Journal article
D. G. Calatayud, T. Jardiel, M. Peiteado, F. Illas, E. Giamello, F. Palomares, D. Fernández-Hevia, A. Caballero
2015
2015
Semantic Scholar
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APA
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Calatayud, D. G., Jardiel, T., Peiteado, M., Illas, F., Giamello, E., Palomares, F., … Caballero, A. (2015). Synthesis and Characterization of Blue Faceted Anatase Nanoparticles through Extensive Fluorine Lattice Doping.
Chicago/Turabian
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Calatayud, D. G., T. Jardiel, M. Peiteado, F. Illas, E. Giamello, F. Palomares, D. Fernández-Hevia, and A. Caballero. “Synthesis and Characterization of Blue Faceted Anatase Nanoparticles through Extensive Fluorine Lattice Doping” (2015).
MLA
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Calatayud, D. G., et al. Synthesis and Characterization of Blue Faceted Anatase Nanoparticles through Extensive Fluorine Lattice Doping. 2015.
BibTeX Click to copy
@article{d2015a,
title = {Synthesis and Characterization of Blue Faceted Anatase Nanoparticles through Extensive Fluorine Lattice Doping},
year = {2015},
author = {Calatayud, D. G. and Jardiel, T. and Peiteado, M. and Illas, F. and Giamello, E. and Palomares, F. and Fernández-Hevia, D. and Caballero, A.}
}
Abstract
An effective synthesis strategy for the extensive fluorination of the TiO2 anatase lattice has been developed which provides a highly stable blue-colored titania powder. The process also produces a convenient faceted morphology of the doped nanoparticles. Both theoretical and experimental data indicate an ordered atomic structure, in which an exceptionally high amount of fluorine ions substitute oxygen ions in the TiO2 lattice. The extra-electrons borne by fluorine are stabilized by lattice Ti cations via a mechanism of valence induction, eventually leading to a consequent high amount of reduced Ti3+ centers. Such structure, whose general formula can be expressed as Ti4+(1-x)Ti3+xO2–(2-x)F–x, confers an excellent stability to the as-synthesized nanoparticles (in spite of the excess electrons), explaining for example why the blue color is retained even upon storage in ambient atmosphere. But moreover, the high concentration of the relatively shallow Ti3+ generated states also form a sort of sub-band close ...
