Synthesis and Characterization of Silver Nano Particles for EDM Applications

Banne, Shivaji V.; Patil, M. S.; Kulkarni, Raviraj M.; Patil, Sagar

doi:10.1016/j.matpr.2017.09.130

Cited by 36 publications

(23 citation statements)

References 4 publications

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“…The synthesis of the AgNPs was monitored by spectrophotometry (UV-1800 UV–Vis Spectrophotometer, SHIMADZU, Kyoto, Japan). The presence of an absorption peak at 420–480 nm, which is due to the collective oscillation of the surface electrons surface plasmon resonance (SPR) of metallic silver, confirms the synthesis of AgNPs [ 11 , 14 , 15 ].…”

Section: Methodsmentioning

confidence: 93%

“…The synthesis of AgNPs using a conventional reducing reagent was made according to the protocols reported by Banne et al (2017) and Pinto et al (2010) with minor modifications [14,15]. Three aqueous solutions were used (10 mM AgNO 3 , 20 mM NaBH 4 , and 0.6 mM sodium citrate) in volume ratio 1.25:1:1.…”

Section: Synthesis Of Agnps Using a Conventional Reducing Agentmentioning

confidence: 99%

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Effect of Plant Extracts on the Characteristics of Silver Nanoparticles for Topical Application

et al. 2020

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Silver nanoparticles (AgNPs) were synthesized using hydroalcoholic extracts of dittany (Origanum dictamnus), sage (Salvia officinalis), sea buckthorn (Elaeagnus rhamnoides, syn. Hippophae rhamnoides), and calendula (Calendula officinalis) as reducing agents. AgNPs synthesized using NaBH4 and citric acid were used as control. The impact of the origin of the extract and preparation conditions (light, temperature, reaction time) on the properties of the synthesized AgNPs was investigated. The structure, morphology, composition, physicochemical characteristics, and colloidal stability were characterized using dynamic laser scattering (DLS), ultraviolet-visible spectrophotometry (UV–/Vis), XRD, X-ray fluorescence (XRF), TEM, and FTΙR. The reduction of total phenolic and flavonoid content of the extracts after the reaction of AgNPs synthesis was also determined. Low IC50 values for all types of AgNPs revealed good antioxidant activity, attributable to the phenolic and flavonoid content of their surface. The results suggest that plant extract selection is important to the green synthesis of AgNPs because it affects the kinetics of their synthesis as well as their morphology, physicochemical characteristics, and colloidal stability. In vitro permeation studies on porcine skin revealed that AgNPs remained at the upper layers of stratum corneum and did not penetrate the skin barrier after 4 h of cutaneous application suggesting the safety of their application on intact skin for a relatively short time.

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Section: Methodsmentioning

confidence: 93%

Section: Synthesis Of Agnps Using a Conventional Reducing Agentmentioning

confidence: 99%

Effect of Plant Extracts on the Characteristics of Silver Nanoparticles for Topical Application

et al. 2020

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“…Along with the rapid development of nanotechnology, several promising approaches were utilized to synthesize AgNPs and AuNPs [5][6][7]. Owing to the simplicity and rapid operation, chemical reduction methods using commercial chemicals such as hydrazine [8], sodium borohydride [9], ascorbic acid [10], and ethylene glycol [11] are widely applied to convert gold and silver ions into metals at nanoscale. However, these methods have a major drawback related to the toxicity originated from the excess amount of the used chemicals that can affect the quality of nanoproducts.…”

Section: Introductionmentioning

confidence: 99%

Biosynthesis of Silver and Gold Nanoparticles Using Aqueous Extract of Codonopsis pilosula Roots for Antibacterial and Catalytic Applications

Doan

Huynh

Nguyen

et al. 2020

Journal of Nanomaterials

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In this study, biogenic silver nanoparticles (AgNPs) and gold nanoparticles (AuNPs) were synthesized by a green approach using an aqueous extract from Codonopsis pilosula (CP) roots as a reducing and stabilizing agent. The formation of CP-AgNPs and CP-AuNPs was confirmed and optimized by UV-Vis spectroscopy. The CP-AgNPs and CP-AuNPs obtained under optimum conditions of metal ion concentration, reaction temperature, and reaction time were characterized by high-resolution transition electron microscopy (HR-TEM), selected area electron diffraction (SAED) analysis, field-emission scan electron microscopy (FE-SEM), powder X-ray diffraction (XRD) analysis, Fourier transform infrared (FTIR) spectroscopy, dispersive X-ray spectroscopy (EDX), and dynamic light scattering (DLS) method. It has been found that the biosynthesized CP-AgNPs and CP-AuNPs were formed in spherical shape with an average size of 10±2.5 nm and 20±3.2 nm, respectively. The biosynthesized metallic nanoparticles exhibited selective bacterial activity against three bacterial strains including two Gram-positive bacteria of Bacillus subtilis and Staphylococcus aureus and one Gram-negative bacteria of Escherichia coli. Meanwhile, there was no antibacterial activity detected toward Gram-negative Salmonella enteritidis. CP-AgNPs and CP-AuNPs also manifested an excellent catalytic performance in the reduction of 1,4-dinitrobenzene, 2-nitrophenol, 3-nitrophenol, and 4-nitrophenol.

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“…The mechanism of nanoparticle formation using sodium borohydride can be expressed as in Eq. (1) [14]: (1) In AgNPs synthesis, PVP should be added first followed by the addition of NaCl. The addition of PVP without NaCl may result in aggregation, so in this case PVP acts as a stabilizer.…”

Section: Resultsmentioning

confidence: 99%

Radiolabeling Technique of Silver Nanoparticles (AgNPs) with Iodine-131 Radionuclide

et al. 2020

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Radiotherapy is an effective cancer therapy, where a certain dose of radiation is aimed specifically at target and is unaffecting to normal tissue. A selective radionuclide must be attached to the specific targeted organ. In this research, silver nanoparticles (AgNPs) were labeled with radionuclide of iodine-131 (131 I) to be used in radiotherapy. Silver nanoparticles were synthesized using silver nitrate 0.0005 M, sodium borohydride 0.002 M, polyvinylpyrrolidone 0.3 % (w/v) and natrium chloride 1.5 M, and then followed by purification by centrifugation. Characterization was carried out with UV-Vis spectrophotometer, transmission electron microscope, particle size analyzer, and zeta-sizer. The results show that the maximum absorbance is on a wavelength of 398 nm, spherical shape with a diameter of 10 nm, polydispersity index of 0.455, and zeta potential value of-8 mV. The radiolabeling was done by adding sodium iodide-131 which had been oxidized by chloramine-T and immobilized in AgNPs colloidal solution, and the activity was then measured using a dose calibrator. The identification of radionuclide showed that the sample was free of impurities. The optimum system of radiochemical purity was obtained using Whatman 1 paper strip as the stationary phase and a mixture of methanol: water: ammonium acetate (1:1:1) as the mobile phase, which gave 96 % purity. This method is suitable for radiolabeling AgNPs with 131 I to be used for radiotherapy.

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Synthesis and Characterization of Silver Nano Particles for EDM Applications

Cited by 36 publications

References 4 publications

Effect of Plant Extracts on the Characteristics of Silver Nanoparticles for Topical Application

Effect of Plant Extracts on the Characteristics of Silver Nanoparticles for Topical Application

Biosynthesis of Silver and Gold Nanoparticles Using Aqueous Extract of Codonopsis pilosula Roots for Antibacterial and Catalytic Applications

Radiolabeling Technique of Silver Nanoparticles (AgNPs) with Iodine-131 Radionuclide

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