The Effect of Al2O3 and Li2O on the Anatase to Rutile Phase Transformation

Abstract:

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The utilization of Al2O3 and Li2O as dopants that promote the anatase-to-rutile (A-R) phase transition in TiO2 nanoparticles during calcinations is studied. X-Ray Diffraction and SEM techniques were employed for the evaluation of phase transformation and particle size coarsening in pure TiO2, TiO2-Al2O3 and TiO2-Li2O mixtures. For the Li-Ti-O pseudobinary systems some complex oxides may be formed during phase transformation that occurs at significantly lower temperatures compared to pure TiO2 or TiO2-Al2O3 mixtures. Al2O3 doping in TiO2 only increases the anatase-to-rutile transition rate once the phase transformation has been initiated.

Info:

Periodical:

Defect and Diffusion Forum (Volumes 297-301)

Edited by:

Andreas Öchsner, Graeme E. Murch, Ali Shokuhfar and João M.P.Q. Delgado

Pages:

918-923

DOI:

10.4028/www.scientific.net/DDF.297-301.918

Citation:

M.D. Athanassopoulou et al., "The Effect of Al2O3 and Li2O on the Anatase to Rutile Phase Transformation", Defect and Diffusion Forum, Vols. 297-301, pp. 918-923, 2010

Online since:

April 2010

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$35.00

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