Rapid Biosynthesis of Silver Nanoparticles Using Areca Nut (Areca catechu) Extract Under Microwave-Assistance (original) (raw)
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Materials Letters
A simple and eco-friendly biosynthesis of silver nanoparticles (AgNPs) is reported here using apple fruit extract as reducing and capping media under microwave irradiation. AgNPs were characterized by UV-visible spectroscopy, XRD, FT-IR and TEM. The kinetics of reduction of aqueous silver ions during reaction with the apple fruit extract were monitored with the help of UVvisible spectroscopy. The XRD pattern of AgNPs was found agreeing with the fcc structure of Ag metal. Further, where TEM analysis exhibited formation of spherical shaped nanoparticles in the range of 10-45nm; FTIR analysis was carried out to identify the functional groups which were responsible for reduction/capping of AgNPs and conclude that the characterized AgNPs carry the potential for adoption in various medical and industrial applications.
Advanced Material Letters,
A simple and eco-friendly biosynthesis of silver nanoparticles (AgNPs) is reported here using apple fruit extract as reducing and capping media under microwave irradiation. AgNPs were characterized by UV-visible spectroscopy, XRD, FT-IR and TEM. The kinetics of reduction of aqueous silver ions during reaction with the apple fruit extract were monitored with the help of UVvisible spectroscopy. The XRD pattern of AgNPs was found agreeing with the fcc structure of Ag metal. Further, where TEM analysis exhibited formation of spherical shaped nanoparticles in the range of 10-45nm; FTIR analysis was carried out to identify the functional groups which were responsible for reduction/capping of AgNPs and conclude that the characterized AgNPs carry the potential for adoption in various medical and industrial applications.
Journal of Molecular Liquids, 2015
The paper reports a simple, versatile and ecofriendly protocol for the synthesis of silver nanoparticles using the aqueous extract of Areca catechu nut and its application in catalysis and antioxidant activity. Nanoparticles of varying sizes have been synthesized at 300 K and 373 K. The synthesized nanoparticles are characterized by UV-visible spectroscopy, Transmission Electron Microscopy, X-ray diffraction analysis and Fourier Transform Infra-Red Spectroscopy. The newly formed silver nanoparticles are stable, spherical and crystalline with average particle size varying from 18.2 to 24.3 nm on changing the temperature. The phytochemicals involved in the reduction and stabilization of silver nanoparticles are identified using FTIR spectra. The synthesized silver nanoparticles show potent catalytic activity in the degradation of organic pollutants (methylene blue, Eosin-yellowish, methyl orange, and 4-nitrophenol). The catalytic activity is found to be size dependent and the degradation reaction is observed to obey pseudo-first order kinetics. Moreover, antioxidant studies on the as synthesized nanoparticles reveal efficient scavenging of the stable or harmful free radicals including DPPH, NO and OH. The catalytic and antioxidant activities of the biogenic nanoparticles would find applications in environmental and biomedical field.
Microwave Synthesis of Silver Nanoparticles Using Different Pentose Carbohydrates as Reducing Agents
A fast, green and readily reproducible microwave-based method for the production of high quality silver nanoparticles (AgNPs) in high yield is presented. Starch is used as a stabilizing agent with few pentose different reducing carbohydrates as D-ribose, D-arabinose and L-arabinose. From the UV-vis peak profile spectra of the solutions of the silver nanoparticles, the authors have investigated the size of the NPs together with the average diameter, shape, and aggregation state of the colloidal AgNPs. TEM measurements and EDX analysis have confirmed the morphology of our AgNPs.
Journal of Water and Environmental Nanotechnology, 2021
Microwave assisted biosynthesis of nanoparticles has been a cost effective, environmentally benign, and alternative to the chemical method. In this context, we report eco-friendly and robust nanoparticles synthesized using the bio-waste (Banana leaves) extract material through a microwave method. The newly synthesized Banana Leaves extract -Silver Nanoparticles (BL-AgNPs) is confirmed by using the UV-Visible, FT-IR spectroscopy and Scanning Electron Microscopy (SEM) techniques. UV-Vis spectrum shows the widening of the band around 476 nm, which confirms the polydispersed nature of BL-AgNPs. FT-IR spectroscopy explores that, hydroxyl and carbonyl groups in the Banana Leaves extract play vital role in the reduction of silver ions and also attach with AgNPs. The phytochemical studies reveal that, the polyphenols and alkaloids present in the BL extract act as reducing and stabilizing agent, which is responsible for the reduction of Ag+ (silver ions) to Ag (BL-AgNPs) and stabilization of BL-AgNPs. This clearly confirms the formation of silver nanoparticles (AgNPs). SEM results revealed that, bead shape of BL-AgNPs with particle size of 80 to 100 nm. In conclusion, BL-AgNPs exhibits promising anticancer activity against lung cancer and breast cancer cell line by endorsing inhibition of cell migration and proliferation on low concentration.
