The significant increase in particle size observed for the 1B-1Ce-0.06Ag-TiO₂ catalyst warrants further investigation to confirm whether this is due to genuine particle growth or agglomeration. Scanning Electron Microscopy (SEM) analysis can provide detailed insights into the morphology and dispersion of the particles. SEM can visually identify whether the particles are well-dispersed or if there are clusters indicative of agglomeration. Additionally, SEM can complement DLS data by providing direct visualization of the particle structure, enabling a better understanding of the relationship between dopant concentration and particle size.