Recent Developments and Applications in Plant- extract Mediated Synthesis of Silver Nanoparticles (original) (raw)
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Role of Synthetic Plant Extracts on the Production of Silver-Derived Nanoparticles
Plants
The main antioxidants present in plant extracts—quercetin, β-carotene, gallic acid, ascorbic acid, hydroxybenzoic acid, caffeic acid, catechin and scopoletin—are able to synthesize silver nanoparticles when reacting with a Ag NO3 solution. The UV-visible absorption spectrum recorded with most of the antioxidants shows the characteristic surface plasmon resonance band of silver nanoparticles. Nanoparticles synthesised with ascorbic, hydroxybenzoic, caffeic, and gallic acids and scopoletin are spherical. Nanoparticles synthesised with quercetin are grouped together to form micellar structures. Nanoparticles synthesised by β-carotene, were triangular and polyhedral forms with truncated corners. Pentagonal nanoparticles were synthesized with catechin. We used Fourier-transform infrared spectroscopy to check that the biomolecules coat the synthesised silver nanoparticles. X-ray powder diffractograms showed the presence of silver, AgO, Ag2O, Ag3O4 and Ag2O3. Rod-like structures were obtai...
In Green Approaches: Synthesis of Silver Nanoparticles from Medicinal Plants-A Review
2015
Nanotechnology is a field that is mushrooming, making an impact in all spheres of human life. The development of green processes for the synthesis of nanoparticles is evolving into an important branch of nanotechnology.Synthesis of metal Nanoparticles is a growing area for research due to its potentiality in the application and development of advanced technologies. The use of AgNPs has become more widespread in our society. In this research article, a simple and eco-friendly biosynthesis of AgNPs was prepared using various plant extract as reducing agent. This review reports the potential of plants i.e. "green chemistry" to synthesis nanoparticles not only in the laboratory scale but also in their natural environment.
Silver Nanoparticles Ecofriendly Green Synthesis by Using Two Medicinal Plant Extract
TJPRC, 2013
Nanotechnology in present era gaining value due to capability of modulating metals in to their nanoparticles. There are few studies which are paying attention on the effects and mechanisms of nanomaterials on plants. The present research prominence on the biological synthesis of silver nanoparticle using herbal extract a natural biopolymer, acting as a reducing and stabilizing agent. In green synthesis we used natural reducing agents to synthesize nanoparticles (in this case silver nanoparticles). The leaves were found to be a good reducing as well as capping agent which can rapidly reduces silver ions (Ag+ to Ag). The characteristic color changes from pale yellow to dark brown in the reaction due to their specific properties (Surface Plasmon Resonance). Characterization of newly synthesized silver nanoparticle was made using UV – Visible spectroscopic technique. The UV-Vis spectrum of green synthesized silver nanoparticle from Jasminum grandiflorum and Cymbopogon citrullus have maximum absorbance peaks at 206.50 and 199.00 respectively. This study focus on a cost efficient ecofriendly and safe technique for the synthesis of silver nanoparticle using leaves of important medicinal plants.
PLANT MEDIATED SYNTHESIS OF SILVER NANOPARTICLES AND THEIR BIOLOGICAL ACTIVITY
Biological methods of synthesis have paved way for " greener synthesis " of nanoparticles and these have proven to be better methods due to slower kinetics, they offer better manipulation and control over crystal growth and their stabilization. This has motivated an upsurge in research on the synthesis routes that allow better control of shape and size for various nanotechnological applications. In this work, we have explored an inventive contribution for synthesis of silver nanoparticles using catharanthus roseus (Sadabahar), Musa paradisiacal (Plantain flower) and Polygonum odoratum (Coriandium) leaf extract. Synthesized nanoparticles were characterized by various methods such as UV-Vis spectroscopy, SEM and XRD. In addition, antibacterial activity of the synthesized silver nanoparticles was also determined. This new method is rapid time scales for biosynthesis of metallic nanoparticles using environmentally benign natural resources as an alternative to chemical synthesis protocols as reductant for synthesizing silver nanoparticles. 250 | P a g e
World Journal of Biology Pharmacy and Health Sciences
Developing environmentally acceptable and reliable nanoparticle production technologies is a crucial step in nanotechnology. Because of their unique chemical, physical and biological properties, AgNPs have the potential to be used in various ways. As potential agents, biomolecules got from a variety of plant components were used to make it. Despite many academic efforts in the previous decade, synthesizing stability with greater applicability remains a serious challenge. This review reviewed the most recent advancements and breakthroughs in the manufacture of biogenic AgNPs, as well as their potential uses.
