|
|||||
|
|
| SnO2纳米粒子作为SERS基底的研究 | |
| 引用本文： | 侯近龙,贾祥非,薛向欣,陈雷,宋微,徐蔚青,赵冰.SnO2纳米粒子作为SERS基底的研究[J].高等学校化学学报,2012,33(1):139-143. |
| 作者姓名： | 侯近龙 贾祥非 薛向欣 陈雷 宋微 徐蔚青 赵冰 |
| 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;齐齐哈尔大学化学与化学工程学院,齐齐哈尔161006 2. 齐齐哈尔大学化学与化学工程学院,齐齐哈尔,161006 3. 吉林大学超分子结构与材料国家重点实验室,长春,130012 |
| 摘 要： | 采用溶胶-水热法制备了不同尺寸的SnO2纳米粒子, 并将其作为表面增强拉曼散射(Surface-enhanced Raman scattering, SERS)活性基底, 重点探讨了表面缺陷能级与SERS性能的关系. 观察到4-巯基苯甲酸(4-MBA)吸附在150 ℃水热合成的SnO2纳米粒子上的SERS 信号最强, 随着在空气中煅烧温度的升高, SERS信号逐渐减弱. 分别用透射电子显微镜、 紫外-可见光谱、 荧光光谱、 X射线衍射和X射线光电子能谱对SnO2纳米粒子进行了表征. 结果表明, SnO2纳米粒子的表面氧空位和缺陷等表面性质在增强拉曼散射性能中发挥着重要的作用, 表面氧空位和缺陷等含量越高其SERS信号就越强. |
| 关 键 词： | 表面增强拉曼散射 SnO2 电荷转移 4-巯基苯甲酸 |
| 收稿时间： | 2011-03-31 |
Surface-enhanced Raman Scattering of Molecules Adsorbed on SnO2 Nanoparticles |
|
| HOU Jin-Long , JIA Xiang-Fei , XUE Xiang-Xin , CHEN Lei , SONG Wei , XU Wei-Qing , ZHAO Bing.Surface-enhanced Raman Scattering of Molecules Adsorbed on SnO2 Nanoparticles[J].Chemical Research In Chinese Universities,2012,33(1):139-143. | |
| Authors: | HOU Jin-Long JIA Xiang-Fei XUE Xiang-Xin CHEN Lei SONG Wei XU Wei-Qing ZHAO Bing |
| Institution: | 1* (1.State Key Laboratory of Supramolecular Structure and Materials,Jilin University,Changchun 130012,China; 2.College of Chemistry and Chemical Engineering,Qiqihaer University,Qiqihaer 161006,China) |
| Abstract: | Pure SnO2 nanoparticles were prepared by the sol-hydrothermal method and were employed as surface-enhanced Raman scattering(SERS) active substrates.The relationships between defect levels and SERS effect of SnO2 nanoparticles were mainly investigated.The strongest SERS signals were observed when the 4-mercaptobenzoic acid molecules were adsorbed on the surface of SnO2 nanoparticles(hydrothermal pro-duct),with the increase of calcining temperature,the SERS signals became weaker.Transmission electron microscopy,UV-Vis diffuse reflectance spectroscopy,photoluminescence X-ray diffraction and X-ray photoelectron spectroscopy have been employed to investigate the SnO2 nanoparticles.The results indicated that surface properties of SnO2,such as surface defects and oxygen vacancies,etc,play important roles in the SERS.The higher is the content of surface defects and oxygen vacancies,the stronger is SERS signals. |
| Keywords: | Surface-enhanced Raman scattering(SERS) SnO2 Charge transfer 4-Mercaptobenzoic acid |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |
| 点击此处可从《高等学校化学学报》浏览原始摘要信息 | |
| 点击此处可从《高等学校化学学报》下载免费的PDF全文 | |