Effect of growth parameters on the photocatalytic performance of TiO2 films prepared by MOCVD
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2020
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Journal of the Brazilian Chemical Society
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The present study evaluated the main factors that influence the photocatalytic activity of
titanium dioxide (TiO2) films grown by metalorganic chemical vapor deposition (MOCVD) at 400
and 500 °C, in different growth times. The photocatalytic behavior was analyzed by measuring the
methyl orange dye degradation at different pH values. Structural and morphological characteristics,
and the recyclability of the catalysts for several cycles were also investigated. Anatase phase was
identified in all films. The higher photodegradation performances were obtained at acidic pH. The
results demonstrated that the photocatalyst thickness is an important parameter in heterogenous
photocatalysis. The best photocatalytic result occurred for the 395 nm-thick TiO2 film grown
at 400 °C, which presented 65.3% of the dye degradation under UV light. The recyclability
experiments demonstrated that the TiO2 films grown by MOCVD present a great stability after
several photocatalytic cycles, which allows their practical application for water treatment with
high efficiency.
Como referenciar
MARCELLO, BIANCA A.; CORREA, OLANDIR V.; BENTO, RODRIGO T.; PILLIS, MARINA F. Effect of growth parameters on the photocatalytic performance of TiO2 films prepared by MOCVD. Journal of the Brazilian Chemical Society, v. 31, n. 6, p. 1270-1283, 2020. DOI: 10.21577/0103-5053.20200012. Disponível em: http://repositorio.ipen.br/handle/123456789/31388. Acesso em: 12 Mar 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.