Article 2025 · 15 citations

A study on the influence of metal Ag, Cu, and Fe doping on the morphological, structural, and photocatalytic activity of TiO2 nanostructures

Zakir, O., Ait-Karra, A., Idouhli, R., Khadiri, M., Dikici, B., Zegzouti, A., Abouelfida, A., Outzourhit, A.

Abstract

Metal-doped TiO2 nanoparticles (NPs) were elaborated by a sol-gel method using n-butoxide of titanium (IV) as precursors. The resulting NPs were characterized by scanning electron microscopy (SEM), energy-dispersive Xray spectroscopy (EDX), X-ray diffraction (XRD), Raman spectroscopy, and FTIR analysis. The SEM study shows the formation of a spheres-like structure. The EDX analysis proves the presence of Ag, Fe, and Cu on the doped TiO2 NPs. XRD and Raman spectroscopy analysis show that the doping inhibited the phase transformation and stabilized the anatase phase. The photocatalytic activity of prepared TiO2 NPs was evaluated in methylene blue (MB) photodegradation under UV irradiation. The results reveal that the doped TiO2 NPs were more efficient than undoped TiO2 NPs in the degradation of MB. The Cu-doped TiO2 NPs were found to be more efficient in this reaction with a degradation efficiency of about 92.31 % and a kinetic rate constant of about 10- 2 min- 1. The studies of the reactive species show that the holes are the main reactive species responsible for the photocatalytic oxidation of MB. Furthermore, the reusability studies showed that the photocatalysts are globally stable for the photodegradation of MB.

Keywords

TiO 2 Nanoparticles Doping Photocatalysis Methylene blue Sol-gel ANATASE TIO2 TITANIUM-DIOXIDE DOPED TIO2 RAMAN-SPECTROSCOPY METHYL-ORANGE OXIDE LAYERS CO2 PHOTODEGRADATION NANOPARTICLES DEGRADATION

WoS Categories

Chemistry, Physical Materials Science, Multidisciplinary Metallurgy & Metallurgical Engineering

Citation

Journal: JOURNAL OF ALLOYS AND COMPOUNDS
Year: 2025
Volume: 1010
ISSN: 0925-8388
eISSN: 1873-4669
DOI: 10.1016/j.jallcom.2024.177141
WoS UID: WOS:001345437200001

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