Size characterization of anatase TiO2 nanoparticles using a crystal size distribution in the LO Raman mode

Héctor Pérez Ladrón de Guevara; Jesús Castañeda Contreras; Carlos Israel Medel Ruíz; Christian Geovanny Briseña Macias

doi:10.1117/12.850294

3 December 2009 Size characterization of anatase TiO₂ nanoparticles using a crystal size distribution in the LO Raman mode

Héctor Pérez Ladrón de Guevara, Jesús Castañeda Contreras, Carlos Israel Medel Ruíz, Christian Geovanny Briseña Macias

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Proceedings Volume 7499, Seventh Symposium Optics in Industry; 74990X (2009) https://doi.org/10.1117/12.850294
Event: Seventh Symposium on Optics in Industry, 2009, Guadalajara, Jalisco, Mexico

Abstract

Optical applications of TiO₂ nanoparticles depend directly on their size and phase. The sol gel process is widely used to obtain TiO₂ nanoparticles. We obtained TiO₂ nanoparticles with different sizes by varying the water molar ratio during the sol-gel process. From the asymmetrical shape of the Raman spectrum it is possible to obtain the structural characteristics of the materials. Fitting a Space Correlation Model (SCM) in the LO mode is an alternative way to determinate the crystal size, plus by adding a Crystal Size Distribution (CSD) function in this model, average size fluctuations could be determinate. In this work we present the results obtained by applying the SCM with different phonon dispersion relations and a CSD function in Raman spectra of TiO₂ nanoparticles.

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Héctor Pérez Ladrón de Guevara, Jesús Castañeda Contreras, Carlos Israel Medel Ruíz, and Christian Geovanny Briseña Macias "Size characterization of anatase TiO₂ nanoparticles using a crystal size distribution in the LO Raman mode", Proc. SPIE 7499, Seventh Symposium Optics in Industry, 74990X (3 December 2009); https://doi.org/10.1117/12.850294

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