| 种子法制备三角形银纳米粒子及其性能表征 |
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| 引用本文： | 郭斌, 罗江山, 唐永建, 等. 种子法制备三角形银纳米粒子及其性能表征[J]. 强激光与粒子束, 2007, 19(08). |
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| 作者姓名： | 郭斌 罗江山 唐永建 程建平 |
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| 作者单位： | 1.清华大学 工程物理系, 北京 1 00084;;;2.中国工程物理研究院 激光聚变研究中心, 四川 绵阳 621 900 |
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| 摘 要： | 以十六烷基三甲基溴化胺(CTAB)为软模板剂，采用种子法制备出三角形银纳米粒子，应用透射电镜、能量散射X射线谱仪、紫外 可见分光光度计研究了粒子的性能。结果表明：所得三角形银纳米粒子是面心立方单晶，边长随着种子加入量的减少而递增，可在20～100 nm范围内调节；CTAB以薄膜形式包覆于粒子表面阻止其氧化，粒子胶体的吸收光谱呈现典型的三角形粒子吸收峰。用扫描电镜观测到粒子在硅片上自组装成一定的2维阵列结构。
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| 关 键 词： | 种子法 CTAB 三角形银纳米粒子 自组装 |
Preparation of triangular silver nanoplates by seed-mediated growth and their characterization |
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| guo bin, luo jiang-shan, tang yong-jian, et al. Preparation of triangular silver nanoplates by seed-mediated growth and their characterization[J]. High Power Laser and Particle Beams, 2007, 19. |
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| Authors: | guo bin luo jiang-shan tang yong-jian cheng jian-ping |
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| Affiliation: | 1. Department of Engineering Physics,Tsinghua University,Beijing 100084,China;;;2. Research Center of Laser Fusion,CAEP,P.O.Box 919-987,Mianyang 621900,China |
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| Abstract: | Triangular silver nanoplates have been prepared by seed-mediated growth with CTAB as soft template, and their morphologies, chemical components and optical absorption properties have been characterized by TEM, EDX and UV-Vis. The results indicate that the as-prepared nanoparticles are single-crystal Ag with face center cubic structure. The nanoplates have triangular shape and their average edge length increases from 20 nm to 100 nm by lowering the adding amount of Ag seed. CTAB exists as a thin film capping the Ag nanoparticles and prevents them from being oxidized. Three peaks appear in the absorption spectra of the Ag nanocolloid, and they can be ascribed to different modes of surface plasmon resonance of the nanoplates. The Ag nanoplates self assemble into two dimensional array when |
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| Keywords: | seed mediated growth ctab triangular nanoplates self-assembly |
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