Green synthesis and characterization of zinc oxide nanoparticles using extracts of Artemisia annua l. grown in Togo

Abstract

Plant-mediated synthesis of ZnO nanoparticles (ZnONPs) is preferable than the conventional methods with many applications in medicine and biology. Artemisia annua is recognized to have antiplasmodial, antimicrobial activities, so the nanoformulation based on its extracts and zinc oxide would be of therapeutic benefit. This study aims to investigate properties of ZnONPs based on Artemisia annua leaves and stems extracts and zinc acetate. Spectroscopy techniques, XRD, SEM and Energy Dispersive X-ray Spectroscopy (EDS) were used to investigate the structural and optical properties of the ZnONPs. The characteristic absorption peak was at 375.5 nm and the excitation at 365 nm showed wide spectra in visible (450-700 nm). XRD, SEM and EDS analysis confirmed a pure ZnONPs in wurtzite hexagonal structure with a size of 21.34 - 24.71 nm. These nanoformulations would be multifunctional and are candidate for treatment of malaria, cosmetics and optoelectronic.