东北大学学报:自然科学版 ›› 2015, Vol. 36 ›› Issue (3): 378-382.DOI: 10.12068/j.issn.1005-3026.2015.03.017

• 材料与冶金 • 上一篇    下一篇

Ag-SiO2纳米复合颗粒的脉冲激光控制合成

陈岁元, 梁京, WELLBURN Dan, 刘常升   

  1. (东北大学 材料各向异性与织构教育部重点实验室, 辽宁 沈阳110819)
  • 收稿日期:2014-01-13 修回日期:2014-01-13 出版日期:2015-03-15 发布日期:2014-11-07
  • 通讯作者: 陈岁元
  • 作者简介:陈岁元(1964-),男,甘肃天水人,东北大学教授, 博士生导师; 刘常升(1963-),男,内蒙古奈曼旗人, 东北大学教授,博士生导师.
  • 基金资助:
    教育部留学回国人员科研启动基金资助项目(42-1); 中央高校基本科研业务费重大科技创新项目(N130810002).

Pulsed Laser Control Synthesis of Ag-SiO2 Nano-composite Particles

CHEN Sui-yuan, LIANG Jing, WELLBURN Dan, LIU Chang-sheng   

  1. Key Laboratory for Anisotropy and Texture of Materials, Ministry of Education, Northeastern University, Shenyang 110819, China.
  • Received:2014-01-13 Revised:2014-01-13 Online:2015-03-15 Published:2014-11-07
  • Contact: CHEN Sui-yuan
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摘要: 分别以质量分数为0%,3%,20%微米尺寸的SiO2粉末与微米尺寸的Ag粉末形成混合靶材,利用脉冲激光气相蒸发-液相收集控制合成Ag及Ag-SiO2纳米复合颗粒.采用透射电镜、X光衍射、红外光谱等分析技术,对制备样品的形貌、组织结构及其合成机理等进行了研究.结果表明,制备的Ag-SiO2纳米复合颗粒外观呈球形,主要粒径在15~25nm范围,Ag-SiO2纳米复合颗粒具有比单相Ag颗粒更好的分散性;Ag-SiO2纳米复合颗粒呈混合复合结构,随着SiO2含量的增加纳米复合颗粒的光谱吸收峰出现了蓝移现象,SiO2复合具有调节纳米Ag颗粒光学性能的功能;液相中的乙二醇起到了原位分散纳米复合颗粒的作用.

关键词: 脉冲激光, Ag-SiO2纳米复合颗粒, 控制合成, 蓝移, 原位分散

Abstract: Ag-SiO2 nano-composite particles were synthesized by pulsed laser gas phase evaporation control and liquid phase collection, and the mixture targets were composed of 0% , 3% , and 20% content micron-sized Ag powders and micron-sized SiO2 powders. The morphology, structure and synthesis mechanism of the samples were studied by means of TEM, XRD, infrared spectroscopy and other techniques. The results indicated that the Ag-SiO2 nano-composite particles prepared with this method are spherical. The diameters of the primary particles are from 15nm to 25nm. By comparison, Ag-SiO2 nano-composite particles are better than Ag nanoparticle in dispersion. Ag-SiO2 nano-composite particles have mixed composite structure. The spectral absorption peaks of Ag-SiO2 nano-composite particles show blue shift with the increase of SiO2 content, which proves that optical properties of Ag nanoparticles are adjusted by SiO2 composited in Ag. The ethylene glycol in the liquid phase is adsorbed on the surface of nano-composite particles which plays a role insitu dispersing nano-composite particles.

Key words: pulsed laser, Ag-SiO2 nano-composite particles, control synthesis, blue shift, in situ dispersing

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