The aqueous extract of Tarragon, as a reducing agent, was used to synthesize silver-montmorillonite (MMT) nanocomposite (Ag-MMT-NPs) in the batch method. The leaf extract and metal solution concentrations were optimized to improve Ag-MMT-NPs synthesis in 48 h. For characterizing the nanocomposite, powder X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Transmission electron microscopy (TEM), and UV-Vis spectroscopy were performed. The peak was observed at 437 nm on the UV-Vis spectrum, showing the surface plasmon resonance of Ag-MMT-NPs. Using XRD analysis, the crystalline nature and purity of Ag-MMT-NPs were confirmed. FTIR was used to evaluate specific functional groups, causing a reduction in silver nitrate during Ag-MMT-NPs formation. According to TEM, the average particle size was 25.12 nm in AgNPs. The nanocomposite showed antibacterial properties against Gram-negative and Gram-positive bacteria (Escherichia coli and Staphylococcus aureus).
The aqueous extract of Adiantum capillus-veneris L was used as a reducing agent in the batch method for the synthesis of silver nanoparticles (AgNPs). For improving AgNP synthesis, the concentrations of metal ions solution and leaf extract were optimized in 24 h. Using Fourier transform infrared spectroscopy (FTIR), powder X-ray diffraction (XRD), transmission electron microscopy (TEM), and UV-Vis spectroscopy, AgNPs were characterized. In the UV-Vis spectrum, the peak was observed at 453 nm, indicating the surface plasmon resonance (SPR) of AgNPs. The purity and crystalline nature of AgNPs were confirmed based on the XRD assessment. In addition, specific functional groups, which led to silver nitrate reduction in AgNP formation, were examined using FTIR. According to TEM, the average particle size was 18.4 nm in AgNPs. Antibacterial activity assays with Escherichia coli and Staphylococcus aureus demonstrated that AgNPs reduced bacterial growth and produced well-defined inhibition zones.
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