Journal
MATERIALS CHEMISTRY AND PHYSICS
Volume 261, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.matchemphys.2021.124231
Keywords
Titanium dioxide; Sulfur-doped TiO2; MOCVD; Recyclability; Surface analysis
Categories
Funding
- CAPES
- CNPq [168935/2018-0]
- FAPESP [05/55861-4]
Ask authors/readers for more resources
The study found that sulfur-doped titanium dioxide films exhibit good photocatalytic activity under visible light, and can maintain over 70% activity even after several cycles of continuous use, making them suitable for practical applications in water treatment and purification under sunlight.
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 degrees C. The films were sulfurdoped at 50 degrees 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.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available