synthesis of zinc oxide nanoparticles using cumin and Curcuma, and its application towards photocatalytic degradation

Zinc oxide nanoparticles (ZnO NPs) were successfully synthesized by a green method using cumin and Curcuma and zinc acetate dihydrate [Zn (CH3COO)2. 2H2O]as salt precursors . The particle size and phase structure of zinc oxide were determined by X-ray diffraction, high-resolution transmission electron microscopy and field emission scanning electron microscopy. The produced zinc oxide nano particles are crystalline with a grain size of 24–50 nm. Energy Dispersive Spectrum (EDX) results affect the composition of Zinc and Oxygen, giving high energy signals of 76.9.4% and 23.1% for Oxygen and zinc, respectively. (FT-IR) spectroscopic analysis shows the absorption peak of Zinc and oxygen Zn–O bonding between 400 and 600 cm-1.The different characterization methods carried out prove the formation of nano Zinc oxide.The ZnO NPs were used as catalysts for the photodegradation of methylene blue under visible light radiation. The results indicate that the prepared ZnO material excellently removed MB methlyene blue with efficiencies of 82.78%, after 150 min, This green method of synthesis was found to be eco-friendly .