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| Co-doping of Iron and Cerium in Titanium Dioxide: Observation of a Cooperative Effect |
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Xiao-jun Li1, De-jun Si2, Jun Fang2, Zhi-quan Jiang2, Wei-xin Huang*2
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1.New Materials Research Institute, Shandong Academy of Sciences, Ji'nan 250014, China;2.Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
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| Abstract: |
| The co-doping of iron and cerium into TiO2 was studied by means of X-ray diffraction, Raman spectroscopy, UV-Vis diffuse reflectance spectroscopy and X-ray photoelectron spectroscopy. when separately doping via the sol-gel method, iron was introduced in the framework of anatase TiO2 whereas cerium was not; interestingly, both iron and cerium were introduced in the framework when co-doping by the sol-gel method. The co-doped TiO2 behaves much more intense surface hydroxyl concentration than the separately-doped and pure TiO2. This observation demonstrates for the first time a cooperative effect in the co-doping of transitional metals in the framework of TiO2. |
| Key words: Titanium dioxide, Iron, Cerium, doping, Cooperative effect |
| FundProject:supported by the "Hundred Talent
Program" of Chinese Academy of Sciences and Shan
dong Academy of Sciences |
附件 |
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| 铁和铈共掺杂二氧化钛中的协同效应 |
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李晓俊 1, 司德君 2, 方均 2, 姜志全 2, 黄伟新 2
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1.山东省科学院新材料研究所，济南250014;2.中国科技大学化学物理系，合肥230026
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| 摘要: |
| 利用X射线衍射、拉曼光谱、紫外-可见漫反射光谱和X射线
光电子能谱研究了铁和铈对TiO2的共掺杂. 当利用溶胶-凝胶法进
行单独掺杂时，铁离子可以进入锐钛矿TiO2骨架，但铈离子却不
能进入TiO2骨架；当铁和铈共掺杂时，铁离子和铈离子可以同时进
入TiO2骨架. 铁-铈共掺杂的TiO2表面羟基浓度要远高于单独掺杂或
者纯的TiO2. 第一次观察到过渡金属离子共掺杂进入TiO2骨架的协
同效应. |
| 关键词: TiO2，铁，铈，掺杂，协同效应 |
| DOI：10.1360/cjcp2006.19(6).539.4 |
| 分类号: |
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