Green Synthesis of Manganese Oxide Nanoparticles by Aqueous Extract of Conocarpus Erectus L. Leaves

Abstract

The aqueous leaves extract of Conocarpus erectus L. was used to create the manganese nanoparticles, or MnONPs. When the leaf extract (5% w/v) is combined with MnCl2 (1M), the MnONPs become visible after a few hours with a color shift. Atomic force microscopy (AFM), scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared (FTIR), and UV-S were used to analyze MnONPs. The manganese nanoparticle size, as determined by XRD, was approximately 9 nm, while the aggregate size ranged between 14 and 67 nm, depending on SEM, when employing UV-S. The use of FTIR technology revealed the existence of phenol and other chemical active sites. All of these measurements were made using MnONPs and plant extract separately for comparison.