopy of Titanium Dioxide Photocatalyst |
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| WANG Jian-Qiang ,XIN Bai-Fu ,YU Hai-Tao ,XIE Yu-Tao ,ZHAO Bing ,FU Hong-Gang.Raman Spectroscopy of Titanium Dioxide Photocatalyst[J].Chemical Research In Chinese Universities,2003,24(7):1237-1240. |
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| Authors: | WANG Jian-Qiang XIN Bai-Fu YU Hai-Tao XIE Yu-Tao ZHAO Bing FU Hong-Gang |
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| Institution: | 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 |
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| 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. |
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| Keywords: | Titanium dioxide Raman spectrum Doping Coating film |
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