纳米TiO2的光致发光性能与SERS效应的关系

高等学校化学学报 ›› 2010, Vol. 31 ›› Issue (5): 1019.

纳米TiO₂的光致发光性能与SERS效应的关系

杨立滨^1,2, 江欣², 陈雷¹, 阮伟东¹, 徐蔚青¹, 赵冰¹

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

收稿日期:2009-04-21 出版日期:2010-05-10 发布日期:2010-05-10
通讯作者: 赵冰, 男, 博士, 教授, 博士生导师, 主要从事分子光谱研究. E-mail: zhaob@mail.jlu.edu.cn
基金资助:
国家自然科学基金(批准号: 20773044, 20873050)、教育部引智计划(批准号: B06009)和黑龙江省普通高等学校青年学术骨干支持计划项目(批准号: 1154G13)资助.

Relationship Between Photoluminescence Performance and SERS Effect of TiO₂ Nanoparticles

YANG Li-Bin^1,2, JIANG Xin², CHEN Lei¹, RUAN Wei-Dong¹, XU Wei-Qing¹, ZHAO Bing^1*

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

Received:2009-04-21 Online:2010-05-10 Published:2010-05-10
Contact: ZHAO Bing. E-mail: zhaob@mail.jlu.edu.cn
Supported by:
国家自然科学基金(批准号: 20773044, 20873050)、教育部引智计划(批准号: B06009)和黑龙江省普通高等学校青年学术骨干支持计划项目(批准号: 1154G13)资助.

摘要/Abstract

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.

关键词: 表面增强拉曼散射; 二氧化钛; 电荷转移; 光致发光

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.

Key words: Surface-enhanced Raman scattering(SERS); TiO2; Charge transfer; Photoluminescence

TrendMD:

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. 高等学校化学学报, 2010, 31(5): 1019.

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. Chem. J. Chinese Universities, 2010, 31(5): 1019.

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纳米TiO₂的光致发光性能与SERS效应的关系

Relationship Between Photoluminescence Performance and SERS Effect of TiO₂ Nanoparticles

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