Photochemical synthesis of silver particles using water-in-ionic liquid microemulsions in high-pressure CO2

Harada, Masafumi; Kawasaki, Chika; Saijo, Kenji; Demizu, Masashi; Kimura, Yoshifumi

doi:10.1016/j.jcis.2009.11.066

Cited by 31 publications

(15 citation statements)

References 45 publications

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“…Green synthesis of AgNPs has become very important in the recent years. Green AgNPs have the potential for large scale applications in the formulation of dental resin composites, bone cement [19,20], water and air filters [21,22], clothing and textiles, medical devices and implants [23], cosmetics [4], and packaging [24]. Besides their antimicrobial properties, AgNPs and silver nanocomposites have other interesting characteristics which will further enable them to be used in catalysts, biosensors, conductive inks, and electronic devices [25,26].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of silver nanoparticles using seed exudates of Sinapis arvensis as a novel bioresource, and evaluation of their antifungal activity

Khatami

Pourseyedi

Khatami³

et al. 2015

Bioresour. Bioprocess.

122

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Background: In general, silver nanoparticles (AgNPs) are particles of silver with a size less than 100 nm. In recent years, synthesis of nanoparticles using plant extract has gained much interest in nanobiotechnology. In this concern, this study investigates green synthesis of AgNPs from silver nitrate using Sinapis arvensis as a novel bioresource of cost-effective nonhazardous reducing and stabilizing compounds. A stock solution of silver nitrate (0.1 M) was prepared. Different concentrations of silver nitrate (1, 2.5, 4, and 5 mM) were prepared from the above solution, then added to 5 mL of S. arvensis seed exudates. The mixtures were kept in 25°C. The synthesis of AgNPs was confirmed by the change in mixtures color from light yellow to brown. The antifungal activity of synthesized AgNPs was investigated in vitro. Results: The resulting AgNPs were characterized by UV-vis spectroscopy, X-ray diffraction (XRD), transmission electron microscopy (TEM), and Fourier transform infrared spectroscopy (FTIR). Formation of the AgNPs was confirmed by the change in mixture color from light yellow to brown and maximum absorption at 412 nm due to surface plasmon resonance of AgNPs. The role of different functional groups in the formation of AgNPs was shown by FTIR. X-ray diffraction was shown that the AgNPs formed in our experiments were in the form of nanocrystal, and TEM analysis showed spherical particles with an average size of 14 nm. Our measurements indicated that S. arvensis seed exudates can mediate facile and eco-friendly biosynthesis of colloidal-spherical AgNPs with a size range of 1 to 35 nm. The synthesized AgNPs showed significance antifungal activity against Neofusicoccum parvum cultures. Conclusion: The AgNPs were synthesized using a biological source. This synthesis method is nontoxic, eco-friendly, and a low-cost technology for the large-scale production. The AgNPs can be used as a new generation of antifungal agents.

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Section: Introductionmentioning

confidence: 99%

Synthesis of silver nanoparticles using seed exudates of Sinapis arvensis as a novel bioresource, and evaluation of their antifungal activity

Khatami

Pourseyedi

Khatami³

et al. 2015

Bioresour. Bioprocess.

122

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show abstract

“…The development of toxicity-free metal nanoparticles has become a great challenge in recent times. Various chemical and physical methods have been employed to prepare silver nanoparticles with different sizes and shapes, such as UV irradiation [16], microware irradiation [17], chemical reduction [18], photochemical method [19], electron irradiation [20], and sonoelectrochemical method [21]. However, most of the reported methods involve more than one step, high energy requirement, low material conversions, difficulty in purification, and hazardous chemicals [22].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Silver Nanoparticles Using Triticum aestivum and Its Effect on Peroxide Catalytic Activity and Toxicology

Waghmode

Chavan

Kalyankar

et al. 2013

Journal of Chemistry

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The synthesis of stable silver nanoparticles using bioreduction method was investigated. Biological synthesis of silver nanoparticles usingTriticum aestivum(khapali ghahu) extract was investigated. The effect of a specific variety of plants and how it affects the growth of silver nanoparticles was investigated in our work and it was polydispersed. UV-visible spectroscopy was used to monitor the formation of silver nanoparticles within 15 minutes. The peaks in XRD pattern are in good agreement with those of face-centered-cubic form of metallic silver. Further the IR and TEM shows confirmation of nanocrystalline nature of silver nanoparticles. These nanoparticles dislodged by ultrasonication showed an absorption peak at 430 nm in UV-visible spectrum corresponding to the Plasmon resonance of silver nanoparticles. UV-visible titration experiments showed evidence that silver nanoparticles facilitate hydrogen peroxide reduction showing excellent catalytic activity at 200 μL. In this preliminary toxicology study, Earthworm toxicology we checked and is stable up to 1500 ppm concentration. The use of plant extract for silver nanoparticles synthesis offers the benefits of eco-friendliness and amenability for large-scale production.

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“…The primary challenge in this focal area is the maximization of the usage of environmental friendly materials in the generation of metal nanoparticles. Various chemical and physical methods have been employed to prepare silver nanoparticles with different sizes and shapes, such as UV irradiation, 1,2 microware irradiation, 3,4 chemical reduction, [5][6][7] photochemical method, 8,9 electron irradiation, 10,11 and sonoelectrochemical method. 12 However, most of the reported methods involve more than one step, high energy requirement, low material conversions, difficulty in purification, and hazardous chemicals.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of silver nanoparticles by using tea leaf extract from Camellia Sinensis

Loo¹,

Chieng²,

Nishibuchi³

et al. 2012

IJN

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Abstract:The development of the biological synthesis of nanoparticles using microorganisms or plant extracts plays an important role in the field of nanotechnology as it is environmentally friendly and does not involve any harmful chemicals. In this study, the synthesis of silver nanoparticles using the leaves extract of Chinese tea from Camellia sinensis is reported. The synthesized nanoparticles were characterized using UV-vis spectroscopy, X-ray diffraction (XRD), transmission electron microscopy (TEM), and Fourier transform infrared (FTIR) spectroscopy. The XRD analysis shows that the synthesized silver nanoparticles are of facecentered cubic structure. Well-dispersed silver nanoparticles with an approximate size of 4 nm were observed in the TEM image. The application of the green synthesized nanoparticles can be used in many fields such as cosmetics, foods, and medicine.

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Photochemical synthesis of silver particles using water-in-ionic liquid microemulsions in high-pressure CO2

Cited by 31 publications

References 45 publications

Synthesis of silver nanoparticles using seed exudates of Sinapis arvensis as a novel bioresource, and evaluation of their antifungal activity

Synthesis of silver nanoparticles using seed exudates of Sinapis arvensis as a novel bioresource, and evaluation of their antifungal activity

Synthesis of Silver Nanoparticles Using Triticum aestivum and Its Effect on Peroxide Catalytic Activity and Toxicology

Synthesis of silver nanoparticles by using tea leaf extract from Camellia Sinensis

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