In this work, TiO2 and doped TiO2 photocatalysts (Fe/TiO2 and Cu/TiO2) were synthesized by the sol-gel method. The main objective of this study was to investigate the influence of dopants on the structure, morphology, and activity of the catalysts in powder, and immobilized states. XRF,XRD, and SEM methods were used to characterize the catalysts. The structure and phase distribution of powders were identified by XRD. Nanoparticles crystalline size and degree of crystallinity were affected by doping. The anatase contents of catalysts were achieved as follows: TiO2 (5.89%)
