Green Synthesis of Silver Nanoparticles (Ag-NPs) Using Debregeasia Salicifolia for Biological Applications

Abstract

The synthesis of nanoparticles (NPs) using the green route is environmentally harmonious and cost-effective compared to conventional chemical and physical methods. In this study, the green synthesis of silver NPs was carried out using an extract of Debregeasia salicifolia. The synthesized Ag NPs were characterized by means of different techniques i.e., UV-Vis spectroscopy, FTIR spectroscopy, SEM, and XRD. The XRD pattern exhibited distinctive Bragg’s peaks at (200), (111), (311), and (220). The XRD analysis confirmed the face-centered cubic geometry of the synthesized NPs and revealed that the nature of these NPs is crystalline. The synthesized NPs were verified for their antibacterial activities against Gram-negative Escherichia coli (E. coli) and Gram-positive Staphylococcus aureus (S. aureus) bacteria. It showed that antibacterial activity of synthesized silver (NPs) was increased with increasing concentrations of both calcined and non-calcined NPs. The antioxidant activities of Ag NPs were also determined against ABTS at different concentrations for both calcined and non-calcined Ag NPs. Non-calcined Ag NPs have greater antioxidant activity than calcined Ag NPs. This report has a significant medicinal application, and it might open up new horizons in this field.

WITHDRAWN: Salvia sclarea L.-Mediated Synthesis of Silver Nanoparticles: Characterization, Secondary Metabolite Influence, and Antibacterial Activity Assessment

“…In a separate study, absorption spectra of AgNPs synthesized from Syzygium jambola indicated a peak at 460 nm(Ghareeb et al 2016). Similarly, Khan et al observed a maximum absorption spectrum of AgNPs synthesized from Debregeasia salicifolia leaf extract at 470 nm(Khan et al 2022). As the concentration of AgNO 3 increased, the SPR peak of the AgNPs became more pronounced, reaching its highest intensity at 50 mM of AgNO 3 .…”

Ternary Metal (Cu–Ni–Zn) Oxide Nanocomposite via an Environmentally Friendly Route

“…Figure a depicts the FT-IR spectrum of the synthesized nanocomposite, which possesses a broad peak between 3568 and 3343 cm –1 possibly due to lattice water or atmospheric water. − The band at 2941 cm –1 is due to C–H stretching . The peak at 1595 cm –1 is because of the aromatic CC stretch.…”

Stable biogenic silver nanoparticles fromSyzygium nervosumbud extract for enhanced catalytic, antibacterial and antifungal properties

“…The plates were stored at 37 °C for 24 h, aer which the antibacterial activity was evaluated by measuring the diameter of the inhibitory zone produced by the tested bacteria. 37,38 Field trial and assessment of BioAgNPs…”