Mesoporous titanium dioxide films were fabricated on titanium plates by the micro-plasma oxidation method. To increase the photo-catalytic activity of the films, Eu(NO 3 ) 3 of different concentrations were added to the H 2 SO 4 electrolyte solution. Eu incorporation was found in the porous titania films. Furthermore, Na 2 SiO 3 of different concentrations was also added to the electrolyte solution, which led to Si incorporation into the film as well. A model textile industry pollutant (Rhodamine B) was used to study the photo-catalytic properties of the modified films. The photo-catalytic activity of these films turned out to be improved by the additives to the electrolyte solution. The enhanced photo-catalytic activity might result from (i) the increased porosity, producing more reactive sites to absorb and oxide pollutants; (ii) electron trapping at Eu sites suppressing the e − /h + pair recombination, therefore, improving the photo-catalytic processes.