| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 26589 | Journal of Photochemistry and Photobiology A: Chemistry | 2015 | 8 Pages |
•TiO2 and CdO + CdTiO3 thin films were performed with different Ti/Cd ratios.•Benzene was degraded in gas phase under different conditions of relative humidity.•High photocatalytic efficiency was observed for the CdO + CdTiO3 films Ti/Cd = 0.65.•High efficiency can be due to the coupling of both CdO and CdTiO3 semiconductors.•Detrimental effect on the oxidation process at high relative humidity was observed.
In this work, TiO2 and CdO + CdTiO3 multicomponent oxide thin films growth was performed with different Ti/Cd ratios (0, 0.20, 0.49, 0.60, 0.65, 0.70 and 1) by the sol–gel route in order to degrade benzene in gas phase with an initial concentration level of 110 ± 10 ppm, under different conditions of relative humidity (RH): 25%, 50% and 80% in a batch type reactor, at room temperature. The results showed a degradation near to 100% at t = 75 min, using the CdO + CdTiO3 multicomponent oxide semiconductor with a Ti/Cd ratio of 0.65. On the other hand, the TiO2 thin films reached only a degradation of 70% in t = 240 min. A decrease of the oxidation process of benzene was observed in all films studied, as the relative humidity increased.
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