Journal of Powder Materials (한국분말재료학회지)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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Effect of Reaction Parameters on Silica Nanoparticles Synthesized by Sol-gel Method

졸-겔법에 의한 단분산 실리카 나노입자 합성에 미치는 반응변수의 영향

  • Lim, Young-Hyun (Department of Material Engineering, Pusan National University) ;
  • Kim, Do Kyung (Department of Medical Science, Konyang University) ;
  • Jeong, Young-Keun (Graduate School of Convergence Science, Pusan National University)
  • Received : 2016.11.22
  • Accepted : 2016.12.03
  • Published : 2016.12.28
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Abstract

The sol-gel method is the simplest method for synthesizing monodispersed silica particles. The purpose of this study is to synthesize uniform, monodisperse spherical silica nanoparticles using tetraethylorthosilicate (TEOS) as the silica precursor, ethanol, and deionized water in the presence of ammonia as a catalyst. The reaction time and temperature and the concentration of the reactants are controlled to investigate the effect of the reaction parameters on the size of the synthesized particles. The size and morphology of the obtained silica particles are investigated using transmission electron microscopy and particle size analysis. The results show that monodispersed silica particles over a size range of 54-504 nm are successfully synthesized by the sol-gel method without using any additional process. The nanosized silica particles can be synthesized at higher TEOS/$H_2O$ ratios, lower ammonia concentrations, and especially, higher reaction temperatures.

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