On the surface chemistry and the reuse of sulfur-doped TiO2 films as photocatalysts
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2021
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Materials Chemistry and Physics
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The surface chemistry and recyclability of sulfur-doped titanium dioxide (TiO2) films was evaluated. The photocatalysts
were grown by metalorganic chemical vapor deposition (MOCVD) at 400 ◦C. The films were sulfur-doped
at 50 ◦C by using hydrogen sulfide (H2S) as sulfur source. The photocatalytic behavior of the films was
measure by monitoring the methyl orange dye decolorization under visible light for several cycles. The films are
formed only for the anatase crystalline phase. The results demonstrated that no structural modifications or
significant differences in the morphology of the films occurred after their use. The sulfur-doped TiO2 films
presented good photocatalytic activity, with an efficiency of 72.1% under visible light in its first use. The
durability experiments suggest that even with the dye impregnation on the catalyst surface, the photocatalytic
activity of the S-doped TiO2 films remained around 70% in the first 3 cycles, which allows their practical
application for water treatment and purification under sunlight.
Como referenciar
BENTO, RODRIGO T.; CORREA, OLANDIR V.; PILLIS, MARINA F. On the surface chemistry and the reuse of sulfur-doped TiO2 films as photocatalysts. Materials Chemistry and Physics, v. 261, p. 1-7, 2021. DOI: 10.1016/j.matchemphys.2021.124231. Disponível em: http://repositorio.ipen.br/handle/123456789/31966. Acesso em: 19 Apr 2024.
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.