The behavior of mixed-metal oxides: Physical and chemical properties of bulk Ce 1-xTb xO 2 and nanoparticles of Ce 1-xTb xO y

Xianqin Wang; Jonathan C. Hanson; Gang Liu; José A. Rodriguez; Ana Iglesias-Juez; Marcos Fernández-García

doi:10.1063/1.1781116

The behavior of mixed-metal oxides: Physical and chemical properties of bulk Ce _1-xTb _xO ₂ and nanoparticles of Ce _1-xTb _xO _y

Xianqin Wang, Jonathan C. Hanson, Gang Liu, José A. Rodriguez, Ana Iglesias-Juez, Marcos Fernández-García

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118 Scopus citations

Abstract

The investigation of the physical and chemical properties of bulk Ce _1-xTb _xO ₂ and Ce _1-xTb _xO _y nanoparticles was discussed. The synchrotron-based X-ray diffraction, Raman spectroscopy and first-principles density-functional (DF) calculations were used. A small tetragonal distortion after introducing terbium in ceria was observed by DF and Raman spectra. It was shown that the presence of Tb generates strain in the lattice through the variation of the ionic radii and creation of crystal imperfections and O vacancies. It was found that the strain increases with the content of Tb and affects the chemical reactivity of the Ce _1-xTb _xO _y nanoparticles.

Original language	English (US)
Pages (from-to)	5434-5444
Number of pages	11
Journal	Journal of Chemical Physics
Volume	121
Issue number	11
DOIs	https://doi.org/10.1063/1.1781116
State	Published - Sep 15 2004
Externally published	Yes

All Science Journal Classification (ASJC) codes

General Physics and Astronomy
Physical and Theoretical Chemistry

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abstract = "The investigation of the physical and chemical properties of bulk Ce 1-xTb xO 2 and Ce 1-xTb xO y nanoparticles was discussed. The synchrotron-based X-ray diffraction, Raman spectroscopy and first-principles density-functional (DF) calculations were used. A small tetragonal distortion after introducing terbium in ceria was observed by DF and Raman spectra. It was shown that the presence of Tb generates strain in the lattice through the variation of the ionic radii and creation of crystal imperfections and O vacancies. It was found that the strain increases with the content of Tb and affects the chemical reactivity of the Ce 1-xTb xO y nanoparticles.",

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AU - Wang, Xianqin

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AU - Liu, Gang

AU - Rodriguez, José A.

AU - Iglesias-Juez, Ana

AU - Fernández-García, Marcos

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AB - The investigation of the physical and chemical properties of bulk Ce 1-xTb xO 2 and Ce 1-xTb xO y nanoparticles was discussed. The synchrotron-based X-ray diffraction, Raman spectroscopy and first-principles density-functional (DF) calculations were used. A small tetragonal distortion after introducing terbium in ceria was observed by DF and Raman spectra. It was shown that the presence of Tb generates strain in the lattice through the variation of the ionic radii and creation of crystal imperfections and O vacancies. It was found that the strain increases with the content of Tb and affects the chemical reactivity of the Ce 1-xTb xO y nanoparticles.

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The behavior of mixed-metal oxides: Physical and chemical properties of bulk Ce _1-xTb _xO ₂ and nanoparticles of Ce _1-xTb _xO _y

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