The superior performance of bare TiO₂ underscores its unmatched photocatalytic activity under UV-A light. However, the tri-doped catalysts present potential advantages in specific scenarios, particularly under conditions where visible light activation or reduced recombination is necessary. The modest improvement in photocatalytic efficiency with the best-performing tri-doped catalyst (B1Ce1Ag0.1TiO₂) suggests further optimization of dopant ratios and synthesis methods is necessary to rival the performance of bare TiO₂.