引用本文:
【打印本页】   【HTML】   【下载PDF全文】   查看/发表评论  【EndNote】   【RefMan】   【BibTex】
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 7826次   下载 1852 本文二维码信息
码上扫一扫!
分享到: 微信 更多
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
作者单位
李晓俊 山东省科学院新材料研究所济南250014; 
司德君 中国科技大学化学物理系合肥230026 
方均 中国科技大学化学物理系合肥230026 
姜志全 中国科技大学化学物理系合肥230026 
黄伟新 中国科技大学化学物理系合肥230026 
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:
基金项目:supported by the "Hundred Talent Program" of Chinese Academy of Sciences and Shan dong Academy of Sciences
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*
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