Biosynthesis of silver nanoparticles by plants crude extracts and their characterization using UV, XRD, TEM and EDX

Abstract

Plant extracts are very cost effective and eco-friendly, thus, can be an economic and efficient alternative for the large-scale synthesis of nanoparticles. The preparation of stable, uniform silver nanoparticles by reduction of silver ions with Emblica officinalis, Terminalia catappa and Eucalyptus hybrida extract is reported in the present paper. It is a simple process of global research interest for obtaining silver nanoparticles in least amount of time. These nanoparticles were characterized with UV-Vis spectroscopy, X-ray diffraction (XRD), transmission electron microscopy (TEM) and energy diffraction X-ray (EDX analysis which revealed that the silver nanoparticles are polydisperse and of different morphologies ranging from 20 to 80 nm in size. XRD results reveal that these nanostructures exhibit a face-centered cubic crystal structure. The UV/Vis spectra absorption peak confirms their production. Pioneering of reliable and eco-friendly process for synthesis of metallic nanoparticles biologically is an important step in the field of application of nanobiotechnology. Thus, these silver nanoparticles (Ag-NPs) may prove as a better candidate for drugs and can potentially eliminate the problem of chemical agents because of their biogenic nature. The indiscriminate use of antibiotics has fuelled the development of drug resistance at an alarming rate. To overpower this burning problem, the Ag-NPs may prove to be a universal solution.

Ag2O Nanoparticles as a Candidate for Antimicrobial Compounds of the New Generation

“…The indicated methods allow us to image dry NPs and assess their size, shape, distribution on the surface of composite materials. To assess the elementary composition, proportion of organic impurities and conjugates, the following methods are used: UV-vis spectroscopy [115], Fourier transform infrared spectroscopy (FT-IR) [116,117], energy dispersive spectroscopy (EDX) [118], X-ray photoelectron spectroscopy (XPS) [119] and thermal gravimetric analysis (TGA) [120].…”

“…The most common other modifications of Ag 2 O NP synthesis are NP coating with polymers, Ag 2 O NP inclusion into other nanocomposites or fusion with NPs of oxides of other elements and NP synthesis in the medium of a substrate of the biological origin-most often an extract of plant leaves (Figure 1c) [34,47,118].…”

<p>Enhanced Anti-Bacterial Activity Of Biogenic Silver Nanoparticles Synthesized From Terminalia mantaly Extracts</p>

“…Conversely, green biosynthetic methods that use natural products as both reducing and capping agents have emerged as alternative synthesis routes. The green synthesis of nanomaterials has generated a great interest as it provides a simple, cost-effective, readily scalable, and eco-friendly products with minimal toxicity towards human beings 12–15. Natural products are used extensively as reducing as well as capping agents to prevent the agglomeration and increase the stability of the synthesized NPs 16–18.…”

Biogenic Synthesis of Zinc Oxide Nanoparticles Mediated by the Extract of Terminalia catappa Fruit Pericarp and Its Multifaceted Applications

“…The FT-IR analysis was done in the range of 400–4000 cm –1 to report the constituent functional groups found in the synthesized ZnO nanoparticles, as shown in Figure a. The reference to identify the absorption peaks were with respect to the standardized IR spectrum table . In the case of the biosynthesized ZnO nanoparticles from the pericarp extract of T.…”