Abstract
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).Graphical
Highlights
Nanotechnology research and development has been an area of rapid growth worldwide [1]
Rapid, and green method to synthesize AgNPs, using Montmorillonite powder (MMT) and Tarragon leaf extract as both a reducing and capping agent under normal atmospheric conditions in the batch method in this study
To investigate whether an aqueous extract of Tarragon can be used in the green synthesis of AgNPs, we combined the extract with 1, 2 and 3 mM of AgNO3 for 24 h
Summary
Nanotechnology research and development has been an area of rapid growth worldwide [1]. AgNPs are used as coating in solar energy absorption They are used as optical receptors, biological labels, and intercalating materials for electrical batteries [3]. Metals, such as Ag, Au, Pd, and CdS, have been used for synthesizing metal NPs, the synthesis of Ag–NPs onto MMT supports with swelling and ion exchange properties is a good way to control the particle size [4, 5]. With chemical synthesis, it is difficult to control the stability, growth, and aggregation of particles, and capping agents are required for stabilization of NP size [2]. Use of biosynthetic green metal NPs is gaining increasing approval owing to its simplicity, non-toxicity, and amenability to large-scale production [12]
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