Green Synthesis, Characterization, and Antibacterial Activity of Silver/Polystyrene Nanocomposite

Awad, Manal A.; Mekhamer, W.K.; Merghani, Nada M.; Hendi, Awatif A.; Ortashi, Khalid M. O.; Al-Abbas, Fatimah; Eisa, Nada E.

doi:10.1155/2015/943821

Cited by 29 publications

(18 citation statements)

References 18 publications

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“…Our results are supported by different reported studies with sharp peaks at 3 keV in EDX (34)(35)(36)(37). As these AgNPs were synthesized with different plant materials, Acacia nilotica, Citrus sinensis, Cosmos Sulphureus, and Dracocephalum moldavica, still the resultant Ag availability was determined at around 3 keV through EDX analysis.…”

Section: Edx Detectionsupporting

confidence: 92%

Pinus wallichiana-synthesized silver nanoparticles as biomedical agents: in-vitro and in-vivo approach

Khan

Nadhman

et al. 2020

Green Chemistry Letters and Reviews

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The current study aims to assess the aqueous extract of Pinus wallichiana stem for the synthesis of small spherical-shaped (10-30 nm) silver nanoparticles (AgNPs) and their in-vitro and in-vivo biomedical applications. The biosynthesized AgNPs were nonmutagenic and safe at all test doses as per Ames and acute toxicity assay (20, 40, 60, and 80 mg/kg). The percent writhing inhibitory effect generated by AgNPs was 42.51, 50.84, and 59.06 at test doses of 10, 20, and 30 mg/kg, respectively. The percent decreased in gastrointestinal tract motility observed was 41.34%, 32.69%, and 28.48% at 10, 20, and 30 mg/kg, respectively. They also showed a significant antipyretic effect after 1, 2, and 3 h in comparison to normal saline. The AgNPs of P. wallichiana showed good antibacterial activity against Acinetobacter baumannii (60% with MIC 50 = 2.36 mg/ ml and MBC = 5.0 mg/ml). These nanoparticles also possessed good antioxidant activity of 61.77 ± 0.828% and 70.25 ± 0.56% at 400 and 500 µg/ml, respectively and lack phytoagglutinin potential. Because of their high potency as biomedical agents, these nanoparticles can be a good alternative to the currently available drugs and approaches.

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Section: Edx Detectionsupporting

confidence: 92%

Pinus wallichiana-synthesized silver nanoparticles as biomedical agents: in-vitro and in-vivo approach

Khan

Nadhman

et al. 2020

Green Chemistry Letters and Reviews

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“…4b, broad and intensified peak at 3421.92 cm −1 indicated the O-H group stretching of phenolic group present in the orange leaf extract. Sharp peaks at 1642 and 1598 cm −1 were due to C = C stretching, this group must be present in flavonoids and monoterpenes (Awad et al 2014) and amide group in proteins. Peak at 1085 and 1047.57 cm −1 indicated C-O stretching in primary and secondary alcohols, respectively (Khalil 2014).…”

Section: Ft-irmentioning

confidence: 96%

Microwave-assisted synthesis of silver nanoparticles from Origanum majorana and Citrus sinensis leaf and their antibacterial activity: a green chemistry approach

Singh

Rawat

Isha

2016

Bioresour. Bioprocess.

