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| 正电性胶态纳米银中加入凝聚剂后的表面增强拉曼光谱 | |
| 引用本文： | 司民真,徐媛,武荣国,张鹏翔.正电性胶态纳米银中加入凝聚剂后的表面增强拉曼光谱[J].光谱学与光谱分析,2006,26(12):2251-2253. |
| 作者姓名： | 司民真 徐媛 武荣国 张鹏翔 |
| 作者单位： | 1. 楚雄师范学院物理与电子科学系,云南,楚雄,675000 2. 楚雄市环境监测站,云南,楚雄,675000 3. 昆明理工大学光电子新材料研究所,云南,昆明,651000 |
| 摘 要： | 在柠檬酸还原制备的正电性胶态纳米银中加入凝聚剂HNO3和NaNO3后,用波长为633 nm的激光激发,获得了较强的表面增强拉曼散射光谱(SERS谱),通过讨论及实验明确该SERS谱是来自于还原剂中的柠檬酸根离子,并说明该方法制备的纳米银的吸附层是带正电的银离子,扩散层是带负电的柠檬酸根离子. |
| 关 键 词： | 正电性胶态纳米银 凝聚剂 SERS 柠檬酸根离子 |
| 文章编号： | 1000-0593（2006）12-2251-03 |
| 收稿时间： | 2005-11-16 |
| 修稿时间： | 2006-02-26 |
SERS of Positive Silver Colloids with Addition of Aggregating Agent |
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| SI Min-zhen,XU Yuan,WU Rong-guo,ZHANG Peng-xiang.SERS of Positive Silver Colloids with Addition of Aggregating Agent[J].Spectroscopy and Spectral Analysis,2006,26(12):2251-2253. | |
| Authors: | SI Min-zhen XU Yuan WU Rong-guo ZHANG Peng-xiang |
| Institution: | Department of Physics and Electronic Science, Chuxiong Teacher's College, Chuxiong 675000, China. |
| Abstract: | A very strong surface-enhanced Raman scattering (SERS) spectrum was obtained when adding some aggregating agent such as HNO3 and NaNO3 in positive silver colloid reduced by citrate using 633 nm radiation. In aid of characterizing the SERS of this process, SERS from positive silver colloid with the addition of H2SO3, HCl, and NH3 recorded. It was found that the SERS come from the citrate when adding HNO3, NaNO3 and H2 SO3, from NH3 and citrate when adding NH3, and only from Ag-Cl when adding HCl through comparing the spectra. Furthermore, the surface layer of positive silver colloid particles could be Ag+ , and the diffusion layer could be citrate. |
| Keywords: | Positive silver Colloids Aggregating agent SERS Citrate |
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