Ag-SiO2纳米复合颗粒的脉冲激光控制合成

doi:10.12068/j.issn.1005-3026.2015.03.017

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

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

(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

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
About author:-
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摘要/Abstract

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 SiO₂composited 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

中图分类号:

TG146.3

陈岁元，梁京， WELLBURN Dan，刘常升. Ag-SiO₂纳米复合颗粒的脉冲激光控制合成[J]. 东北大学学报:自然科学版, 2015, 36(3): 378-382.

CHEN Sui-yuan， LIANG Jing， WELLBURN Dan， LIU Chang-sheng. Pulsed Laser Control Synthesis of Ag-SiO₂ Nano-composite Particles[J]. Journal of Northeastern University Natural Science, 2015, 36(3): 378-382.

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Ag-SiO₂纳米复合颗粒的脉冲激光控制合成

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

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