Synthesis and photocatalytic properties of nanomaterials based on titanium(IV) and cerium(IV) oxides

Resumo

We have studied the phase transitions, morphology, and photocatalytic activity of titanium(IV) oxide–cerium(IV) oxide materials at Ce doping levels from 1 to 20 wt % and heat-treatment temperatures from 80 to 1150°C. The highest photocatalytic activity under illumination in the spectral range λ ≥ 670 nm is offered by mesoporous X-ray amorphous and multiphase (X-ray amorphous phase + anatase + rutile + CeO₂) nanomaterials, whereas the two-phase materials (rutile + CeO₂) have the lowest photocatalytic activity.