NDLI: Influence of Fe and Al doping on the stabilization of the anatase phase in TiO<sub>2</sub> nanoparticles

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Influence of Fe and Al doping on the stabilization of the anatase phase in TiO₂ nanoparticles

Content Provider	Royal Society of Chemistry (RSC)
Author	Alemán, Belén Maestre, David González-Calbet, José M. Peche-Herrero, M. Andrea Vásquez, G. Cristian Piqueras, Javier Ramírez-Castellanos, Julio Cremades, Ana
Copyright Year	2014
Abstract	Anatase TiO2 nanoparticles doped with Al or Fe have been synthesized via a modified Pechini method which allows us to reach high control in size and composition. Microstructural analysis confirms the good crystallinity of the doped anatase nanoparticles with average sizes around 5 nm and dopant cationic concentrations up to 30%. The anatase to rutile transition (ART) has been thermally driven and analyzed as a function of the doping. Thermo-diffraction measurements indicate that the phase transition can be either promoted or inhibited by Fe or Al doping, respectively. The influence of Al and Fe doping on the phase transition has been discussed by means of Raman spectroscopy, photoluminescence and X-ray photoelectron spectroscopy, with special attention paid to the role played by Ti3+ at the surface. The anatase phase has been stabilized up to temperatures above 900 °C by appropriate Al doping.
Starting Page	10377
Ending Page	10385
Page Count	9
File Format	HTM / HTML PDF
ISSN	20507526
Volume Number	2
Issue Number	48
Journal	Journal of Materials Chemistry C
DOI	10.1039/c4tc02099e
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Al Raman Anatase Dopant Rutile Phase transition Raman spectroscopy Photoluminescence X-ray photoelectron spectroscopy Photoemission spectroscopy
Content Type	Text
Resource Type	Article
Subject	Chemistry Materials Chemistry

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