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Background: Silver nanoparticles (SNPs) play important role in the field of optics and electronics and also as a novel antibacterial agents. Here, we report a simple and green method for the biosynthesis of SNPs using aqueous leaf extract of Origanum majorana and Citrus sinensis as a novel bio source of cost-effective, non-hazardous reducing, and stabilizing agents. A 3 mM solution of silver nitrate was prepared. Five milliliter aqueous leaf extract was slowly added to 20 ml silver salt solution (3 mM) with constant stirring. No noticeable color change was observed. The solution was then heated in domestic microwave for variable time intervals. The intense brown colored solution was obtained on 1 min heating with O. majorana and 5 min heating with C. sinensis extract. The intense brown color indicated the formation of SNPs. The antibacterial activity of synthesized SNPs was investigated.Results: SNPs were rapidly synthesized using aqueous leaf extract of O. majorana and C. sinensis on microwave irradiation. Formation of SNPs was confirmed by the change in color from yellowish green to brown and absorption maximum around ~420 and 410 nm due to surface plasmon resonance of SNPs. They were also characterized by other physical-chemical techniques like Fourier transform infrared spectroscopy (FT-IR), scanning electron microscope coupled with X-ray energy dispersive spectroscopy, and high-resolution transmission electron microscopy. TEM analysis showed the presence of feather-shaped NPs in O. majorana and spherical as well as cubical-shaped NPs in C. sinensis-mediated SNPs. The synthesized SNPs showed significance antibacterial activity against two human pathogenic strains. Conclusion:The SNPs were synthesized using leaf extract of plants. This synthesis method is nontoxic, eco-friendly, and a low-cost technology for the large-scale production. The SNPs can be used as a new generation of antibacterial agents.

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“…The amorphous halo was caused by the spacing of individual polymer chains. Comparison of the diffraction patterns of PMMA and greener AgNP/PMMA nanocomposite showed that the peaks corresponding to PMMA became broader and seemed to disappear because of small AgNPs embedded in the PMMA chains [26].…”

Section: And 3(b)mentioning

confidence: 99%

“…International Journal of Polymer Science AgNP/polymer nanocomposite film is valuable in many industrial applications. The technique permits the utilization of a nontoxic, cheap, ecofriendly, bioavailable material [26].…”

mentioning

confidence: 99%

Greener Synthesis, Characterization, and Antimicrobiological Effects of Helba Silver Nanoparticle-PMMA Nanocomposite

Awad

Hendi

Ortashi

et al. 2019

International Journal of Polymer Science

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Nanocomposites are characterized as a multiphase material where one of the phases has a dimension in the nanoscale. There has been huge enthusiasm for the commercialization of nanocomposites for an assortment of uses including medicinal, electronic, and basic. The general motivation behind this study was on the development of silver nanoparticles, due to the present enthusiasm encompassing these metals due to their exceptional properties which are not quite the same as the relating bulk material. A novel, simple, cost-effective, nontoxic, and environmentally friendly technique was developed for synthesizing silver nanoparticle- (AgNP-) poly(methyl methacrylate) (PMMA) nanocomposite using Trigonella foenum-graecum (Helba) aqueous extract. UV-visible spectroscopic analysis was carried out to assess the formulation of AgNPs. The particle size distribution of AgNPs was determined by dynamic light scattering (DLS). The average size of green AgNPs was about 83 nm. Images of spherical green nanoparticles were characterized using transmission electron microscopy (TEM). The resultant green AgNPs were added slowly to polymer (PMMA) solution. The AgNPs encapsulated within the polymer chains were characterized by X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). Modification of thermal stabilities of AgNP/PMMA nanocomposites was confirmed using thermogravimetric analysis (TGA). The green AgNP/PMMA nanocomposites showed improved thermal stabilities. The green AgNP/PMMA nanocomposite film proved antimicrobial in water microbiological testing. Thus, the key findings of the work include the use of a safe and simple nanocomposite, which had marked antibacterial activity and potential application in water filtration.

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Green Synthesis, Characterization, and Antibacterial Activity of Silver/Polystyrene Nanocomposite

Cited by 29 publications

References 18 publications

Pinus wallichiana-synthesized silver nanoparticles as biomedical agents: in-vitro and in-vivo approach

Pinus wallichiana-synthesized silver nanoparticles as biomedical agents: in-vitro and in-vivo approach

Microwave-assisted synthesis of silver nanoparticles from Origanum majorana and Citrus sinensis leaf and their antibacterial activity: a green chemistry approach

Greener Synthesis, Characterization, and Antimicrobiological Effects of Helba Silver Nanoparticle-PMMA Nanocomposite

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