The efficiency of magnetic TiO2 anatase loaded by graphen quantum dots for photocatalytic degradation of imipramine from aquatic media

Abstract

The efficiency of magnetic TiO 2 anatase loaded by graphen quantum dots for photocatalytic degradation of imipramine from aquatic media. Environmental Sciences. 20(1): 1-20. the of was the type IV and hysteresis loop of types due to mesoporous structure. FESEM images determined the almost spherical morphology of as-synthesized photocatalyst and homogenous distribution of TiO 2 nanoparticles on the magnetite surface that was utilized without any changes in morphology but particle size changing after loading TiO 2 on the magnetite particles. HRTEM results confirmed the spherical shape with less than 50 nm diameter and the lattice spacing related to anatase (TiO 2 ) and GQDs. Also, the photocatalytic efficiency of the as-synthesized nanocomposite was for achieving the maximum removal of related to different best yield 90% experimental and in under the optimum condition of ≈3, ≈40 for the dominant mechanism of imipramine degradation was oxidative decomposition via the photogenerated holes and followed by the first-order models under the UVA light irradiation. Therefore, results proved as-prepared photocatalyst Fe 3 O 4 /TiO 2 /GQDs could be developed for treatment of persistence organic pollutants in industrial wastewater under optimized conditions.