Photoinduced green synthesis of silver nanoparticles with highly effective antibacterial and hydrogen peroxide sensing properties

Kumar, Vijay; Gundampati, Ravi Kumar; Singh, Devendra Kumar; Bano, Daraksha; Jagannadham, Medicherla V.; Hasan, S. H.

doi:10.1016/j.jphotobiol.2016.06.037

Cited by 44 publications

(18 citation statements)

References 50 publications

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“…This can be explained that the presence of greater number of photons of certain wavelength in sunlight promoted the reducing action, thus, promoting the AgNPs formation. According to Cumar et al [28], AgNPs formation under sunlight was occurred with four main steps: i) The first step is the photo-activation including the photosensitization of polyphenolic compound (flavonoid) present in extract. As soon as the reaction mixture exposed to sunlight the flavonoid molecule absorbed the photons of energy and got excited.…”

Section: Effect Of Sunlight On the Synthesis Of Agnpsmentioning

confidence: 99%

Fortunella japonica extract as a reducing agent for green synthesis of silver nanoparticles

Anh

Linh

et al. 2018

IJET

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A rapid way of synthesizing silver nanoparticles (AgNPs) by treating Ag+ ions with a green Fortunella Japonica (F.J.) extract as a combined reducing and stabilizing agent was investigated. The reaction solutions were monitored using UV-Vis spectroscopy, the size and shape of crystals were determined by scanning electron microscopy and transmission electron microscopy, the crystalline phases of AgNPs were presented by X–ray diffraction, and the relation of nanoparticles with Fortunella Japonica extract was confirmed using fourier transform infrared spectroscopy. The results indicated that no formation of AgNPs had taken place in the dark during 24 hours at room temperature and 40 oC. Meanwhile, it was found that the rate of AgNPs formation increased rapidly under the sunlight. The effects of the synthesis factors on the AgNPs formation were investigated. The suitable conditions for the synthesis of AgNPs using F.J. extract were determined as follows: F.J. extract was mixed with AgNO3 1.75 mM solution with the volume ratio of 3.5 AgNO3 solution/1.5 F.J. Extract, stirred 300 rpm for 150 minutes at 40 oC under sunlight illumination. At these conditions, AgNPs showed high crystalline structure with the average size of 15.9 nm. The antibacterial activity of silver nanoparticles was determined by agar well diffusion method against E. coli and B. subtilis bacteria. The green synthesized AgNPs performed high antibacterial activity against both bacteria.

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Section: Effect Of Sunlight On the Synthesis Of Agnpsmentioning

confidence: 99%

Fortunella japonica extract as a reducing agent for green synthesis of silver nanoparticles

Anh

Linh

et al. 2018

IJET

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“…Meanwhile, it was found that the rate of AgNPs formation increased with the presence of sunlight in 120 minutes, the band indicating AgNPs of the range of 400450 nm was observed. According to authors, 18) the formation of silver nanoparticles under sunlight took place in four main steps: The first step was the photo-activation including the photosensitization of polyphenolic compounds (flavonoids) present in the extract. After the reactant mixture was exposed to sunlight, the flavonoid molecules absorbed the photons and got excited.…”

Section: Biosynthesis Of Agnpsmentioning

confidence: 99%

Biosynthesis, Characteristics and Antibacterial Activity of Silver Nanoparticles Using <i>Lemon Citrus Latifolia</i> Extract

Linh

Anh

et al. 2018

Mater. Trans.

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Silver nanoparticles (AgNPs) were synthesized from aqueous AgNO 3 precursor via an effective and ecofriendly method using Lemon Citrus Latifolia (LCL) extract as the reducing and stabilizing agent under sunlight condition. The AgNPs formation was confirmed by ultraviolet-visible absorption spectroscopy at the wavelength of 400450 nm. The appropriate conditions and positive effect of direct sunlight on the AgNPs preparation were revealed clearly. The synthesized AgNPs were characterized using multitechniques X-ray diffraction revealed that AgNPs had the crystalline nature of face-centered cubic structure. Scanning electron microscopy and transmission electron microscopy showed the obtained AgNPs was spherical and the size distribution was uniform with the nanosize of 424 nm. The obtained AgNPs solution showed an effective antibacterial activity against E. coli, B. subtilis and B. cereus with the average diameter of inhibition zones over 15 mm.

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“…A myriad of applications of zero-valent silver nanoparticles (ZVSNPs) in various fields of science and technology have made many scientists to indulge in the research of this surging area. A few of the appealing applications include antibacterial [1], antioxidant [2,3], anticancer [4,5], anticoagulant [6], larvicidal [7], antileishmanial [8][9][10], bioimaging [11], biosensor [12,13] and pollutant removal [14,15].…”

Section: Introductionmentioning

confidence: 99%

Antibacterial and dye degradation potential of zero‐valent silver nanoparticles synthesised using the leaf extract of Spondias dulcis

Yadav

Manjunath

Selvaraj

2018

IET nanobiotechnol.

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The present study reports a simple and low cost synthesis of zero-valent silver nanoparticles (ZVSNPs) from silver nitrate using the leaf extract of Spondias dulcis. The ZVSNPs showed a unique peak at 420 nm in UV-vis spectrum. The SEM image portrayed cuboidal shaped particles. The EDX spectrum designated the elemental silver peak at 3 keV. In XRD, a sharp peak at 32.47° denoted the existence of (1 0 1) lattice plane and the average crystallite size was calculated as 48.61 nm. The lattice parameter was determined as 0.39 nm. The FTIR spectra of the leaf extract and ZVSNPs showed shifts in the specific functional group bands which ascertained the involvement of phytoconstituents in the formation and capping of nanoparticles. The average hydrodynamic size was measured as 59.66 nm by DLS method. A low PDI, 0.187 witnessed the monodispersity. A negative zeta potential value of −15.7 mV indicated the negative surface charges of the nanoparticles. The bactericidal action of ZVSNPs was demonstrated against two pathogens S.typhimurium and E.coli during which a dosage dependent zone of inhibition results was observed. Additionally, the catalytic potential of ZVSNPs was examined for the degradation of methylene blue dye in which an accelerated degradation of the dye was observed.

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Photoinduced green synthesis of silver nanoparticles with highly effective antibacterial and hydrogen peroxide sensing properties

Cited by 44 publications

References 50 publications

Fortunella japonica extract as a reducing agent for green synthesis of silver nanoparticles

Fortunella japonica extract as a reducing agent for green synthesis of silver nanoparticles

Biosynthesis, Characteristics and Antibacterial Activity of Silver Nanoparticles Using <i>Lemon Citrus Latifolia</i> Extract

Antibacterial and dye degradation potential of zero‐valent silver nanoparticles synthesised using the leaf extract of Spondias dulcis

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