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Medicinal plants engrossed great attention for the synthesis of new chemical entities and its biomolecules has fabulous application in many fields such as corrosion, nanotechnology, pharmaceutical companies, and cosmetic industries. The main purpose of the present work is biosynthesis of zinc oxide nanoparticles via simple homogeneous precipitation method using the isolated flavonoid quercetin, which was derived from the medicinal plant Combretum ovalifolium. Antioxidant activity and photocatalytic degradation of methylene blue dye were studied on the synthesized ZnONPs. Zinc acetate dihydrate (Zn (CH3COO)2.2H2O) was utilized as a precursor and quercetin as a reducing agent. Formed Quercetin mediated zinc oxide nanoparticles (Q-ZnONPs) were characterized by UV-Visible, FT-IR, XRD, EDX, and SEM. Fiber shaped Q-ZnONPs were obtained with single crystalline nature, its average diameter was found to be 31.24nm. The results shows that, 168.045μg/ml of Q-ZnONPs scavenged 50% of DPPH on antioxidant activity. The degradation behaviour of the nanomaterial was analysed. The results showed that on the addition of biosynthesized Q-ZnONPs, the degradation of methylene blue increased up to 76.01% at 240 minutes.

oriental journal of chemistry/oriental journal of chemistry

Biofabrication of Zinc Oxide Nanoparticles using the Isolated Flavonoid from Combretum ovalifolium and its Anti-oxidative Ability and Catalytic degradation of Methylene blue Dye