Plant mediated synthesis of silver nanoparticles-tapping the unexploited sources
scholarsresearchlibrary.com
Interest in "green nanotechnology" in nanoparticle biosynthesis is growing among researchers. Nanotechnologies, due to their physicochemical and biological properties, have applications in diverse fields, including drug delivery, sensors, optoelectronics, and magnetic devices. This review focuses on the green synthesis of silver nanoparticles (AgNPs) using plant sources. Green synthesis of nanoparticles is an eco-friendly approach, which should be further explored for the potential of different plants to synthesize nanoparticles. The sizes of AgNPs are in the range of 1 to 100 nm. Characterization of synthesized nanoparticles is accomplished through UV spectroscopy, X-ray diffraction, Fourier transform infrared spectroscopy, transmission electron microscopy, and scanning electron microscopy. AgNPs have great potential to act as antimicrobial agents. The green synthesis of AgNPs can be efficiently applied for future engineering and medical concerns. Different types of cancers can be treated and/or controlled by phytonanotechnology. The present review provides a comprehensive survey of plant-mediated synthesis of AgNPs with specific focus on their applications, e.g., antimicrobial, antioxidant, and anticancer activities.
Synthesis of Silver Nanoparticles from Plant and Fruit Extracts- Summary on Research and Studies
Nanoparticles can be synthesized by various methods such as gas condensation, attrition, chemical precipitation, pyrolysis and hydrothermal synthesis. These nanomaterials find application in paint and pigment industry, electrical equipments and chemical processing industries. The enhancement of heat transfer coefficient by nanofluids is also widely discussed and investigated research area. Carbon nanotubes are used in antenas. They also find application in selective removal of some pollutants by adsorption. The high surface to volume ratio makes them highly catalytic and reactive. Synthesis of the nanoparticles can be carried out by various physical, physic chemical and biological methods. Current review summarizes research and studies on synthesis of silver nanoparticles from plant extracts. Silver nanoparticles are finding importance because of wide range of applications due to unique optical, electrical, and thermal properties. High electrical conductivity, stability, and low sintering temperatures are some important features of nanoparticles.
PLANT MEDIATED SYNTHESIS AND CHARACTERIZATION OF SILVER NANOPARTICLES
International journal of Pharmacy and Pharmaceutical Sciences, 2014
Objective: The study was aimed to synthesis and characterization of silver nanoparticles from five different herbal plants (Terminalia chebula, Mimusops elengi, Myristica fragrans, Centella asiatica and Hemidesmus indicus). Methods: The qualitative analysis of plant extracts was performed to determine the presence of secondary metabolites. The plant mediated silver nanoparticles were synthesized. The color changed into brown to black color indicating the formation of AgNPs. The characterization of synthesized AgNPs was carried out by different methods such as UV-Vis Spectra, FE-TEM, Particle size analysis, Zeta potential analysis, XRD and FTIR. The antimicrobial activity of synthesized silver nanoparticles also examined against three fungi and bacteria. Results: The UV wave length of AgNPs is from 300 to 450 nm. The average size of AgNPs 581 d.nm, zeta potential is-13.3 mV. The FTIR results show that AgNPs contains the functional groups. In antimicrobial activity of all AgNPs synthesized by five plants inhibits the growth of bacteria and Terminalia chebula showed maximum effect. The XRD pattern clearly confirmed that the synthesized silver nanoparticles are crystalline in nature. TEM results shows that synthesized silver nanoparticles are round in shape. Conclusion: The green synthesis of nanoparticles shows that cost-effective, environmentally friendly, and safe for human therapeutic use. Color change, UV-Vis spectra, TEM and XRD analysis confirmed the stability of synthesized AgNPs.
Biosynthesis of Silver Nano Particles Using Plant Extract
Journal of emerging technologies and innovative research, 2020
In this study capability of plant extract such as Allium cepa and Mentha piperita for synthesis of silver nano particles was evaluated. Samples showed change in colour from almost pale yellow to brown, which indicate the formation of silver nanoparticles in the reaction mixture. The appearance of brown colour was due to the excitation of surface Plasmon vibrations, while control showed no colour change when incubated in the same condition. The highest absorbance was recorded 1.70 of Allium cepa and 1.84 of Mentha piperita at 413 nm wavelength.
Green synthesis of silver nanoparticles using plant extracts
Proceedings of The 4th International Virtual Conference on Advanced Scientific Results, 2016
The use of silver nanoparticles in the field of nanomedicine is keeping pace and innovating with the ever expanding horizon of Nanobiotechnology. Ipomea species is widely cultivated and use for different purposes, such as, nutritional, medicinal, ritual and agricultural. The present study deals with the synthesis and characterization of silver nanoparticles using methonolic extract of Ipomoea indica flowers. UV-visible spectroscopy studies were carried out to assess the formation silver nanoparticles. The formation of Ag-NPs was confirmed by Scanning Electron Microscopy (SEM) and X-Ray Diffraction (XRD) studies. SEM image revealed that silver nanoparticles are quite polydispersed, the size ranging from 10nm to 50nm. The formation of crystalline silver nanoparticles was confirmed using X-ray diffraction analysis. Extracellular synthesis of Ag nanoparticles using dried biomass appears to be cost effective, eco-friendly to that of conventional methods of nanoparticles synthesis.