Comparative Structural and Optical Properties of Different Ceria Nanoparticles

被引：2

作者：

Nikolic, A. S. ^{[1
]}

Boskovic, M. ^{[2
]}

Fabian, M. ^{[3
]}

Bozanic, D. K. ^{[2
]}

Vucinic-Vasic, M. ^{[2
]}

Kremenovic, A. ^{[2
,4
]}

Antic, B. ^{[2
]}

机构：

[1] Univ Belgrade, Fac Chem, Belgrade 11000, Serbia

[2] Univ Belgrade, Vinca Inst Nucl Sci, Belgrade 11001, Serbia

[3] Slovak Acad Sci, Inst Geotech, Kosice 04353, Slovakia

[4] Fac Min & Geol, Crystallog Lab, Belgrade 11000, Serbia

来源：

JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY | 2013年 / 13卷 / 10期

关键词：

Ceria; Nanoparticles; Synthesis; Structure; Microstructure; Spectroscopy; DOPED CERIA; OXIDE NANOPARTICLES; CEO2; NANOPARTICLES; DIFFRACTION;

D O I：

10.1166/jnn.2013.7774

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Herein a comparative study of five nanocrystalline cerium oxides (CeO2-delta) synthesised by different methods and calcined at 500 degrees C is reported. XRPD analysis showed that stoichiometry parameter delta, crystallite size/strain and lattice constant were only slightly affected by the method utilized. All ceria nanoparticles are nearly spherical in shape with faceted morphology, free of defects and with a relatively uniform size distribution. The average microstrain was found to be approximately 10 times higher than that of bulk counterpart. The absorption edge of nanocrystalline materials was shifted towards a higher wavelengths (red shift) in comparison with bulk counterpart, and band gap values were in the range 2.7-3.24 eV (3.33 eV for bulk counterpart).

引用

收藏

页码：6787 / 6792

页数：6

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