Particle and Aerosol Research
Vol. 12, No. 2, June 2016, Pages 37-42
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ISSN : 1738-8716 (Print)
ISSN : 2287-8130 (Online)
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Preparation of CeO2 Nanoparticles using Flame Spray Pyrolysis
Sun Kyung Kim1), Su-Ryeon Park1),2), Hankwon Chang1),2), and Hee Dong Jang1),2),*
1)Rare Metals Research Center, Korea Institute of Geoscience and Mineral Resources
2)Department of Nanomaterials Science and Engineering, University of Science & Technology,
*Corresponding author.
Tel.: +82-42-868-3612, E-mail: hdjang@kigam.re.kr
Received 22 April 2016, Revised 20 June 2016, Accepted 24 June 2016, Available online 05 July 2016
http://dx.doi.org/10.11629/jpaar.2016.7.1.037
Abstracts
CeO2 nanoparticles were prepared by a flame spray pyrolysis from aqueous solution of cerium nitrate. The morphology, structure crystallinity and specific surface area of as-prepared nanoparticles were characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD), and Brunauer-Emmett-Telle (BET). The CeO2 nanoparticles about 5 nm in diameter showed a cubic fluorite structure and polyhedral morphology. The average particle size increased as the cerium nitrate concentration increased. UV absorption performance of the as-prepared nanoparticles was measured by UV-visible spectroscopy. UV absorption of CeO2 nanoparticles was more effective than that of commercial TiO2 nanoparticles. Effect of dopants such as Ti and Zn to CeO2 nanoparticles on UV absorption properties was also investigated. In case of Ti/CeO2, and Zn/CeO2 nanoparticles, they showed a little higher UV absorption values compared with CeO2 nanoparticles. The as-prepared nanoparticles can be promising materials with high UV absorption value.
Keywords
flame spray pyrolysis, CeO2 nanoparticles, ultraviolet absorption
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