Synthesis of In2O3@SiO2 Core–Shell Nanoparticles with Enhanced Deeper Energy Level Emissions of In2O3
In2O3@ SiO2 core–shell nanoparticles were prepared using an organic solution synthesis
approach and reverse-microemulsion technique. In order to explore the availability of
various silica encapsulations, a partial phase diagram for this ternary system consisting of
hexane/cyclohexane (1: 29 wt), surfactant (polyoxyethylene (5) nonylphenyl ether, ie, Igepal
CO-520), and aqueous solution containing ammonium hydroxide was also established. It is
realized that the shell-thickness can be tuned by several parameters such as the …
approach and reverse-microemulsion technique. In order to explore the availability of
various silica encapsulations, a partial phase diagram for this ternary system consisting of
hexane/cyclohexane (1: 29 wt), surfactant (polyoxyethylene (5) nonylphenyl ether, ie, Igepal
CO-520), and aqueous solution containing ammonium hydroxide was also established. It is
realized that the shell-thickness can be tuned by several parameters such as the …
In2O3@SiO2 core–shell nanoparticles were prepared using an organic solution synthesis approach and reverse-microemulsion technique. In order to explore the availability of various silica encapsulations, a partial phase diagram for this ternary system consisting of hexane/cyclohexane (1:29 wt), surfactant (polyoxyethylene(5)nonylphenyl ether, i.e., Igepal CO-520), and aqueous solution containing ammonium hydroxide was also established. It is realized that the shell-thickness can be tuned by several parameters such as the concentration of In2O3 nanocrystal suspension and the dose of the Si-precursor, tetraethyl orthosilicate. It was observed that the deeper energy level emissions of In2O3 were apparently enhanced when In2O3 was confined by the silica-shell in such core–shell nanoparticles. However, this enhancement could be degraded by increasing the shell-thickness.
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