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http://dx.doi.org/10.4150/KPMI.2016.23.6.442

Effect of Reaction Parameters on Silica Nanoparticles Synthesized by Sol-gel Method  

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)
Publication Information
Journal of Powder Materials / v.23, no.6, 2016 , pp. 442-446 More about this Journal
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.
Keywords
Sol-gel method; Silica; Nanoparticles; Monodisperse; Particle size distribution;
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