| 浓度对活性艳红染料在粗糙银表面上吸附的影响 |
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| 引用本文： | 乔俊莲,李风亭,章非娟.浓度对活性艳红染料在粗糙银表面上吸附的影响[J].光谱实验室,2003,20(1):44-47. |
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| 作者姓名： | 乔俊莲 李风亭 章非娟 |
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| 作者单位： | 同济大学环境科学与工程学院国家污染控制与资源化研究重点实验室,上海市四平路1239号,200092 |
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| 摘 要： | 利用化学还原的方法制备了银溶胶，通过测定活性艳红浓度从10^-4－10^-8mol/L在粗糙的银表面上的表面增强拉曼光谱的变化，地活性艳红浓度与表面增强拉曼强度的关系及活性艳红在银溶胶表面的吸附取向。结果表明，活性艳红在10^-5mol/L时，表面增强拉曼信号最强，说明在此浓度时，活性艳红在银溶胶上的吸附量达到饱和；而大于此浓度后，过量的活性艳红分子在银溶胶上发生叠加，拉曼信号减弱，这种现象符合“稀溶液效应”。
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| 关 键 词： | 表面增强拉曼光谱 活性艳红 银表面 |
| 文章编号： | 1004-8138(2003)01-0044-04 |
| 修稿时间： | 2002年7月26日 |
Effect of Concentration on the Absorption of Reactive Red on Silver Surface |
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| QIAO Jun-Lian,LI Feng-Ting,ZHANG Fei-Juan.Effect of Concentration on the Absorption of Reactive Red on Silver Surface[J].Chinese Journal of Spectroscopy Laboratory,2003,20(1):44-47. |
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| Authors: | QIAO Jun-Lian LI Feng-Ting ZHANG Fei-Juan |
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| Abstract: | SERS spectra of reactive red absorbed on a silver colloid were measured by a Jobin-Yvon Raman spectrometer.By varying the concentration of reactive red from 10 -4-10 -8mol/L,the relationship between the concentration and intensity has been studied.It is found that the intensity reaches to a maximum value as the concentration of reactive red is 10 -5mol/L.The mechanism for this phenomenon is discussed. |
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| Keywords: | Surface Enhanced Raman Spectra Reactive Red Silver Surface |
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