Bio-construction of MgO nanoparticles using Texas sage plant extract for catalytical degradation of methylene blue via photocatalysis

The green synthesis of metal oxides nanoparticles being as quick and ecofriendly synthetic method is a prevailing research trend alternative to toxic chemical synthetic routes. The objective of designing this research work is to reduce the negative impacts of synthetic methods and to flourish environmentally benign synthetic route for the metallic nanoparticles' synthesis. The present study was carried out to bio-synthesize the MgO nanoparticles using a basic building block plant extract. The MgO nanoparticles were synthesized using aqueous Texas sage (Leucophyllum frutescens) plant extract solution as caping agent. The green route synthesized MgO nanoparticles were used for morphological studies by FESEM, TEM and EDX, Structural studies via XRD, XPS and FTIR and optical analysis by UV-DRS. The XRD confirms the cubic structure of the nanoparticles with size similar to 34 nm. FT-IR analysis exposed the bio-chemical compounds responsible for the formation and ligation of the nanoparticles. TEM and FE-SEM revealed the rod-shaped nanoparticles formation. A characteristic metal and oxygen binding peak was observed at 296 nm that confirms the Mg-O formation. The photocatalytic effective-ness of synthesized nanoparticles, the degradation ability with was examined with Methylene blue (MB) under visible light irradiation. The 90% of degradation efficiency against MB dye was observed within 120 min of visible light irradiation. The antibacterial activity of the synthesized particles was tested against Staphylococcus aureus and Escherichia coli. It showed better bactericidal activity against Staphylococcus aureus as compared to Escherichia coli. The MgO nanoparticles are proved to be better and efficient applicant for water rescue and antibacterial materials. The overall results depicted that MgO nanoparticles obtained by green resource presented scope for multifaceted environmental and biological applications. [GRAPHICS] .

Automated summary

The green synthesis of metal oxides nanoparticles offers a quick and ecofriendly alternative to toxic chemical synthetic routes. In this study, MgO nanoparticles were successfully bio-synthesized using a plant extract and characterized for their morphological, structural, optical, and photocatalytic properties. The results demonstrated that the green-synthesized MgO nanoparticles showed promising potential for multifaceted environmental and biological applications.