Rare Earth‐Doped TiO ₂ for Enhanced Photocatalytic Performance

Soaring environmental apprehension about the watercontamination due to the industrial dye effluents has incited the researchers for the advancement of photocatalytic environmental remediation. Classical methods often fall short in the removal of the extremely water‐soluble dyes, making photocatalysis a persuasive surrogate. TiO 2 has pervasive bid in the field of photocatalysis due to its high stability, nontoxicity, and strong oxidation potential. Moreover, the rare earth metal doping on the TiO 2 showcase the surface area modifications, charge carrier dynamics, extension of light absorption region, and procrastination of photogenerated excitons. In the preview, this review provides an insightful analysis of rare earth metal (Ce, Nd, Sm, Eu, and Er)‐doped TiO 2 nanophotocatalysts synthesized via various chemical techniques. Furthermore, the plausible mechanism of photocatalytic dye degradation via rare earth metal‐doped TiO 2 has also been discussed in detail. Recent advances, challenges, and future perspectives of photocatalytic systems have been highlighted.