Synthesis of nanocrystalline CeO 2 particles by different emulsion methods
Journal article
Authors/Editors
Strategic Research Themes
No matching items found.
Publication Details
Author list: Supakanapitak S., Boonamnuayvitaya V., Jarudilokkul S.
Publisher: Elsevier
Publication year: 2012
Journal: Materials Characterization (1044-5803)
Volume number: 67
Start page: 83
End page: 92
Number of pages: 10
ISSN: 1044-5803
Languages: English-Great Britain (EN-GB)
View in Web of Science | View on publisher site | View citing articles in Web of Science
Abstract
Cerium oxide nanoparticles were synthesized using three different methods of emulsion: (1) reversed micelle (RM); (2) emulsion liquid membrane (ELM); and (3) colloidal emulsion aphrons (CEAs). Ammonium cerium nitrate and polyoxyethylene-4-lauryl ether (PE4LE) were used as cerium and surfactant sources in this study. The powder was calcined at 500 ฐC to obtain CeO 2. The effect of the preparation procedure on the particle size, surface area, and the morphology of the prepared powders were investigated. The obtained powders are highly crystalline, and nearly spherical in shape. The average particle size and the specific surface area of the powders from the three methods were in the range of 4-10 nm and 5.32-145.73 m 2/g, respectively. The CeO 2 powders synthesized by the CEAs are the smallest average particle size, and the highest surface area. Finally, the CeO 2 prepared by the CEAs using different cerium sources and surfactant types were studied. It was found that the surface tensions of cerium solution and the type of surfactant affect the particle size of CeO 2. ฉ 2012 Elsevier Inc. All rights reserved.
Keywords
CeO 2, Colloidal emulsion aphrons, Emulsions liquid membrane, Reversed micelle
Contact Information