ZnO and Mg doped ZnO nanoparticles (NPs) were synthesized via chemical reduction technique, which were used as photocatalysts for the photodegradation of chlorpyrifos pesticide in aqueous media. The morphological study presented that ZnO NPs has hexagonal and spherical shape while Mg doped ZnO has needle like irregular structure. The XRD pattern demonstrates the crystalline size of ZnO and Mg doped ZnO NPs having diameter 31 and 34.30 nm, respectively. FTIR spectra showed peaks at 703, 419 and 1391–1448, cm −1 , which represent the metal oxide nanoparticles. The photocatalytic degradation study demonstrated that ZnO and Mg doped ZnO NPs degraded about 94 and 97% pesticide within 25 min, respectively. The effect of various parameters like irradiation time, pH, initial pesticide concentration and catalyst dosage on the photodegradation of pesticide were also studied. The recovered and re-recovered ZnO and Mg doped ZnO NPs were also significantly degraded the chlorpyrifos pesticide in aqueous media. Further, both types of NPs exhibited promising bioactivity and Antileishmanial activities.
Ali et al. (Tue,) studied this question.