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- Title
Enhanced photocatalytic performance and impact of annealing temperature on TiO<sub>2</sub>/Gd<sub>2</sub>O<sub>3</sub>:Fe composite.
- Authors
Omri, K.; Alonizan, N.
- Abstract
This work relates to an experimental study concerning the elaboration of the composite material TiO2/Gd2O3:Fe (TiO–Gd:Fe) from powders of Gd2O3 and TiO2 via a ball milling process with different annealing temperatures. The micro-structural and morphological characterizations of the ground Gd2O3−TiO2 mixture as well as the measurements of the optical properties were studied by X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier-transform infrared spectroscopy (FTIR) and UV–Vis diffuse reflectance spectroscopy. The X-ray results of the TiO–Gd:Fe composites reveal the presence of the TiO2 anatase phase in addition to the Gd2O3 phase. The direct band-gap of TiO–Gd:Fe sample is 3.22 eV for the 350 °C composite and 3.45 eV for the 600 °C composites. The results of FTIR spectroscopy confirm the presence of the TiO2 phase. The results of the photocatalytic tests of the composites show the (C − C0)/C0 ratio goes from 0.05 to 0.71 when the annealing temperature goes from 350 to 600 °C.
- Subjects
OPTICAL measurements; REFLECTANCE spectroscopy; FOURIER transform infrared spectroscopy; INFRARED spectroscopy; SCANNING electron microscopy; IRON powder
- Publication
Journal of Materials Science: Materials in Electronics, 2022, Vol 33, Issue 19, p15448
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-022-08451-y