Biosynthesis and Characterization of Silver Nanoparticles by Silybum marianum (silymarin) Fruit Extract

In this study, silver nanoparticles (AgNPs) were obtained using a green-chemistry procedure. For this protocol, the Carrasquilla extract (CE) (Berberis hallii) and a AgNO3 solution were used as the reducing agent and the metal precursor, respectively. The as-prepared AgNPs after characterization were then used to evaluate the degradation of the methylene blue (MB), the safranin (SF), and the mixture of both dyes in the aqueous phase under solar light irradiation. The photocatalytic activity of AgNPs for the degradation of the MB (k = 0.0092 min−1) was higher than the SF (k = 0.00016 min−1) due to the susceptibility of the thiazine ring of the MB to photodegradation contrasted to the phenyl phenazine of the SF. However, SF was mostly removed by adsorption with a maximum uptake of 2907 mg/g. Overall, this eco-friendly and green conversion of silver ions to metallic elements avoids the use of toxic chemicals and could be applied for the degradation/adsorption of dyes used in several industrial processes.

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Biosynthesis and Characterization of Gold and Silver Nanoparticles Using Milk Thistle (Silybum marianum) Seed Extract

Journal of Nanoscience ◽

10.1155/2014/905404 ◽

2014 ◽

Vol 2014 ◽

pp. 1-8 ◽

Cited By ~ 12

Author(s):

R. Gopalakrishnan ◽

K. Raghu

Keyword(s):

Silver Nanoparticles ◽

Seed Extract ◽

Milk Thistle ◽

X Ray Diffraction ◽

Silybum Marianum ◽

Gold And Silver Nanoparticles ◽

Selected Area Electron Diffraction ◽

Transmission Electron ◽

Vis Spectroscopy

Biogenic synthesis of gold and silver nanoparticles from aqueous solutions using milk thistle (Silybum marianum) seed extract as reducing and stabilizing agent has been reported. Formation and stabilization of nanoparticles were monitored using surface plasmon resonance (SPR) bands of UV-Vis spectroscopy. Morphology of gold and silver nanoparticles was investigated using X-ray diffraction, high-resolution transmission electron microscopy with selected area electron diffraction analysis, and dynamic light scattering. Fourier transform-infrared spectroscopy was employed to identify the possible biomolecules responsible for the reduction and stabilization of nanoparticles.

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Green Synthesis and Characterization of Silver Nanoparticles from Momordica charantia Fruit Extract: Study of Antimicrobial Activities

International Journal of Pure & Applied Bioscience ◽

10.18782/2320-7051.2539 ◽

2017 ◽

Vol 5 (2) ◽

pp. 107-117 ◽

Cited By ~ 1

Author(s):

N. Supraja ◽

Keyword(s):

Silver Nanoparticles ◽

Green Synthesis ◽

Antimicrobial Activities ◽

Momordica Charantia ◽

Synthesis And Characterization ◽

Fruit Extract

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Synthesis and Characterization of Silver Nanoplates by a Seed-mediated Method

Communications in Physics ◽

10.15625/0868-3166/29/3/13763 ◽

2019 ◽

Vol 29 (3) ◽

Author(s):

Mai Ngọc Tuan Anh

Keyword(s):

Hydrogen Peroxide ◽

Silver Nanoparticles ◽

Ascorbic Acid ◽

Silver Nitrate ◽

Sodium Borohydride ◽

Trisodium Citrate ◽

Synthesis And Characterization ◽

Silver Nanoplates ◽

Seed Mediated

Silver nanoplates (SNPs) having different size were synthesized by a seed-mediated method. The seeds -silver nanoparticles with 4 – 6 nm diameters were synthesized first by reducing silver nitrate with sodium borohydride in the present of Trisodium Citrate and Hydrogen peroxide. Then these seeds were developed by continue reducing Ag\(^+\) ions with various amount of L-Ascorbic acid to form SNPs. Our analysis showed that the concentratrion of L-Ascorbic acid, a secondary reducing agent, played an important role to form SNPs. In addition, the size and in-plane dipole plasmon resonance wavelenght of silver nanoplates were increased when the concentration of added silver nitrate increased. The characterization of SNPs were studied by UV-Vis, FE-SEM, EDS and TEM methods.

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