| 银/铂双金属中空纳米颗粒的制备及光学性质研究 |
| |
| 引用本文： | 高继宁,任湘菱,唐芳琼.银/铂双金属中空纳米颗粒的制备及光学性质研究[J].影像科学与光化学,2006,24(5):360-365. |
| |
| 作者姓名： | 高继宁 任湘菱 唐芳琼 |
| |
| 作者单位： | 1. 中国科学院, 理化技术研究所, 北京, 100080;2. 中国科学院, 研究生院, 北京, 100039 |
| |
| 基金项目： | 国家自然科学基金;北京市自然科学基金 |
| |
| 摘 要： | 通过以Ag纳米颗粒为模板的置换和沉积反应,制备了Ag/Pt双金属复合纳米颗粒.用透射电子显微镜(TEM)对颗粒的形貌、尺寸和结构进行了表征,发现复合颗粒具有中空结构.紫外可见吸收光谱(UV-Vis)研究表明,Ag/Pt双金属中空复合纳米颗粒具有单峰的表面等离子共振吸收特征,随着反应溶液中氯铂酸和硝酸银摩尔比的增加,吸收峰先红移后蓝移.表面增强拉曼光谱实验结果表明,Ag/Pt双金属复合纳米颗粒对吡啶分子具有较好的增强效果.
|
| 关 键 词： | 中空纳米颗粒 双金属纳米颗粒 表面等离子共振 表面增强拉曼光谱 |
| 收稿时间： | 2006-04-13 |
Preparation and Optical Properties of Ag/Pt Bimetallic Hollow Nanoparticles |
| |
| GAO Ji-ning,REN Xiang-ling,TANG Fang-qiong.Preparation and Optical Properties of Ag/Pt Bimetallic Hollow Nanoparticles[J].Imaging Science and Photochemistry,2006,24(5):360-365. |
| |
| Authors: | GAO Ji-ning REN Xiang-ling TANG Fang-qiong |
| |
| Affiliation: | 1. Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100080, P. R. China;2. Graduate School of the Chinese Academy of Sciences, Beijing 100039, P. R. China. |
| |
| Abstract: | Bimatallic Ag/Pt nanoparticles were prepared based on Ag nanoparticle-mediated replacement and deposition reactions.The morphology,size,and structure of the bimetallic nanoparticles were characterized by transmission electron microscopy;it was found that these nanoparticles are bearing hollow interiors.The UV-Vis absorption spectra show the characteristic of single plasmon resonance absorption band and the peak initially red shift and then blue shift with increasing the molar ratio of H_2PtCl_6 to AgNO_3 in the reacting solution.Surface enhanced Raman spectroscopy results show that these nanoparticles remain SERS active when pyridine was used as adsorbate probe. |
| |
| Keywords: | hollow nanoparticles bimetallic nanoparticles surface plasmon resonance surface enhanced Raman spectroscopy |
| 本文献已被 万方数据 等数据库收录！ |
| 点击此处可从《影像科学与光化学》浏览原始摘要信息 |
|
点击此处可从《影像科学与光化学》下载全文 |
|
