Green synthesis of silver nanoparticles using grape seed extract and their application for reductive catalysis of Direct Orange 26

Yao, Ping; Zhang, Jun; Xing, Tieling; Chen, Guoqiang; Tao, Ran; Choo, Kwang‐Ho

doi:10.1016/j.jiec.2017.09.009

Cited by 100 publications

(30 citation statements)

References 51 publications

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“…The evidence indicate that polyphenolic compounds available in plant extracts are potential reducing agents for silver ions and can be used in the production of nano silver particles via a process known as green synthesis [ 55 ]. GSE was successfully used for this purpose [ 56 , 57 ], but these nanoparticles are extremely unstable and must be capped with appropriate capping agents to provide stability and prevent agglomeration. Otherwise, silver would go through a reaction to form silver compounds, such as Ag 2 O.…”

Section: Discussionmentioning

confidence: 99%

Effect of silver diamine fluoride and proanthocyanidin on resistance of carious dentin to acid challenges

et al. 2020

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The aim of this study was to evaluate the effect of silver diamine fluoride and grape seed extract on the microstructure and mechanical properties of carious dentin following exposure to acidic challenge. Ninety-eight molars with occlusal caries were used. In the control group the specimens were kept in distilled water. In the GSE group, the specimens were immersed in 6.5% grape seed extract solution for 30 minutes. In the SDF group, the specimens were immersed in 30% SDF solution for 4 minutes. In the GSE+SDF group, the specimens were immersed in 6.5% grape seed extract solution for 30 minutes and then exposed to 30% SDF solution for 4 minutes. All the groups underwent pH cycling model for 8 days. Microhardness measurements were taken at the baseline before surface treatments and after pH cycling. Elastic modulus was measured, after pH cycling. In the control group, the final hardness was significantly lower than the initial hardness (P = 0.001). In the SDF group, the final hardness was significantly higher than the initial hardness (P < 0.001). There was no significant difference between the initial and final hardness values in the GSE and GSE + SDF groups (p = 0.92, p = 0.07). The H 1-H 0 in the SDF group was significantly higher than the other groups (P<0.05). Moreover, elastic modulus of the experimental groups except GSE+SDF group was significantly higher than control. The highest mean elastic modulus was detected in the SDF group (P<0.001). The use of SDF and GSE prior to the acid challenge improved mechanical properties. Microstructural investigation, using scanning electron microscope showed dentin structure protection against acid challenges with SDF treatment and collagen matrix stabilization with GSE treatment. However combined use of these agents was not beneficious.

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Section: Discussionmentioning

confidence: 99%

Effect of silver diamine fluoride and proanthocyanidin on resistance of carious dentin to acid challenges

et al. 2020

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“…Arunachalam et al (2012) used the leaf extract of Coccina grandis to successfully synthesize AgNPs with suitable activity for the degradation of Coomassie Brilliant Blue under UV light [17]. Extracts of plants and their seeds contain various natural antioxidants, generally, these biomolecules and metabolites can act as reducing and capping agents for biogenic synthesis of metal nanoparticles [18,19]. Plant extract-mediated synthesis of AgNPs are significant for its rapid rate of synthesis, simplicity, and eco-friendliness.…”

Section: Introductionmentioning

confidence: 99%

Green Biosynthesis of Silver Nanoparticles Using Eriobotrya japonica (Thunb.) Leaf Extract for Reductive Catalysis

Tang

Liu

et al. 2019

Materials

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This article reports on silver nanoparticles (AgNPs) that were green-synthesized by using Eriobotrya japonica (Thunb.) leaf extract and their use for the catalytic degradation of reactive dyes. The properties of biogenic AgNPs were characterized using UV-vis absorption spectroscopy, field emission scanning electron microscope (FESEM), X-ray powder diffraction (XRD), transmission electron microscope (TEM), Fourier transforming infrared spectroscopy (FTIR), energy dispersive X-ray spectroscopy (EDS), and selected area electron diffraction (SAED) analysis. The UV-vis spectroscopy and X-ray analyses confirmed the formation of AgNPs and showed the strong absorbance around 467 nm with surface plasmon resonance (SPR). The mean diameter of biogenic AgNPs at room (20 °C), moderate (50 °C), and high temperatures (80 °C) were 9.26 ± 2.72, 13.09 ± 3.66, and 17.28 ± 5.78 nm, respectively. The reaction temperature had significant impacts on the sizes of synthesized AgNPs. The higher the synthesis temperature, the larger size and the lower catalysis activity for reductive decomposition of reactive dyes via NaBH4. The results supported a bio-green approach for developing AgNPs with a small size and stable degradation activity of reactive dyes over 92% in 30 min by using Eriobotrya japonica (Thunb.) leaf extract at pH 7, 20 °C, and 1:10 ratio of silver nitrate added to the leaf extract.

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“…When the UV-vis spectra were taken into consideration, the basic medium was chosen for the synthesis of AgNPs, since smaller nanoparticles were obtained in the basic medium compared to the acidic medium. Although silver nanoparticles can be synthesized both at low temperature (25°C) and high temperature (85°C) in basic medium, it was seen that temperature directly affected particle size of these metal nanoparticles [39]. It was found that these nanostructures were more prone to agglomeration because more than one nucleus formed in the reduction of Ag 1+ to Ag 0 at the same time at high temperature.…”

Section: Fesem Tem Images and Particle Size Distributionsmentioning

confidence: 99%

Biosynthesis of silver nanoparticles using Onosmasericeum Willd. and evaluation of their catalytic properties and antibacterial and cytotoxic activity

Çalhan

Gündoğan

2020

Turk J Chem

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In this study, silver nanoparticle (AgNP) synthesis was carried out using Onosma sericeum Willd aqueous extract for the first time, with a simple, economical, and green method without the need for any other organic solvent or external reducing or stabilizing agent. A variety of AgNPs, all of different particle sizes, were synthesized by controlling the silver ion concentration, extract volume, temperature, and pH. It was determined that the optimum conditions for AgNP synthesis were 1mM AgNO3, pH 8, 25 ˚C, 20 g / 200 mL extract, silver nitrate and extract ratio 5: 1 (v / v). The AgNPs were defined using UV-vis spectroscopy, field emission scanning electron microscopy (FESEM), energy dispersive X-ray analysis (EDAX), transmission electron microscopy (TEM), and X-ray diffraction (XRD). The particle size distribution and zeta potential measurements of the AgNPs were measured using the dynamic light scattering (DLS) technique. It was determined that the AgNPs with a particle size of less than 10 nm showed a higher catalytic effect in the reduction of 2-nitrobenzenamine. It was also found that these nanoparticles had a cytotoxic effect on the MCF-7 breast cancer cell line 2 depending on dosage and time. The resulting IC50 values were between 76.63 µg/mL and 169.77 µg/mL. Furthermore, the biosynthesized AgNPs showed effective antibacterial activity against the Acinetobacter baumannii bacteria. The results of the study showed that synthesized AgNPs can have a promising role in biomedical and nanobiotechnology applications.

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Green synthesis of silver nanoparticles using grape seed extract and their application for reductive catalysis of Direct Orange 26

Cited by 100 publications

References 51 publications

Effect of silver diamine fluoride and proanthocyanidin on resistance of carious dentin to acid challenges

Effect of silver diamine fluoride and proanthocyanidin on resistance of carious dentin to acid challenges

Green Biosynthesis of Silver Nanoparticles Using Eriobotrya japonica (Thunb.) Leaf Extract for Reductive Catalysis

Biosynthesis of silver nanoparticles using Onosmasericeum Willd. and evaluation of their catalytic properties and antibacterial and cytotoxic activity

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