| 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].影像科学与光化学,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;中国科学技术大学,材料科学与工程系,安徽,合肥,230026;中国科学技术大学,材料科学与工程系,安徽,合肥,230026;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： | 国家重点基础研究发展计划(973计划) |
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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TiO2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 |
| 收稿时间： | 2006-11-15 |
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].Imaging 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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| Institution: | 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 rutile 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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