Obtenção de filmes finos de TiO2 nanoestruturado pelo método dos precursores poliméricos
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Graduate program
Undergraduate course
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Publisher
Sociedade Brasileira de Química
Type
Article
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Acesso aberto
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Abstract
This work focuses in optimizing setup for obtaining TiO2 thin films by polymeric precursor route due to its advantages on stoichiometric and morphological control. Precursor stoichiometry, synthesis pH, solids concentration and rotation speed at deposition were optimized evaluating thin films morphology and thickness. Thermogravimetry and RMN were applied for precursor's characterization and AFM, XRD and ellipsometry for thin films evaluation. Results showed successful attainment of homogeneous nanocrystalline anatase TiO2 thin films with outstanding control over morphological characteristics, mean grain size of 17 nm, packing densities between 57 and 75%, estimated surface areas of 90 m²/g and monolayers thickness within 20 and 128 nm.
Description
Keywords
titanium dioxide, thin films, polymeric precursor
Language
Portuguese
Citation
Química Nova. Sociedade Brasileira de Química, v. 31, n. 7, p. 1706-1709, 2008.
