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Co-doping of Iron and Cerium in Titanium Dioxide: Observation of a Cooperative Effect
Xiao-jun Li ,De-jun Si ,Jun Fang ,Zhi-quan Jiang ,Wei-xin Huang*
Author NameAffiliation
Xiao-jun Li New Materials Research Institute, Shandong Academy of Sciences, Ji'nan 250014, China; 
De-jun Si Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China 
Jun Fang Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China 
Zhi-quan Jiang Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China 
Wei-xin Huang* Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China 
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
铁和铈共掺杂二氧化钛中的协同效应
李晓俊 ,司德君 ,方均 ,姜志全 ,黄伟新
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: