3 December 2009 Size characterization of anatase TiO2 nanoparticles using a crystal size distribution in the LO Raman mode
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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, 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); doi: 10.1117/12.850294; https://doi.org/10.1117/12.850294
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