Photocatalytic degradation of textile wastewater in presence of hydrogen peroxide: Effect of cerium doping titania

• Ce–TiO2 materials prepared by sol–gel method are studied as photocatalysts.
• Textile effluent was degraded by photocatalyse.
• H2O2 was employed as oxydant.
• The improvement of photoactivity depends of the presence of Ce doping ion.
• Environmental impact was explored for the optimal test.

Ce–TiO2 catalysts synthesized through sol–gel method were explored for textile wastewater photocatalytic degradation in presence of H2O2. Synthesized materials were characterized by X-ray diffraction, Raman spectroscopy, UV–visible diffuse reflectance spectroscopy, N2 physisorption at 77 K and H2-temperature programmed reduction. Suitable amount of cerium (1%) significantly inhibits the electron–hole pairs recombination and reduces the energy gap values of the materials. 1% Ce–TiO2 catalyst demonstrated superior catalytic performances permitting a 40% and 55% of TOC and color conversions, respectively. The relationship between photocatalytic activity and physicochemical properties was discussed. Environmental impact of textile wastewater was evaluated by the bioluminescence test using the LUMIStox.

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