TY - JOUR
T1 - Synthesis and optical properties of SiO2-coated CeO2 nanoparticles
AU - Tago, Teruoki
AU - Tashiro, Shizuka
AU - Hashimoto, Yukiko
AU - Wakabayashi, Katsuhiko
AU - Kishida, Masahiro
N1 - Funding Information:
The authors would like to thank the Research Laboratory of High Voltage Electron Microscopy, Kyushu University, for the transmission electron micrograph. This work was partly supported by a Grant-in-Aid for Exploratory Research (No. 12555218) from the Ministry of Education, Culture, Sports, Science and Technology of Japan.
PY - 2003/4
Y1 - 2003/4
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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U2 - 10.1023/A:1024499516543
DO - 10.1023/A:1024499516543
M3 - Article
AN - SCOPUS:0037745564
SN - 1388-0764
VL - 5
SP - 55
EP - 60
JO - Journal of Nanoparticle Research
JF - Journal of Nanoparticle Research
IS - 1-2
ER -