Microwave Enhanced Synthesis of Silver Nanoparticles Using Orange Peel Extracts from Nigeria
2016
The gamut of applications for metal nanoparticles fuels the interest for their synthesis. The hazardous, time and energy consuming nature of conventional techniques necessitates the search for alternative methods of synthesis that ensures the desired size, shape and dispersity is achieved. The use of aqueous plant extracts to reduce toxic heavy metals is a spontaneous, cost effective, eco-friendly method used in the synthesis of nanoparticles. Microwave catalysis have also gained acceptance as another green method for material synthesis due to its high reaction rates and shortened reaction times. This study was embarked on to develop a rapid and eco-friendly method for synthesizing silver nanoparticles (AgNPs), stabilized within a biocompatible matrix using orange peel extracts, starch and a microwave. Data obtained revealed from the characterization of the synthesized AgNPs revealed that the surface plasmon resonance (SPR) peaked at 408nm using a UV-Visible Spectrophotometer. The E...
Microwave Assisted Biosynthesis of Silver Nanoparticles by Aqueous Extract of Ocimum Sanctum (Tulsi)
MGM Journal of Medical Sciences, 2014
Owing to widespread applications, synthesis and characteri zation of silver nanoparticles is recently attracting considerable attention. Increasing environmental concerns over chemical synthesis routes have resulted in attempts to develop biomimetic approaches. One of them is synthesis using plant parts, which eliminates the elaborate process of maintaining the microbial culture and often found to be kinetically favorable than other bioprocesses. The present study deals with investigating the effect of process microwave irradiation, interaction time on the morpho logy and size of silver nanoparticles synthesized using aqueous extract of Tulsi. Plant extract from ocimum sanctum (Tulsi) was used for the synthesis of silver nanoparticles (AgNPs) from silver nitrate solution. Silver nanoparticles were characterized by UVVis spectrophotometer and scanning electron microscope (SEM). The formation and stability of the reduced silver nanoparticles in the colloidal solution was monitored by UVVis spectrophotometer analysis. Nanoparticles ranges from 20 to 40 nm in size with nearly spherical shape were produced. SEM determination of the brown color stable samples showed the formation of silver nanoparticles and well dispersed nanoparticles could be seen in the samples treated with silver nitrate. These silver nanoparticles have proven to be stable for more than 3 months. It can be inferred from the study that fine tuning the bioprocess parameters will enhance possibilities of desired nanoproduct tail or made for particular applications.
ACS Sustainable Chemistry & Engineering, 2013
The use of silver nanoparticles (AgNPs) is gaining in popularity due to silver's antibacterial properties. Conventional methods for AgNP synthesis require dangerous chemicals and large quantities of energy (heat) and can result in formation of hazardous byproducts. This article summarizes recent activity in this general area where environmentally friendly synthetic techniques are currently being explored for the synthesis of "greener" AgNPs including the use of plant extracts, biodegradable polymers, and enzymes/bacteria and alternative energy input systems, such as microwave irradiation. Microwave heating enables efficient formation of nanostructures of uniform small sizes in shorter reaction times with reduced energy consumption; preventing agglomeration of ensuing nanoparticles is an additional attribute.
Journal of Physics: Conference Series
Banana is a typical fruit in Southeast Asia which has value in addition to being a food source. Agricultural and plantains processing industries generate enormous amount of waste in the form of banana peel. It is renewed that banana peel has several forms of biomass resources exist (such as starch or sugar crops, weeds, and oils plants, etc.) which can utilize for reducing agent in chemical synthesis. Therefore, this research aims to synthesize silver nanoparticles by a green synthesis using an extract derived from cultivated banana peel waste. To explore optional synthesis condition, characterization of synthesized silver nanoparticles (AgNPs) using UV-visible spectroscopy and Fourier transform infrared spectroscopy (FT-IR) were investigated. Besides, reducing sugar quantities of banana peel extract (BPE) was determined using DNS standard addition method. The results revealed that green synthesis of silver nanoparticles were accomplished using silver nitrate and BPE as the reductant. The optimized conditions for the AgNPs synthesis was a temperature of 60℃, 1.0 mM AgNO3, and a reactant ratio of 1: 2 (AgNO 3 to BPE). UV-Visible spectra demonstrated absorbance at 400 nm and 510 nm corresponding to AgNPs with the particle size in the range of 20-30 nm and 90-100 nm, respectively. Moreover, FTIR spectra revealed the role of functional group in BPE as a reducing agent of silver ions.
Journal of Nanoparticle …, 2011
Our research interest centers on microwave-assisted rapid extracellular synthesis of biofunctionalized silver nanoparticles of 26 ± 5 nm from guava (Psidium guajava) leaf extract with control over dimension and composition. The reaction occurs very rapidly as the formation of spherical nanoparticles almost completed within 90 s. The probable pathway of the biosynthesis is suggested. Appearance, crystalline nature, size and shape of nanoparticles are understood by UV-vis (UV-vis spectroscopy), FTIR (fourier transform infrared spectroscopy), XRD (X-ray diffraction), FESEM (field emission scanning electron microscopy) and TEM (transmission electron microscopy) techniques. Microwave-assisted route is selected for the synthesis of silver nanoparticles to carry out the reaction fast, suppress the enzymatic action and to keep the process environmentally clean and green.