Aqueous extract of Eucalyptus camaldulensis leaves as reducing and capping agent in biosynthesis of silver nanoparticles

Abstract

This study is one of the few studies that presents an ecofriendly procedure for biosynthesis of AgNPs via aqueous extract Eucalyptus camaldulensis leaves (AEECL). The main of current work was to ensure the ability of AEECL as reducing agent for synthesis of AgNPs. Characterization of AgNPs was carried out by UV-Vis, FTIR and XRD, SEM, EDX, DLS, and Zeta value. The surface Plasmon at 450 nm is the primary confirmation for the formation of Ag. Characterization studies by SEM found the synthesized AgNPs were spherical shape with size about 28 nm. The EDX analysis of the AgNPs confirmed strong signals for silver atoms. According XRD analysis, synthesis of Silver nanocrystals with size ∼16 nm was confirmed. The FT-IR study confirmed that the ECL extract acts both role as a reducing agent and a stabilizer of AgNPs. The DLS results confirmed the monodispersity of AgNPs with mean size of 68 nm.

Keywords:

• Silver nanoparticles (Ag-NPs)
• nano colloidal silver
• Eucalyptus camaldulensis
• green synthesis
• DPPH
• ABTS
• total phenols
• dynamic light scattering (DLS)
• zeta potential

Disclosure statement

No potential conflict of interest was reported by the authors.

Acknowledgements

The authors would like to thank Professor Mohamad Maher Kabakibi, President of Damascus University and Prof. Dr. Tamer Al Hajeh, President of Arab International University for their continued support and cooperation.