Influence of Mg-doped on the microstructure and oxygen storage capacity of Ce0.5Zr0.5O2

Yaling Yao; Dongmei Li; Tiansheng Xu; Tengfei Fu

doi:10.1117/12.888176

18 February 2011 Influence of Mg-doped on the Microstructure and Oxygen Storage Capacity of Ce_0.5Zr_0.5O₂

Yaling Yao, Dongmei Li, Tiansheng Xu, Tengfei Fu

Proceedings Volume 7995, Seventh International Conference on Thin Film Physics and Applications; 799513 (2011) https://doi.org/10.1117/12.888176
Event: Seventh International Conference on Thin Film Physics and Applications, 2010, Shanghai, China

Abstract

Mg-doped Ce_0.5Zr_0.5O₂ nanocrystalline powders were prepared via hydrothermal method through homogeneous nucleation at 453K followed by calcinations at 673K. The effect of Mg-doping concentrations on the structure and performances of Ce_0.5Zr_0.5O₂ was studied. The results showed that Mg-doped Ce_0.5Zr_0.5O₂ was a single fluorite-type phase and the size was about 4nm. The introduction Mg into the Ce_0.5Zr_0.5O₂ lattice limited the mobility of oxygen and made the specific surface area and oxygen storage capacity(OSC) declined at doping constant less than 4mol%; as more than 4mol%, a segregation of Mg was dispersed on surface of Ce_0.5Zr_0.5O₂ and improved the thermal stability of surface, thus enhanced the OSC performance.

Citation Download Citation

Yaling Yao, Dongmei Li, Tiansheng Xu, and Tengfei Fu "Influence of Mg-doped on the Microstructure and Oxygen Storage Capacity of Ce_0.5Zr_0.5O₂", Proc. SPIE 7995, Seventh International Conference on Thin Film Physics and Applications, 799513 (18 February 2011); https://doi.org/10.1117/12.888176

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