Publication: Preparation of CeO<inf>2</inf> nano rods through a sonication-assisted precipitation
Issued Date
2014-01-01
Resource Type
ISSN
17447402
1546542X
1546542X
Other identifier(s)
2-s2.0-84903690041
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Mahidol University
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SCOPUS
Bibliographic Citation
International Journal of Applied Ceramic Technology. Vol.11, No.4 (2014), 645-653
Suggested Citation
Pattaraporn Kim-Lohsoontorn, Veerinrada Tiyapongpattana, Nipat Asarasri, Panpailin Seeharaj, Navadol Laosiripojana Preparation of CeO<inf>2</inf> nano rods through a sonication-assisted precipitation. International Journal of Applied Ceramic Technology. Vol.11, No.4 (2014), 645-653. doi:10.1111/ijac.12264 Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/33556
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Title
Preparation of CeO<inf>2</inf> nano rods through a sonication-assisted precipitation
Abstract
A CeO2 nanopowder has been synthesized using sonication-assisted precipitation. The use of ultrasonics during precipitation showed potential morphology control during synthesis. The sonication-assisted precipitation with highly aqueous base (20 M NaOH) successfully induced the formation of a one-dimensional nanostructure of CeO2 rods with a homogeneous shape and size (TEM: 24 nm diameter and 129 nm long). A conventional precipitation under the same conditions provided the CeO2 in nonuniform sizes and shapes. Heat treatment (1100C for 4 h) was required for CeO2 formation when (NH4)2C2O4 was used instead of NaOH. The concentration of the precipitation agent (15-20 M) strongly affected the size and shape of the product. Importantly, according to the temperature-programmed reduction/oxidation study, the CeO2 prepared using the sonication-assisted route showed a relatively higher level of reversible oxygen storage capacity (2384 μmol/g), compared with the CeO 2 prepared by conventional route (1748 μmol/g). © 2014 The American Ceramic Society.