物理化学学报 >> 2009, Vol. 25 >> Issue (01): 169-172.doi: 10.3866/PKU.WHXB20090130

研究论文 上一篇    下一篇

帽状锡纳米粒子的制备及其表面等离子的共振特性

雷新宪; 肖桂娜; 满石清; 杨兴旺   

  1. 暨南大学物理系, 广州 510632; 暨南大学纳米化学研究所, 广州 510632
  • 收稿日期:2008-07-28 修回日期:2008-09-26 发布日期:2008-12-31
  • 通讯作者: 满石清 E-mail:tsqman@jnu.edu.cn

Synthesis and Surface Plasmonic Resonance of Stannum Nanocaps

LEI Xin-Xian; XIAO Gui-Na; MAN Shi-Qing; YANG Xing-Wang   

  1. Department of Physics, Jinan University, Guangzhou 510632; 2Institute of Nano-Chemistry, Jinan University, Guangzhou 510632
  • Received:2008-07-28 Revised:2008-09-26 Published:2008-12-31
  • Contact: MAN Shi-Qing E-mail:tsqman@jnu.edu.cn

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摘要： 采用真空热蒸发法在SiO2自组装单层膜上沉积金属锡, 制备了帽状锡纳米结构, 通过扫描电镜(SEM)、原子力显微镜(AFM)、X射线衍射(XRD)仪和Cary 5000紫外-可见-近红外(UV-Vis-NIR)分光光度计对其表面形貌、结构以及光谱特性进行了研究和表征. 结果表明, 制备的复合纳米粒子呈帽状, 表面等离子共振峰位具有明显的可调谐性, 随二氧化硅粒径的增大或锡帽层厚度的增加, 表面等离子共振吸收峰向长波方向移动.

关键词: 帽状锡纳米结构, 复合纳米粒子, 表面等离子共振

Abstract: Stannum nanocaps were prepared by evaporating Sn on self-assembled monolayer arrays of SiO2 nanoparticles. Surface morphologies, structure, and optical properties of composite nanoparticles were characterized and investigated using scanning electron microscopy (SEM), atomic force microscopy (AFM), X-ray diffraction (XRD) and UV-Vis-NIR spectrophotometer. The results show that the composite nanoparticles are cap-shaped and surface plasmonic resonance absorption peaks move to the near-infrared region as the SiO2 diameter increases and Sn cap thickness increases.

Key words: Stannum nanocaps, Composite nanoparticles, Surface plasmonic resonance