Titanium dioxide films for photocatalytic degradation of methyl orange dye
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Titanium Dioxide: material for a sustainable environment
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The aim of this work was to characterize and evaluate the influence of the thickness on
the photocatalytic efficiency of titanium dioxide thin films on the degradation of methyl
orange dye under UV light irradiation. The films of 280 and 468 nm thick were deposited
on borosilicate substrates at 400°C by the MOCVD technique using titanium isoproxide
IV as precursor. XRD analyses showed the formation of anatase-TiO2 phase. Crosssectional
FE-SEM images show that the films presented a dense columnar structure
and grown perpendicularly to the substrate surface. The photocatalytic activity of the
catalysts was studied using UV-vis spectrophotometry The TiO2 film with 468 nm of
thickness presented higher photocatalytic activity exhibiting 69% of dye degradation.
The increase of grain size and thickness of the films promoted an improvement of photocatalytic
efficiency.
Como referenciar
BENTO, RODRIGO T.; PILLIS, MARINA F. Titanium dioxide films for photocatalytic degradation of methyl orange dye. In: YANG, DONGFANG (ed.). Titanium Dioxide: material for a sustainable environment. London: IntechOpen, 2018. , cap. 11. p. 211-225. DOI: 10.5772/intechopen.75528. Disponível em: http://repositorio.ipen.br/handle/123456789/29718. Acesso em: 20 Mar 2026.
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.