Novel SrTi1−xFexO3 nanocubes synthesized by microwave-assisted hydrothermal method
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Altres documents de l'autoria: Da Silva, Luis F.; Avansi, Waldir; Moreira, Mario Lucio; Andres, Juan; Longo, Elson; Mastelaro, Valmor Roberto
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Mostra el registre complet de l'elementcomunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/7013
comunitat-uji-handle3:10234/8638
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http://dx.doi.org/10.1039/C2CE25229E |
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Títol
Novel SrTi1−xFexO3 nanocubes synthesized by microwave-assisted hydrothermal methodAutoria
Data de publicació
2012-03Editor
Royal Society of ChemistryTipus de document
info:eu-repo/semantics/articleVersió de l'editorial
http://pubs.rsc.org/en/content/articlelanding/2012/ce/c2ce25229eVersió
info:eu-repo/semantics/publishedVersionResum
We report herein for the first time a facile synthesis method to obtain SrTi1−xFexO3 nanocubes by means by a microwave-assisted hydrothermal (MAH) method at 140 °C. The effect of iron addition on the structural and ... [+]
We report herein for the first time a facile synthesis method to obtain SrTi1−xFexO3 nanocubes by means by a microwave-assisted hydrothermal (MAH) method at 140 °C. The effect of iron addition on the structural and morphological properties of SrTiO3 was investigated. X-ray diffraction measurements show that all STFO samples present a cubic perovskite structure. X-ray absorption spectroscopy at Fe absorption K-edge measurements revealed that iron ions are in a mixed Fe2+/Fe3+ oxidation state and preferentially occupy the Ti4+-site. UV-visible spectra reveal a reduction in the optical gap (Egap) of STFO samples as the amount of iron is increased. An analysis of the data obtained by field emission scanning electron microscopy points out that the nanoparticles present a cubic morphology independently of iron content. According to high-resolution transmission electron microscopy results, these nanocubes are formed by a self-assembly process of small primary nanocrystals. [-]
Publicat a
CrystEngComm, 2012, 14Drets d'accés
© Royal Society of Chemistry 2012
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