The selective triazine herbicide atrazine is effective against several grassy and broad-leaf weeds. Because of its poor rate of biodegradability, atrazine herbicide is minimally present in aquatic environments. Despite atrazine's low water solubility, pollution of water resources with extremely hazardous herbicides is a major concern. Long-term negative effects of atrazine include hepatotoxicity, renal toxicity, endocrine disruption, a potential human carcinogen, and impaired vitamin function. The benefits of titanium dioxide include chemical stability, non-toxicity, cost, water insolubility, optical properties, and, most crucially, the ability to be recycled. To improve photocatalytic activity, broaden the UV spectral range to visible light, and inhibit electron-hole recombination, titanium dioxide catalysts are doped with metal and non-metal ions. Titanium oxide nanoparticles have a large specific surface area that ranges from 50 to more than 300 m2 g−1, which increases their ability of adsorption and photocatalysis.In this study, different analysis techniques were employed to characterize TiO2 nanoparticles that includes, scanning electron microscopy (SEM), X-ray diffraction (XRD), and Fourier transform infrared spectroscopy (FTIR) (before and after experimental investigation). The produced TiO2 nanoparticles were found to be between 200 and 250 nm in size, and the diffraction peaks of TiO2 nanoparticles from XRD analysis are revealed by the peaks at 38.5, 41, 46.5, 63, 74, and 77, respectively and The size of the particles is determined by SEM examination. The optimum process conditions i.e. time − 60 min, rpm of 600, dosage of 1 g/L of catalyst, pH 6, initial concentration of 200 ppm, and temperature of 70 °C. Based on the data obtained in this study, the percentage degradation of Atrazine was determined and was found to be 76.15%.