Abstract:The photocatalytic activity and stability of TiO 2 thin films deposited by reactive sputtering were evaluated through many cycles of aqueous methylene blue solutions photodegradation. Tests were performed in TiO 2 films deposited onto silica, silicon, and lanthanum aluminate substrates under UV light irradiation. The dye degradation was determined using the optical absorbance spectra at preestablished exposure times. After 16 cycles of reaction, 180 minutes each, no systematic losses in the photocatalytic acti… Show more
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