XANES study on the valence transitions in cerium oxide nanoparticles

doi:10.1107/S0909049500016022

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	XANES study on the valence transitions in cerium oxide nanoparticles
	Zhang J(张静); Wu ZY(吴自玉); Liu T(刘涛); Hu TD(胡天斗); Wu ZH(吴忠华); Ju X(巨新); Zhang, J; Wu, ZY; Liu, T; Hu, TD; Wu, ZH; Ju, X
	2001
发表期刊	JOURNAL OF SYNCHROTRON RADIATION
卷号	8 期号:2 页码:531-532
通讯作者	Chinese Acad Sci, Inst High Energy Phys, Beijing Synchrotron Radiat Facil, Beijing 100039, Peoples R China
文章类型	Article; Proceedings Paper
摘要	The aim of this work is the determination of Ce environment and valence state in Cerium oxide nanoparticles prepared by the microemulsion method. X-ray absorption near-edge structure measurements at Ce L-3 edge were performed on the nanoparticles as a function of annealing temperature, ranging from 298K to 873K under air condition. The experimental results support the conclusion that Ce ion, in the investigated systems, is in trivalence state when the annealing temperature is below 473K. As the temperature increases up to 623K, the XANES spectrum shows the coexistence of Ce3+ and Ce4+ states. When the temperature is higher than 623K, the spectra become identical to that of CeO2 with a distinct double-peak structure, corresponding to the Ce4+ state.
关键词	cerium oxide nanoparticles valence transitions XANES
学科领域	Instruments & Instrumentation; Optics; Physics
DOI	10.1107/S0909049500016022
URL	查看原文
语种	英语
WOS研究方向	Instruments & Instrumentation ; Optics ; Physics
WOS类目	Instruments & Instrumentation ; Optics ; Physics, Applied
WOS记录号	WOS:000167298100146
引用统计	被引频次：30[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ihep.ac.cn/handle/311005/237846
专题	多学科研究中心
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Zhang J,Wu ZY,Liu T,et al. XANES study on the valence transitions in cerium oxide nanoparticles[J]. JOURNAL OF SYNCHROTRON RADIATION,2001,8(2):531-532.
APA	张静.,吴自玉.,刘涛.,胡天斗.,吴忠华.,...&Ju, X.(2001).XANES study on the valence transitions in cerium oxide nanoparticles.JOURNAL OF SYNCHROTRON RADIATION,8(2),531-532.
MLA	张静,et al."XANES study on the valence transitions in cerium oxide nanoparticles".JOURNAL OF SYNCHROTRON RADIATION 8.2(2001):531-532.

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