Photocatalytic activity of Eu-doped TiO₂ ceramic films prepared by microplasma oxidation method

Mesoporous TiO₂ ceramic films have been fabricated on titanium plates by the microplasma oxidation method. To increase the photocatalytic activity of the films, Eu(NO₃)₃ of different concentrations are added to the H₂SO₄ electrolyte solution. X-ray diffraction, X-ray photoelectron spectroscopy, atomic force microscopy, scanning electron microscopy techniques, reused and regenerated experiments are applied to characterize the modified films. Rhodamine B is used to evaluate the photocatalytic activity of the modified films. The results show that Eu ions are found in the porous TiO₂ films, and the film has high photocatalytic activity, good adherence to substrate, better reuse and regeneration properties.