Synthesis and Characterization of Alumina-Ceria Core-Shell Nanoparticles Using a Wet Chemical Method

Abstract:

In this study, α-Al₂O₃-CeO₂ core-shell nanoparticles were synthesized from the cerium acetate and the commercial α-Al₂O₃ nanoparticles as the starting materials via a wet chemical method. Poly (acrylic acid) (PAA) as an additive compound was used for the surface modification of alumina nanoparticles. Also, the effects of PAA content, pH value and calcination temperature on the synthesis behavior of α-Al₂O₃-CeO₂ nanoparticles were investigated. The formation of core-shell structure was investigated using X-ray diffraction (XRD) and field-emission scanning electron microscopy (FE-SEM) equipped with energy dispersive X-ray spectroscopy (EDS). The results indicated that at the PAA=1.5 wt. %, pH=6 and calcination temperature=1150°C (as optimal conditions), the core-shell nanoparticles with alumina core and ceria shell and homogeneous size distribution were synthesized successfully.

• Periodical: Materials Science Forum (Volume 904)
• Pages: 107-111
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.904.107
• Online since: August 2017
• Authors: Sajedeh Davar, Behrooz Movahedi, Ghasem Dini*, Mostafa Milani
• Keywords: Alumina, Calcination, Ceria, Core-Shell, Nanoparticles

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