| 银和去合金银-金纳米粒子的SERS活性研究 |
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| 引用本文： | 周海辉,吴德印,胡建强,连天泉,田中群.银和去合金银-金纳米粒子的SERS活性研究[J].光散射学报,2004,16(3):221-224. |
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| 作者姓名： | 周海辉 吴德印 胡建强 连天泉 田中群 |
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| 作者单位： | 1. 厦门大学化学系,固体表面物理化学国家重点实验室,厦门,361005
2. 美国乔治亚州亚特兰大市Emory大学化学系,30322 |
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| 基金项目： | 国家自然科学基金资助(20228020和20021002) |
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| 摘 要： | 用乙二醇还原硝酸银,聚乙烯吡咯烷酮作表面活性剂合成了大量的银纳米颗粒。银纳米颗粒和HAuCl4发生置换反应后形成去合金银-金纳米粒子。以吡啶和SCN-作为探针分子研究了它们的SERS活性。结果表明,当探针分子吸附于银纳米颗粒和去合金银-金纳米粒子上时,探针分子的特征振动峰强度增强、频率发生位移。SERS可表征纳米粒子物理和化学性质的变化。
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| 关 键 词： | SERS 银 金 纳米粒子 |
| 文章编号： | 1004-5929(2004)03-0221-04 |
| 收稿时间： | 2003/7/21 |
| 修稿时间： | 2003年7月21日 |
The Study of SERS on the Silver Nanoparticles and Dealloyed Ag-Au Nanoparticles |
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| ZHOU Hai-Hui,WU De-yin,HU Jian-Qiang,LIAN Tian-qiang,TIAN Zhong-qun.The Study of SERS on the Silver Nanoparticles and Dealloyed Ag-Au Nanoparticles[J].Chinese Journal of Light Scattering,2004,16(3):221-224. |
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| Authors: | ZHOU Hai-Hui WU De-yin HU Jian-Qiang LIAN Tian-qiang TIAN Zhong-qun |
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| Institution: | ZHOU Hai-Hui~1,WU De-yin~1,HU Jian-Qiang~1,LIAN Tian-qiang~2,TIAN Zhong-qun~ |
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| Abstract: | Silver nanoparticles were synthesized by reducing silver nitrate with ethylene glycol in the presence of poly(vinyl pyrrolidone). Then large quantities of dealloyedAg-Au nanoparticles were prepared by reacting aquesous HAuCl_4 solutions with silver nanoparticles. Finally, SERS activity of silver nanoparticles and dealloyed Ag-Aunanoparticle was investigated by using pyridine and SCN~- as probe molecules. The results indicate the frequencies and intensities of active vibrational mode of pyridine and SCN~- change with silver nanoparticles and dealloyed Ag-Au nanoparticles. Our reseult also shows SERS could be used to characterize the physical and chemical properties of the nanoparticle substrates. |
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| Keywords: | SERS silver gold nanoparticle |
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