| F离子掺杂TiO2的性能研究 |
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| 引用本文： | 江宏富 周作兴 刘杏芹 孟广耀. F离子掺杂TiO2的性能研究[J]. 感光科学与光化学, 2007, 25(3): 223-229 |
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| 作者姓名： | 江宏富 周作兴 刘杏芹 孟广耀 |
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| 作者单位： | 中国科学技术大学材料科学与工程系,安徽合肥230026 |
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| 基金项目： | 国家973规划项目（2003CB615700） |
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| 摘 要： | 以NH4F为掺杂剂，采用溶胶-凝胶法制备F离子掺杂型TiO2光催化剂，对其进行XRD、XPS和PL表征，结果表明，F离子掺杂ToO2由于Ti—F配位体的形成而能抑制金红石相的生成，同时F离子掺杂能增加TiO2表面缺陷浓度并降低Ti2P键的结合能，另外，由于F离子能取代Ti—OH配位体而降低了表面羟基氧浓度．光催化研究结果表明，F离子掺杂提高了TiO2光催化活性近1．5倍．
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| 关 键 词： | TiO2 光催化 F离子掺杂 NH4F |
| 文章编号： | 1000-3231（2007）03-0223-07 |
| 收稿时间： | 2006-11-15 |
| 修稿时间： | 2007-01-18 |
Study on the Performance of F-Doped TiO2 |
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| JIANG Hong-fu, ZHOU Zuo-xing, LIU Xing-qin, MENG Guang-yao. Study on the Performance of F-Doped TiO2[J]. Photographic Science and Photochemistry, 2007, 25(3): 223-229 |
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| Authors: | JIANG Hong-fu ZHOU Zuo-xing LIU Xing-qin MENG Guang-yao |
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| Affiliation: | Department of Material Science and Engineering, University of Science and Technology of China, Hefei 230026, Anhui , P. R . China |
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| Abstract: | F-doped TiO2 photocatalyst was prepared by sol-gel method with NH4F as dopant. The catalyst was characterized by XRD, XPS, and PL. It was found that the phase formation of mtile was suppressed by F-doping due to the formation of Ti-F ligand. Moreover, the surface defect of TiO2 was increased while the binding energy of Ti2p was decreased by F-doping. It was also found that the surface OOH concentration was decreased by F-doping due to the F ions replacing Ti-OH bond. The results of photocatalytic reaction indicated that the photocatalytic activity of F-doped TiO2 was 1.5 times higher than that of undoped TiO2. |
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| Keywords: | TiO2 photocatalysis F-doping NH4F |
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