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Structural study of lithium titanium mixed oxides prepared by sol-gel process

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Abstract

A structural study, using TGA-DSC analysis, X-ray diffraction, Raman scattering and FT Infrared absorption, is performed on mixed titanium lithium oxide with 20% of lithium prepared by sol-gel process. The structure is investigated as a function of the annealing temperature. At low temperatures the sample is in the anatase phase and transforms to the rutile phase near 500°C. The crystallite size of rutile TiO2 increases from 40 to 100 nm as the temperature increases. However the size increase presents some discontinuity at temperature around 600°C. At thermal treatment temperatures from 500°C to 850°C the presence of LiTi2O4 in the sample is clearly observed. Finally at 1000°C the sample is composed by a mixture of rutile TiO2 and Li2Ti3O7.

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Authors and Affiliations

  1. Departamento de Física, Universidad Autónoma Metropolitana Iztapalapa, Apdo. Postal 55-534, México DF, 09340, México

    M. Picquart

  2. Departamento de Física, Instituto Nacional de Investigaciones Nucleares, Apdo. Postal 18-1027, México DF, 11801, México

    L. Escobar-Alarcón

  3. Insituto de Materiales y Reactivos para la Electrónica (IMRE), Facultad de Química, Universidad de la Habana, San Lazaro y Vedado, La Habana, 10400, Cuba

    E. Torres

  4. Departamento de Química, Universidad Autónoma Metropolitana Iztapalapa, Apdo. Postal 55-534, México DF, 09340, México

    T. Lopez

  5. Departamento de Física, Universidad Autónoma Metropolitana Iztapalapa, Apdo. Postal 55-534, México DF, 09340, México

    E. Haro-Poniatowski

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  1. M. Picquart
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  2. L. Escobar-Alarcón
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  3. E. Torres
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  5. E. Haro-Poniatowski
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Correspondence to E. Haro-Poniatowski.

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Picquart, M., Escobar-Alarcón, L., Torres, E. et al. Structural study of lithium titanium mixed oxides prepared by sol-gel process. Journal of Materials Science 37, 3241–3249 (2002). https://doi.org/10.1023/A:1016126832567

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