本文已被：浏览 1952次 下载 3次
投稿时间：2006-03-22
投稿时间：2006-03-22
中文摘要: 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。
中文关键词: 纳米TiO2 稀土 掺杂 荧光光谱 紫外-可见漫反射光谱
Abstract:Nanosized lanthanide-doped TiO2 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 TiO2 nanoparticles and the intensity of peaks in the emission spectra varied with the doping concentration. Compared with undoped TiO2, the absorption edges of Ce-doped samples were red-shifted remarkably and those of other lanthanide ions doped samples were blue shifted.
文章编号：20060520 中图分类号： 文献标志码：
基金项目:
作者简介:
引用文本：
侯廷红,毛健,杨玲.稀土离子掺杂纳米TiO2的谱学特性研究[J].工程科学与技术,2006,38(5):117-121.
.Spectroscopic Properties of Lanthanide Doped Titanium Dioxide Nanoparticles[J].Advanced Engineering Sciences,2006,38(5):117-121.
引用文本：
侯廷红,毛健,杨玲.稀土离子掺杂纳米TiO2的谱学特性研究[J].工程科学与技术,2006,38(5):117-121.
.Spectroscopic Properties of Lanthanide Doped Titanium Dioxide Nanoparticles[J].Advanced Engineering Sciences,2006,38(5):117-121.