RT journal article
T1 Facile fabrication of Fe-TiO2 thin film and its photocatalytic activity
A1 Aguinaco Martín, Almudena
A1 Amaya Dolores, Beatriz
A1 Ramírez del Solar, Milagrosa
A2 Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica
A2 Física de la Materia Condensada
K1 Nanoparticles
K1 Titanium oxide
K1 Fe-doping
K1 Thin film
K1 Solar photocatalysis
AB Fe3+-TiO2 (Fe-TiO2) thin films were successfully prepared using a "sandwich" approach. TiO2 NPs were doped with different Fe3+ content (0.05%, 0.1%, 0.2% molar ratio), and the modified TiO2 NPs were deposited on glass flat support by dip coating. Structural, morphological, optical, and photocatalytic properties of Fe-TiO2 thin films were studied. XPS spectra confirm the presence of Ti, Fe, O, and defective -OH groups at the material surface. The Fe 2p spectrum demonstrates the existence of Fe3+. SEM images indicate that the incorporation of Fe3+ deforms in some degree the homogeneity of the TiO2 system. Additionally, incorporation of Fe3+ ions to the network creates an impurity band near the VB due to the oxygen vacancies, resulting in the reduction of the effective optical band gap. Photocatalytic activity of fabricated thin films in the elimination of sulfamethoxazole (SMT) follows pseudo first-order kinetics. The highest SMT removal yields were achieved using the sample with 0.05%Fe. Additionally, the use of greater thicknesses improves the removal performance. However, material detachment limits the maximum usable value around 6 mu m. Finally, stability and reusability of catalysts were confirmed studying the photocatalytic activity over three cycles and evaluating that no Fe3+ leaching occurred.
PB SPRINGER HEIDELBERG
SN 0944-1344
YR 2021
FD 2021-11
LK http://hdl.handle.net/10498/25824
UL http://hdl.handle.net/10498/25824
LA eng
NO This research was supported by Ministerio de Economia y Competitividad (Project AGL2016-80507-R) and University of Cadiz (Project PR2018-048).
DS Repositorio Institucional de la Universidad de Cádiz
RD 10-nov-2026