Preparation of Fe₃O₄/SiO₂ Core/Shell Nanoparticles with Ultrathin Silica Layer
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초록
We successfully synthesized $Fe_3O_4/SiO2 nanoparticles with ultrathin silica layer of $1.0{\pm}0.5$ nm that was fine controlled by changing concentration of Fe₃O₄. Among various reaction conditions for silica coating, increasing concentration of Fe₃O₄ was more effective approach to decrease silica thickness compared to water-to-surfactant ratio control. Moreover, we found that concentration of the 1-octanol is also important factor to produce the homogeneous $Fe_3O_4/SiO2 nanoparticles. The present approach could be available to apply on preparation of other core/shell nanoparticles with ultrathin silica layer.
Abstract
We successfully synthesized $Fe_3O_4/SiO2 nanoparticles with ultrathin silica layer of $1.0{\pm}0.5$ nm that was fine controlled by changing concentration of Fe₃O₄. Among various reaction conditions for silica coating, increasing concentration of Fe₃O₄ was more effective approach to decrease silica thickness compared to water-to-surfactant ratio control. Moreover, we found that concentration of the 1-octanol is also important factor to produce the homogeneous $Fe_3O_4/SiO2 nanoparticles. The present approach could be available to apply on preparation of other core/shell nanoparticles with ultrathin silica layer.
참고문헌 (29)
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