Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

Vanadium-doped TiO 2 anatase nanostructures: the role of V in solid solution formation and its effect on the optical properties

Vanadium-doped TiO 2 anatase nanostructures: the role of V in solid solution formation and its... A facile and environmentally friendly synthesis approach for the production of vanadium doped titanium dioxide (V x Ti 1− x O 2 ) nanostructures was demonstrated via hydrothermal decomposition of vanadium and titanium peroxo-complexes. The effect of vanadium addition on the structural and morphological properties of V x Ti 1− x O 2 nanocrystals was investigated by X-ray diffraction (XRD) and electron microscopy techniques. XRD analysis showed that all V x Ti 1− x O 2 samples presented only the TiO 2 anatase crystalline phase and, despite the different amounts of vanadium ions, the single crystalline nature was preserved. Increasing V contents resulted in morphological evolution, from anisotropic to isotropic structures. X-ray absorption spectroscopy (XAS) and electron energy loss spectroscopy (EELS) have been employed for investigating the atomic composition and configuration of these nanostructures. XAS measurements at the K-edges (for V and Ti) revealed that V ions occupy the Ti 4+ -site, which confirms the doping effect. Furthermore, high-angle annular dark-field (HAADF) imaging, combined with EELS mapping, indicated that the vanadium ions were homogeneously distributed in the structure without any kind of segregation. These morphological and compositional modifications upon vanadium addition led to evolution of the TiO 2 optical properties. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png CrystEngComm Royal Society of Chemistry

Vanadium-doped TiO 2 anatase nanostructures: the role of V in solid solution formation and its effect on the optical properties

Loading next page...
 
/lp/royal-society-of-chemistry/vanadium-doped-tio-2-anatase-nanostructures-the-role-of-v-in-solid-fb9EK8JFOa

References (61)

Publisher
Royal Society of Chemistry
Copyright
This journal is © the Partner Organisations 2014
ISSN
1466-8033
eISSN
1466-8033
DOI
10.1039/c3ce42356e
Publisher site
See Article on Publisher Site

Abstract

A facile and environmentally friendly synthesis approach for the production of vanadium doped titanium dioxide (V x Ti 1− x O 2 ) nanostructures was demonstrated via hydrothermal decomposition of vanadium and titanium peroxo-complexes. The effect of vanadium addition on the structural and morphological properties of V x Ti 1− x O 2 nanocrystals was investigated by X-ray diffraction (XRD) and electron microscopy techniques. XRD analysis showed that all V x Ti 1− x O 2 samples presented only the TiO 2 anatase crystalline phase and, despite the different amounts of vanadium ions, the single crystalline nature was preserved. Increasing V contents resulted in morphological evolution, from anisotropic to isotropic structures. X-ray absorption spectroscopy (XAS) and electron energy loss spectroscopy (EELS) have been employed for investigating the atomic composition and configuration of these nanostructures. XAS measurements at the K-edges (for V and Ti) revealed that V ions occupy the Ti 4+ -site, which confirms the doping effect. Furthermore, high-angle annular dark-field (HAADF) imaging, combined with EELS mapping, indicated that the vanadium ions were homogeneously distributed in the structure without any kind of segregation. These morphological and compositional modifications upon vanadium addition led to evolution of the TiO 2 optical properties.

Journal

CrystEngCommRoyal Society of Chemistry

Published: Mar 3, 2014

There are no references for this article.