Se-doped TiO2 nanoparticles with photocatalytic activity under visible light irradiation
Volume Title: 1
1Technical and Engineering Faculty, Department of Chemical Engineering, University of Mohaghegh Ardabili,
2محقق اردبیلی، اردبیل، ایران
Se-doped TiO2 nanoparticles were prepared by a simple solid-state method. The photocatalytic activity of the resulting Se-doped TiO2 particles was evaluated by photo degradation of methyl orange under visible light irradiation. Se-doped TiO2 nanoparticle’s structures were characterized by scanning electron microscope (SEM), energy dispersive X-ray accessory (EDX) and UV–Vis diffuse reflectance spectrum (UV–Vis DRS). All the Se-doped TiO2 samples showed photocatalytic activity higher than pure TiO2. The results showed that if the doping content of Se (which is used in the staring reaction medium) is more than 3%, the photocatalytic activity of the prepared Se-doped TiO2 will not be affected noticeably. In addition, it could be seen that the material’s shape is not changed after doping. The EDX results of the doped samples show the presence of Se in the synthesized TiO2 nanoparticles. Se-doped TiO2 prepared by the molten salt method might have the potential to be applied in wastewater treatment due to its ease of preparation.