RT Journal Article
T1 Influence of Fe and Al doping in the stabilization ofthe anatase phase in TiO_2 nanoparticles
A1 Vásquez, G. Cristian
A1 Peche-Herrero, Andrea
A1 Maestre Varea, David
A1 Alemán Llorente, Belén
A1 Ramirez-Castellanos, Julio
A1 Cremades Rodríguez, Ana Isabel
A1 Gonzalez-Calbet, José M.
A1 Piqueras De Noriega, Francisco Javier
AB Anatase TiO_2 nanoparticles doped with Al or Fe have been synthesized via a modified Pechini method which allows to reach high control in size and composition. Microstructural analysis  onfirms the good crystallinity of the doped anatase nanoparticles with average sizes around 5 nm and dopant cationic concentrations up to 30 %. 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 in 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 Ti^(3+) at the surface. Anatase phase has been stabilized up to temperatures above 900 ºC by appropriate Al doping
PB Royal Soc. Chemistry
SN 2050-7526
YR 2014
FD 2014
LK https://hdl.handle.net/20.500.14352/34883
UL https://hdl.handle.net/20.500.14352/34883
LA eng
NO © The Royal Society of Chemistry 2012.This work was supported by MINECO (Projects MAT2011-23068, MAT 2012-31959 and Consolider Ingenio CSD 2009-00013). Authors are grateful to National Centre for Electron Microscopy (CNME) at Universidad Complutense de Madrid.
NO Ministerio de Economía y Competitividad (MINECO)
DS Docta Complutense
RD 21 abr 2025