The particle size of the synthesized catalysts was analyzed using Dynamic Light Scattering (DLS), and the results are presented in Table . The analysis reveals the average particle sizes and band gap energies of the two ternary-doped titanium dioxide photocatalysts. For the catalyst 1B-0.1Ce-0.06Ag-TiO₂, the average particle size was measured to be 125.2 nm, while for 1B-1Ce-0.06Ag-TiO₂, the particle size increased significantly to 669.9 nm. Correspondingly, the band gap energies for the two catalysts were 2.95 eV and 2.96 eV, respectively, showing minimal variation in energy levels despite the substantial difference in particle size.