Plant mediated green biosynthesis of silver nanoparticles using Vitex negundo L. extract

Zargar, Mohsen; Shameli, Kamyar; Najafi, Gholam Reza; Farahani, Farah

doi:10.1016/j.jiec.2014.01.016

Cited by 100 publications

(40 citation statements)

References 32 publications

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“…Many studies have attempted to use different kind of plant‐based reducing agents and have successfully synthesized AgNPs ,. Among of these plant, Parkia speciosa ( P. speciosa ) extract shows good potential as reducing agent owing to the presence of active organic compounds such as phenolic (50‐85 wt.%), flavonoids (5‐6 wt.%), saponins and tannins which is vital for reduction of metal ions and following by capping of AgNPs .…”

Section: Figurementioning

confidence: 99%

Parkia speciosa as Reduction Agent in Green Synthesis Silver Nanoparticles

et al. 2018

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Synthesis of nanoparticles based on plant extract as reduction agent has been discovered extensively due to its environmental friendly approach. In this work, a facile silver nanoparticles is synthesized via incorporation of silver nitrate aqueous solution with Parkia speciosa leaves extract. Centrifugation is introduces to improve the characteristics of nanoparticles. Chemical interactions have identified –OH stretching vibration, C=O and C=C, proving the presence of phenolic, terpenoid and flavonoid capped on silver nanoparticles. The TEM result demonstrates the silver nanoparticles had consistence spherical nanoparticles shape with average particles size (59.96 nm) in accordance with FESEM analysis. The structural analysis by XRD shows the nanoparticles had high degree of crystallinity (97%) and crystallite size (17.95 nm). The optical analysis by UV‐Vis reveals that the nanoparticle produces brown colour solution with high absorption band (465 nm). This proves that Parkia speciosa extract has potential as reduction agent in synthesis of silver nanoparticles.

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Section: Figurementioning

confidence: 99%

Parkia speciosa as Reduction Agent in Green Synthesis Silver Nanoparticles

et al. 2018

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“…37 Moreover, they are increasingly being used in antimicrobial agents for augmentation of their potencies. [23][24][25]38,39 AgNPs are widely being used and examined in areas such as biosensing, photonics (as spectrally selective coatings for solar energy absorption), electronics (as an intercalation material for electrical batteries), antimicrobial application, and are also used as potential optical receptors for biolabeling. [40][41][42] The main aim of this study was to synthesize AgNPs using aqueous leaves extract of Rosa damascena as bioreducing agent to reduce Ag + to Ag 0 , which were later analyzed and characterized by using ultraviolet-visible (UV-Vis) spectroscopy, fourier transform infrared spectroscopy (FTIR), transmission electron microscopy (TEM), dynamic light scattering (DLS), and field emission scanning electron microscopy (FESEM).…”

Section: Ahmad Et Almentioning

confidence: 99%

Phytofabrication of bioinduced silver nanoparticles for biomedical applications

Ahmad¹,

Bhatnagar²,

Ali³

et al. 2015

IJN

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Synthesis of nanomaterials holds infinite possibilities as nanotechnology is revolutionizing the field of medicine by its myriad applications. Green synthesis of nanoparticles has become the need of the hour because of its eco-friendly, nontoxic, and economic nature. In this study, leaf extract of Rosa damascena was used as a bioreductant to reduce silver nitrate, leading to synthesis of silver nanoparticles (AgNPs) in a single step, without the use of any additional reducing or capping agents. The synthesized nanoparticles were characterized by the use of UV-visible spectroscopy, fourier transform infrared spectroscopy, dynamic light scattering, transmission electron microscopy, and field emission scanning electron microscopy. Time-dependent synthesis of AgNPs was studied spectrophotometrically. Synthesized AgNPs were found to possess flower-like spherical structure where individual nanoparticles were of 16 nm in diameter, whereas the agglomerated AgNPs were in the range of 60–80 nm. These biologically synthesized AgNPs exhibited significant antibacterial activity against Gram-negative bacterial species but not against Gram-positive ones ( Escherichia coli and Bacillus cereus ). Anti-inflammatory and analgesic activities were studied on a Wistar rat model to gauge the impact of AgNPs for a probable role in these applications. AgNPs tested positive for both these activities, although the potency was less as compared to the standard drugs.

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“…Metal nanoparticles, particularly noble metals, have been studied mainly because of their strong optical absorption in the visible region caused by the group excitation of the free electron gas (Mohamed et al 2000). The silver nanoparticles have a large area of interest as they have a large number of applications: nonlinear optics, spectrally selective coating for solar energy absorption, biolabeling, intercalation materials for electrical batteries as optical receptors, catalyst in chemical reactions, antibacterial materials, chemically stable materials and good electrical conductors (Zargar et al 2014;Sharma et al 2009). They are ahead of time the interest of researchers for their novel method for synthesis of silver nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

Characterization of silver nanoparticles by green synthesis method using Pedalium murex leaf extract and their antibacterial activity

2015

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In this paper, an aqueous extract of fresh leaves of Pedalium murex was used for the synthesis of silver (Ag) nanoparticles. Different biological methods are gaining recognition for the production of silver nanoparticles (AgNPs) due to their multiple applications. The use of plants in the green synthesis of nanoparticles emerges as a cost-effective and eco-friendly approach. Characterization of nanoparticles was done using different methods, which include; ultraviolet-visible spectroscopy (UV-Vis), Fourier transform infrared (FTIR), powder X-ray diffraction (XRD), field emission scanning electron microscope (FE-SEM), energy dispersive X-ray analysis (EDAX), fluorescence emission spectroscopy, transmission electron microscope (TEM), dynamic light scattering (DLS), zeta potential and antibacterial activity. UV-visible spectrum of the aqueous medium containing silver nanoparticles showed absorption peak at around 430 nm. Fourier transform infrared spectra had shown that the biomolecule compounds were responsible for the reduction and capping material of silver nanoparticles. XRD study showed the particles to be crystalline in nature, with a face-centered cubic (fcc) structure. The size and stability were detected using DLS and zeta potential analysis. The antibacterial activity of AgNPs against generally found bacteria was assessed to find their potential use in silver-containing antibacterial product.

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Plant mediated green biosynthesis of silver nanoparticles using Vitex negundo L. extract

Cited by 100 publications

References 32 publications

Parkia speciosa as Reduction Agent in Green Synthesis Silver Nanoparticles

Parkia speciosa as Reduction Agent in Green Synthesis Silver Nanoparticles

Phytofabrication of bioinduced silver nanoparticles for biomedical applications

Characterization of silver nanoparticles by green synthesis method using Pedalium murex leaf extract and their antibacterial activity

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