Green Synthesis of MgO Nanoparticles and it Antibacterial Activity

This article reports a facile approach for the synthesis of MgO nanoparticles (MgO NPs) using aqueous leaf extracts of Pisidium guvajava (P. guvajava) and Aloe vera (A. vera). The synthesized MgO NPs were characterized using UV-visible spectroscopy, FTIR, XRD, FESEM, EDAX, and XPS analysis. Further antimicrobial activity of synthesized MgO NPs extensively studied for Gram-negative (Escherichia coli) and Gram-positive (Staphylococcus aureus) both of bacterial species well controlled MgO NPs. Both of the precursor material can be used as a reducing and capping agent. UV absorbance exhibits on 221 nm which confirms MgNO3 reduced as MgO. FTIR results confirm that plant precursors act as reducing and capping agents. X-ray diffraction confirms that the final products are pure and FCC crystal phase. FESEM with EDAX represented the synthesized MgO NPs having cubic shape and fully composed of MgO. XPS analysis indicates that the as-prepared MgO nanoparticles were composed of MgO and plant precursor. Antibacterial activity of as-prepared MgO NPs responded both of E. coli and S. aureus.