| 用双还原法制备三角形银纳米片及其光学性能 |
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| 引用本文： | 赖文忠,赵威,杨容,李星国.用双还原法制备三角形银纳米片及其光学性能[J].物理化学学报,2010,26(4):1177-1183. |
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| 作者姓名： | 赖文忠 赵威 杨容 李星国 |
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| 作者单位： | Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China; Department of Chemistry and Biology Engineering, Sanming University, Sanming 365004, Fujian Province, P. R. China |
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| 基金项目： | 国家自然科学基金，国家高技术研究发展计划(863)项目 |
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| 摘 要： | 在硼氢化钠和柠檬酸三钠共存的体系中还原硝酸银, 以聚乙烯吡咯烷酮(PVP)为表面活性剂和保护剂, 水浴加热制备得到三角形银纳米片, 用X射线衍射(XRD)、透射电子显微镜(TEM)、紫外-可见(UV-Vis)吸收光谱、表面增强拉曼散射(SERS)光谱对其进行了表征. 结果表明: 三角形银纳米片产物为立方相金属银, 边长为(100±40) nm, 厚度为(10±5) nm; 产物表现出与球形银纳米粒子完全不同的吸收光谱; 柠檬酸根在银晶核不同晶面的选择吸附、PVP的包覆作用及Ag(111)晶面的层错对产物的形成起决定作用; 与球形纳米颗粒相比, 三角形银纳米片膜对吡啶(Py)分子有显著的SERS活性.
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| 关 键 词： | 双还原法 三角形银纳米片 生长机理 表面等离子共振 表面增强拉曼散射光谱 |
| 收稿时间： | 2009-08-30 |
| 修稿时间： | 2009-12-07 |
Preparation and Optical Properties of Triangular Silver Nanoplates by a Dual-Reduction Method |
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| LAI Wen-Zhong, ZHAO Wei YANG Rong LI Xing-Guo.Preparation and Optical Properties of Triangular Silver Nanoplates by a Dual-Reduction Method[J].Acta Physico-Chimica Sinica,2010,26(4):1177-1183. |
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| Authors: | LAI Wen-Zhong ZHAO Wei YANG Rong LI Xing-Guo |
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| Institution: | Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China; Department of Chemistry and Biology Engineering, Sanming University, Sanming 365004, Fujian Province, P. R. China |
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| Abstract: | Triangular silver nanoplates were successfully prepared by a water-bath heating method.NaBH4 and sodium citrate were both used as reducing agents while polyvinylpyrrolidone (PVP) was used as a surfactant and protective agent.The product was characterized by X-ray diffraction (XRD),transmission electron microscopy (TEM),UV-Vis absorption spectroscopy,and surface-enhanced Raman scattering (SERS) spectrum.The product has a cubic face-centered Ag structure.The triangular silver nanoplates have a border size of ... |
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| Keywords: | Dual-reduction method Triangular silver nanoplates Growth mechanism Surface plasmon resonance Surface-enhanced Raman scattering spectrum |
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