Obtenção de filmes finos de TiO2 nanoestruturado pelo método dos precursores poliméricos

Imagem de Miniatura

Data

2008-01-01

Autores

Stroppa, Daniel Grando
Giraldi, Tania Regina
Leite, Edson Roberto
Varela, José Arana [UNESP]
Longo, Elson [UNESP]

Título da Revista

ISSN da Revista

Título de Volume

Editor

Sociedade Brasileira de Química

Resumo

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.

Descrição

Palavras-chave

titanium dioxide, thin films, polymeric precursor

Como citar

Química Nova. Sociedade Brasileira de Química, v. 31, n. 7, p. 1706-1709, 2008.