| 稀土离子掺杂纳米TiO2的谱学特性研究 |
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| 引用本文： | 侯廷红,毛健,杨玲.稀土离子掺杂纳米TiO2的谱学特性研究[J].四川大学学报(工程科学版),2006,38(5):117-121. |
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| 作者姓名： | 侯廷红 毛健 杨玲 |
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| 作者单位： | 四川大学,材料科学与工程学院,四川,成都,610065 |
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| 摘 要： | 采用sol-gel法制备不同稀土元素(La,Ce,Pr,Nd,Sm)掺杂TiO2纳米粒子，采用荧光光谱和紫外-可见漫反射光谱对样品的谱学特性进行对比研究。结果表明，Sm掺杂引起新的发光现象，荧光谱中两个发射峰的强度随Sm掺杂浓度的改变而改变，而其余稀土元素掺杂只影响纯TiO2发射峰的位置和强度；Ce掺杂造成漫反射光谱的吸收边发生红移，且红移幅度随Ce掺杂浓度的改变而改变，其余稀土元素掺杂则造成吸收边蓝移。
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| 关 键 词： | 纳米TiO2 稀土 掺杂 荧光光谱 紫外-可见漫反射光谱 |
| 文章编号： | 1009-3087（2006）05-0117-05 |
| 收稿时间： | 03 22 2006 12:00AM |
| 修稿时间： | 2006-03-22 |
Spectroscopic Properties of Lanthanide Doped Titanium Dioxide Nanoparticles |
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| HOU Ting-hong,MAO Jian,YANG Ling,ZHANG Xiao-li,TU Ming-jing.Spectroscopic Properties of Lanthanide Doped Titanium Dioxide Nanoparticles[J].Journal of Sichuan University (Engineering Science Edition),2006,38(5):117-121. |
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| Authors: | HOU Ting-hong MAO Jian YANG Ling ZHANG Xiao-li TU Ming-jing |
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| Affiliation: | School of Materials Sci. and Eng.,Sichuan Univ.,Chengdu 610065,China;School of Materials Sci. and Eng.,Sichuan Univ.,Chengdu 610065,China;School of Materials Sci. and Eng.,Sichuan Univ.,Chengdu 610065,China |
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| Abstract: | Nanosized lanthanide-doped TiO_2 samples with different Ti/Ln(Ln=La,Ce,Pr,Nd,and Sm) atomic ratios were prepared by sol-gel method using tetrabutyl titanate and lanthanide nitrate as precursors,and were characterized by fluorescence and UV-vis diffuse reflection spectroscopy.Unique fluorescence properties were observed from Sm-doped TiO_2 nanoparticles and the intensity of peaks in the emission spectra varied with the doping concentration.Compared with undoped TiO_2,the absorption edges of Ce-doped samples were red-shifted remarkably and those of other lanthanide ions doped samples were blue-shifted. |
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| Keywords: | titanium dioxide lanthanide doping fluorescence spectroscopy UV-vis spectroscopy |
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