| 纳米TiO2的光致发光性能与SERS效应的关系 |
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| 引用本文： | 杨立滨,江欣,陈雷,阮伟东,徐蔚青,赵冰.纳米TiO2的光致发光性能与SERS效应的关系[J].高等学校化学学报,2010,31(5):1019-1022. |
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| 作者姓名： | 杨立滨 江欣 陈雷 阮伟东 徐蔚青 赵冰 |
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| 作者单位： | 1. 吉林大学超分子结构与材料国家重点实验室, 长春 130012;
2. 佳木斯大学化学与药学院, 佳木斯 154007 |
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| 基金项目： | 国家自然科学基金，教育部引智计划，黑龙江省普通高等学校青年学术骨干支持计划项目 |
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| 摘 要： | 以采用溶胶-水热法制备的纯TiO2及Zn掺杂的TiO2纳米粒子作为SERS活性基底, 研究了其光致发光机制及其与表面增强拉曼散射(SERS)性能的关系. 结果表明, TiO2纳米粒子的表面缺陷和氧空位等表面性质在其光致发光和增强拉曼散射性能中发挥着重要的作用. 在表面缺陷和氧空位含量较低时, TiO2纳米粒子的光致发光光谱(PL)信号越强, 其SERS性能就越高; 当TiO2纳米粒子的表面缺陷和氧空位含量达到一定程度时, TiO2纳米粒子的PL信号越弱, 其SERS性能越高.
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| 关 键 词： | 表面增强拉曼散射 二氧化钛 电荷转移 光致发光 |
| 收稿时间： | 2009-04-21 |
Relationship Between Photoluminescence Performance and SERS Effect of TiO2 Nanoparticles |
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| YANG Li-Bin,JIANG Xin,CHEN Lei,RUAN Wei-Dong,XU Wei-Qing,ZHAO Bing.Relationship Between Photoluminescence Performance and SERS Effect of TiO2 Nanoparticles[J].Chemical Research In Chinese Universities,2010,31(5):1019-1022. |
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| Authors: | YANG Li-Bin JIANG Xin CHEN Lei RUAN Wei-Dong XU Wei-Qing ZHAO Bing |
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| Institution: | 1. State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun 130012, China;
2. College of Chemistry and Pharmacology, Jiamusi University, Jiamusi 154007, China |
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| Abstract: | Pure and Zn-doped TiO2 nanoparticles were prepared by a sol-hydrothermal method and employed as surface-enhanced Raman scattering(SERS)-active substrates. The relationship between photoluminescence performance and SERS effect of TiO2 nanoparticles as well as photoluminescence mechanism were mainly investigated. The results indicate that surface properties of TiO2, such as surface defects and oxygen vacancies, etc, play important roles in the PL and SERS. When the contents of surface defects and oxygen vacancies are relatively low, the stronger is PL signal of TiO2 nanoparticles, the higher is SERS performance; however, when the contents of surface defects and oxygen vacancies are relatively high, the weaker is PL signal, the higher is SERS performance. |
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| Keywords: | Surface-enhanced Raman scattering(SERS) TiO2 Charge transfer Photoluminescence |
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