Abstract
Utilization of biological materials in synthesis of nanoparticles is one of the hottest topics in modern nanoscience and nanotechnology. In the present investigation, the silver nanoparticles were synthesized by using the leaf and stem extract of Piper nigrum. The synthesized nanoparticle was characterized by UV-vis spectroscopy, X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM), energy dispersive X-ray analysis (EDAX), and Fourier Transform Infrared Spectroscopy (FTIR). The observation of the peak at 460 nm in the UV-vis spectra for leaf- and stem-synthesized silver nanoparticles reveals the reduction of silver metal ions into silver nanoparticles. Further, XRD analysis has been carried out to confirm the crystalline nature of the synthesized silver nanoparticles. The TEM images show that the leaf- and stem-synthesized silver nanoparticles were within the size of about 7–50 nm and 9–30 nm, respectively. The FTIR analysis was performed to identify the possible functional groups involved in the synthesis of silver nanoparticles. Further, the antibacterial activity of the green-synthesized silver nanoparticles was examined against agricultural plant pathogens. The antibacterial property of silver nanoparticles is a beneficial application in the field of agricultural nanotechnology.
Highlights
Development of bioinspired material for fabrication of nanoparticle is the cutting edge of research in modern nanotechnology because of its ecofriendliness, involvement of nontoxic molecules, solvents, and suitable process for large-scale production [1]
The diseases infected agricultural plant leaves such as Abelmoschus esculentus and Citrullus lanatus are shown in Figures 1(a) and 1(b)
The results clearly demonstrate that newly synthesized silver nanoparticles are promising antimicrobial agents against the plant pathogens employed
Summary
Development of bioinspired material for fabrication of nanoparticle is the cutting edge of research in modern nanotechnology because of its ecofriendliness, involvement of nontoxic molecules, solvents, and suitable process for large-scale production [1]. The plant materials gain more attention in the nanoparticle production [2]. The heavy metal-resistant capability and phytoremediation of plants are the basic concept for the synthesis of nanoparticles. The metal-resistant capability of plants has motivated the researchers to develop environmentally benign novel green nanofactories for the synthesis of noble nanoparticles. The plant-mediated synthesis is a rapid, flexible, and suitable process for large-scale production of nanoparticles. Plant parts like fruit [4], leaf [2], bark [5], seed [6], and stem [7] extracts have been effectively used for synthesis of nanoparticles. Owing to the excellent antimicrobial properties, the silver nanoparticles have been widely used in food packaging [11], preservation [12], cosmetics [13], and medicine [14]
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