Characterization of Pr-CeO2 nanocrystallites prepared by low-temperature combustion & hydrothermal synthesis

被引：0
|
作者：
Zhu Zhen-Feng [1 ]
Wang Bao-Li [1 ]
Ma Jian-Zhong [1 ]
机构：
[1] Shaanxi Univ Sci & Technol, Sch Mat Sci & Engn, Xianyang 712081, Peoples R China
来源：
CHINESE JOURNAL OF STRUCTURAL CHEMISTRY | 2006年 / 25卷 / 10期
关键词：
low-temperature combustion; hydrothermal treatment; Pr-CeO2; pigments; nano-crystalline;
D O I：
暂无
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Pr-CeO2 Nano-crystalline red pigments were prepared by low-temperature combustion kwith a later hydrothermal treatment using Ce(NO3)(3)center dot 6H2O and Pr6O11 as raw materials. The phase composition, coloring mechanism and morphology of pigments were analyzed by XRD, SEM, EDS and XPS. Results showed that Pr-CeO2 solid solution with a fluorite structure was obtained by the diffusion of Pr+3 into CeO2, crystal lattice during the synthesis process. XPS analysis indicated that Pr+3 substitutes Ce+4 in CeO2 and is compensated by oxygen vacancies. Compared with low-temperature combustion synthesis, the Pr-CeO2, pigments prepared with a subsequent hydrothermal treatment have an average grain size of about 16.70 nm, and the crystallinity and red tonality are improved.
引用
收藏
页码：1270 / 1274
页数：5
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