Se-Doped Tio2 Nanoparticles With Photocatalytic Activity Under Visible Light Irradiation

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#