Titanium dioxide thin films: a study of film morphology and structural changes upon photocatalytic degradation of methylene blue

TiO2 thin films were deposited by reactive DC-magnetron sputtering at different Ar/O2 ratios in the gas mixture. The photocatalytic activity (under UV light irradiation) of these films was evaluated upon degradation of aqueous solutions of methylene blue (MB), a model organic pollutant. Upon photoca...

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Bibliographic Details
Published in:Journal of physics. Conference series 2014-01, Vol.480 (1), p.12026-4
Main Authors: Naranjo, A, Zambrano, G, Torres, W, Gómez, M E
Format: Article
Language:English
Subjects:
Aqueous solutions
Atomic force microscopy
Catalytic activity
Degradation
Gas mixtures
Light irradiation
Magnetron sputtering
Methylene blue
Microscopy
Morphology
Photocatalysis
Photodegradation
Physics
Pollutants
Scanning electron microscopy
Thin films
Titanium dioxide
Ultraviolet radiation
X-rays
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Summary:TiO2 thin films were deposited by reactive DC-magnetron sputtering at different Ar/O2 ratios in the gas mixture. The photocatalytic activity (under UV light irradiation) of these films was evaluated upon degradation of aqueous solutions of methylene blue (MB), a model organic pollutant. Upon photocatalysis, the TiO2 films showed structural, morphological and compositional changes that were characterized by X-ray diffraction (XRD), Atomic Force Microscopy (AFM), Scanning Electron Microscopy (SEM) and energy dispersive X-ray (EDX).
ISSN:1742-6596
1742-6588
1742-6596
DOI:10.1088/1742-6596/480/1/012026