Synthesis and optical properties of SiO2-coated CeO2 nanoparticles

Teruoki Tago; Shizuka Tashiro; Yukiko Hashimoto; Katsuhiko Wakabayashi; Masahiro Kishida

doi:10.1023/A:1024499516543

Synthesis and optical properties of SiO₂-coated CeO₂ nanoparticles

Teruoki Tago, Shizuka Tashiro, Yukiko Hashimoto, Katsuhiko Wakabayashi, Masahiro Kishida

Molecular and Biochemical Systems Engineering

Research output: Contribution to journal › Article

45 Citations (Scopus)

Abstract

Silica (SiO₂)-coated ceria (CeO₂) nanoparticles were prepared using water-in-oil microemulsion. Polyoxyethylene (15) cetylether and cyclohexane were used as a surfactant and organic solvent. SiO ₂-coated CeO₂ nanoparticles were obtained by hydrolysis of metal alkoxide (tetraethylorthosilicate, TEOS) in the solution containing CeO₂ precursor nanoparticles. The effects of CeO₂ sources (Ce metal salt) and CeO₂ particle-forming agents on the morphology of SiO₂-CeO₂ particles were investigated. Observation via transmission electron microscopy revealed that the type of particle-forming agent affected the nanoparticles' morphology and that CeO₂ nanoparticles were spherically coated with SiO₂ when using oxalic acid ((COOH)₂) as a particle-forming agent of CeO₂. Furthermore, the transmittance of the particles was high in the visible region (above 400 nm) and decreased in the ultraviolet region.

Original language	English
Pages (from-to)	55-60
Number of pages	6
Journal	Journal of Nanoparticle Research
Volume	5
Issue number	1-2
DOIs	https://doi.org/10.1023/A:1024499516543
Publication status	Published - Apr 1 2003

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All Science Journal Classification (ASJC) codes

Bioengineering
Chemistry(all)
Atomic and Molecular Physics, and Optics
Modelling and Simulation
Materials Science(all)
Condensed Matter Physics

Cite this

Tago, T., Tashiro, S., Hashimoto, Y., Wakabayashi, K., & Kishida, M. (2003). Synthesis and optical properties of SiO₂-coated CeO₂ nanoparticles. Journal of Nanoparticle Research, 5(1-2), 55-60. https://doi.org/10.1023/A:1024499516543

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abstract = "Silica (SiO2)-coated ceria (CeO2) nanoparticles were prepared using water-in-oil microemulsion. Polyoxyethylene (15) cetylether and cyclohexane were used as a surfactant and organic solvent. SiO 2-coated CeO2 nanoparticles were obtained by hydrolysis of metal alkoxide (tetraethylorthosilicate, TEOS) in the solution containing CeO2 precursor nanoparticles. The effects of CeO2 sources (Ce metal salt) and CeO2 particle-forming agents on the morphology of SiO2-CeO2 particles were investigated. Observation via transmission electron microscopy revealed that the type of particle-forming agent affected the nanoparticles' morphology and that CeO2 nanoparticles were spherically coated with SiO2 when using oxalic acid ((COOH)2) as a particle-forming agent of CeO2. Furthermore, the transmittance of the particles was high in the visible region (above 400 nm) and decreased in the ultraviolet region.",

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AU - Hashimoto, Yukiko

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AU - Kishida, Masahiro

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N2 - Silica (SiO2)-coated ceria (CeO2) nanoparticles were prepared using water-in-oil microemulsion. Polyoxyethylene (15) cetylether and cyclohexane were used as a surfactant and organic solvent. SiO 2-coated CeO2 nanoparticles were obtained by hydrolysis of metal alkoxide (tetraethylorthosilicate, TEOS) in the solution containing CeO2 precursor nanoparticles. The effects of CeO2 sources (Ce metal salt) and CeO2 particle-forming agents on the morphology of SiO2-CeO2 particles were investigated. Observation via transmission electron microscopy revealed that the type of particle-forming agent affected the nanoparticles' morphology and that CeO2 nanoparticles were spherically coated with SiO2 when using oxalic acid ((COOH)2) as a particle-forming agent of CeO2. Furthermore, the transmittance of the particles was high in the visible region (above 400 nm) and decreased in the ultraviolet region.

AB - Silica (SiO2)-coated ceria (CeO2) nanoparticles were prepared using water-in-oil microemulsion. Polyoxyethylene (15) cetylether and cyclohexane were used as a surfactant and organic solvent. SiO 2-coated CeO2 nanoparticles were obtained by hydrolysis of metal alkoxide (tetraethylorthosilicate, TEOS) in the solution containing CeO2 precursor nanoparticles. The effects of CeO2 sources (Ce metal salt) and CeO2 particle-forming agents on the morphology of SiO2-CeO2 particles were investigated. Observation via transmission electron microscopy revealed that the type of particle-forming agent affected the nanoparticles' morphology and that CeO2 nanoparticles were spherically coated with SiO2 when using oxalic acid ((COOH)2) as a particle-forming agent of CeO2. Furthermore, the transmittance of the particles was high in the visible region (above 400 nm) and decreased in the ultraviolet region.

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