Journal of Northeastern University Natural Science ›› 2015, Vol. 36 ›› Issue (3): 378-382.DOI: 10.12068/j.issn.1005-3026.2015.03.017

• Materials & Metallurgy • Previous Articles     Next Articles

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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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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