Repozytorium publikacji - Politechnika Gdańska

Highly photoactive I/TiO2, Pt/I-TiO2 nanocomposites were obtained using a hydrothermal and wet impregnation method. The incorporation of iodine and modification with 0.05 mol% of platinum leads to enhanced photocatalytic activity as compared to singly doped TiO2 due to the presence of impurity energy level in the structure of TiO2. X-ray diffraction, TEM microscopy, UV–Vis spectroscopy, X-ray photoelectron spectroscopy and BET methods showed that the most active photocatalyst had anatase structure, 187 m2/g specific surface area, absorbed UV–Vis light and contained 3 nm platinum particles. XPS analysis revealed that iodine exists in the form of I¯ and IO3¯ species and platinum was present as Pt and PtO2. The photocatalytic activity of Pt/I-TiO2 nanocomposite was maintained after 4 runs, suggesting stability and reusability of the obtained photocatalyst. The efficiency of degradation of model organic compound was measured in a slurry type photoreactor as well as in a fixed-bed photoreactor equipped with parabolic mirror with Pt/I-TiO2 immobilized on glass beads or glass Raschig rings.

Autorzy

• prof. dr hab. inż. Anna Zielińska-Jurek link otwiera się w nowej karcie ,
• Maciej Klein link otwiera się w nowej karcie ,
• prof. dr hab. inż. Jan Hupka link otwiera się w nowej karcie