Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Synthesis and Characterization of Yttrium-doped Core-Shell SiO2 Nanoparticles by Reverse Micelle and Sol-gel Processing

  • Kim, Jun-Seop (School of Nano & Advanced Material Engineering, College of Engineering, Changwon National University) ;
  • Chu, Min-Cheol (Korea Research Institute of Standard and Science) ;
  • Cho, Seong-Jai (Korea Research Institute of Standard and Science) ;
  • Bae, Dong-Sik (School of Nano & Advanced Material Engineering, College of Engineering, Changwon National University)
  • Published : 2008.09.30
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Abstract

In this study, yttrium-doped $SiO_2$ nanoparticles are synthesized using a reverse micelle technique combined with metal alkoxide hydrolysis and condensation. Spherical Y-doped $SiO_2$ nanoparticles with a uniform size distribution are prepared using selfassembly molecules in conjunction with the hydrolysis and condensation of organometallic precursors. The water/surfactant molar ratio influenced the Y-doped $SiO_2$ particles distribution of the core-shell composite particles and the distribution of Y doped $SiO_2$ particles was broadened as the water to surfactant ratio increased. The particle size of Y increase linearly as the $Y(NO_3)_3$ solution concentration increased. The average size of the cluster was found to depend on the micelle size, the nature of the solvent, and the concentration of the reagent. The effects of synthesis parameters, such as the molar ratio of water to surfactant and the molar ratio of water to TEOS, are discussed.

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References

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