Preparation of silver nanoparticles with controlled particle size

Zielińska, Anna; Skwarek, Ewa; Zaleska, Adriana; Gazda, Maria; Hupka, Jan

doi:10.1016/j.proche.2009.11.004

Cited by 272 publications

(145 citation statements)

References 8 publications

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“…The silver nanoparticles stabilized by PVP were prepared according to [11]. Five grams of PVP was dissolved in 250-ml deionized water under stirring at room temperature.…”

Section: Synthesis Of Silver Nanoparticles Via Chemical Reductionmentioning

confidence: 99%

“…The most common method for synthesis of stable AgNps is the chemical reduction of silver ions in different stabilizers such as polymers and surfactants [7][8][9][10][11]. Among them, polyvinylpyrrolidone (PVP) attracts considerable attention because of its excellent chemical and physical properties making it a good material as a coating or as an additive to different materials.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis and comparative study on the antimicrobial activity of hybrid materials based on silver nanoparticles (AgNps) stabilized by polyvinylpyrrolidone (PVP)

et al. 2011

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Hybrid materials based on polyvinylpyrrolidone (PVP) with silver nanoparticles (AgNps) were synthesized applying two different strategies based on thermal or chemical reduction of silver ions to silver nanoparticles using PVP as a stabilizer. The formation of spherical silver nanoparticles with diameter ranging from 9 to 16 nm was confirmed by TEM analysis. UV-vis and FTIR spectroscopy were also applied to confirm the successful formation of AgNps. The antibacterial activity of the synthesized AgNPs/PVP against etalon strains of three different groups of bacteria-Staphylococcus aureus (S. aureus; grampositive bacteria), Escherichia coli (E. coli; gram-negative bacteria), Pseudomonas aeruginosa (P. aeruginosa; nonferment gram-negative bacteria), as well as against spores of Bacillus subtilis (B. subtilis) was studied. AgNps/PVP were tested for the presence of fungicidal activity against different yeasts and mold such as Candida albicans, Candida krusei, Candida tropicalis, Candida glabrata, and Aspergillus brasiliensis. The hybrid materials showed a strong antimicrobial effect against the tested bacterial and fungal strains and therefore have potential applications in biotechnology and biomedical science.

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“…The silver nanoparticles stabilized by PVP were prepared according to [11]. Five grams of PVP was dissolved in 250-ml deionized water under stirring at room temperature.…”

Section: Synthesis Of Silver Nanoparticles Via Chemical Reductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Synthesis and comparative study on the antimicrobial activity of hybrid materials based on silver nanoparticles (AgNps) stabilized by polyvinylpyrrolidone (PVP)

et al. 2011

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“…The colour of metal nanoparticles depends on the shape and size of the nanoparticles and dielectric constant of the surrounding medium. However, only electrons with free electron posses plasmon resonance in the visible spectrum, which give rise to such intense color [39]. Transmission electron microscopy (TEM) was used for visual observation of silver nanoparticles in the present system.…”

Section: Temperature Dependence Of M′ ′ and M″ ″ At Selected Frequenciesmentioning

confidence: 99%

Influence of silver ion reduction on electrical modulus parameters of solid polymer electrolyte based on chitosan-silver triflate electrolyte membrane

Aziz¹,

Abidin²,

Arof³

2010

Express Polym. Lett.

191

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Abstract. The electric modulus properties of solid polymer electrolyte based on chitosan: AgCF3SO3 from 303 to 393 K have been investigated by using impedance spectroscopy. The shift of the M″ peak spectra with frequeny depends on the dissociation and association of ions. The lowest conductivity relaxation time τσ, was found for the sample with the highest conductivity. The real part of electrical modulus shows that the material is highly capacitive. The asymmetric peak of the imaginary part of electric modulus M″, predicts a non Debye type relaxation. The distribution of relaxation times was indicated by a deformed arc form of Argand plot. The increase of M′ and M″ values above 358 K can be attributed to the transformation of silver ions to silver nanoparticles. The complex impedance plots and ultraviolet-visible (UV-vis) absorption spectroscopy indicate the temperature dependent of silver nanoparticles in chitosan-silver triflate solid electrolyte. The formation of silver nanoparticles was confirmed by transmission electron microscopy (TEM). The scaling behavior of M″ spectra shows that the dynamical relaxation processes is temperature independent for aparticular composition. The β exponent value indicate that the conductivity relaxation is highly non exponential.

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“…The most popular methods of obtaining Ag nanoparticles are the methods of chemical and photochemical reduction of AgNO 3 in the presence of the appropriate factors preventing agglomeration [9,10]. Size, shape and stability of nanoparticles can be planned by the selection of appropriate parameters such as initial silver salt and stabilizer concentration, molar ratio of the reducer and silver compound as well as the type of the applied stabilizer [11,12].…”

Section: Introductionmentioning

confidence: 99%

Effect of stabilizer type on the physicochemical properties of poly(acrylic acid)/silver nanocomposites for biomedical applications

Kaczmarek

Metzler

Węgrzynowska-Drzymalska

2016

Polym. Bull.

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Poly(acrylic acid), PAA, has been mixed in solution with silver nanoparticles, obtained by chemical reduction of silver nitrate. Two different sulfurcontaining organic compounds have been used as stabilizers of Ag nanoparticles: mercaptosuccinic acid (MSA) and 3-mercaptopropionic acid (MPA). The formation of Ag nanoparticles has been monitored by UV-Vis spectroscopy. The morphology and composition of obtained nanomaterials has been studied by electron microscopy techniques (SEM/EDX and HR-TEM). Nanomechanical properties of nanocomposites (adhesion and nanohardness) have been investigated by Atomic Force Microscopy (AFM). Thermal stability has been determined using thermogravimetric analysis. The exposure of specimens to UV radiation allowed to observe the changes in the nanoparticle structure and to estimate nanocomposite photostability. MSA has proved to be a better stabilizer of Ag nanoparticles immediately after the synthesis, when MPA provides better storage stability. MPA has allowed for the creation of nanoparticles using mixed reduction (chemical/photochemical) of AgNO 3 . It has been found that the nanocomposite materials are stable for 12 months of storage in solution and in solid form.

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Preparation of silver nanoparticles with controlled particle size

Cited by 272 publications

References 8 publications

Synthesis and comparative study on the antimicrobial activity of hybrid materials based on silver nanoparticles (AgNps) stabilized by polyvinylpyrrolidone (PVP)

Synthesis and comparative study on the antimicrobial activity of hybrid materials based on silver nanoparticles (AgNps) stabilized by polyvinylpyrrolidone (PVP)

Influence of silver ion reduction on electrical modulus parameters of solid polymer electrolyte based on chitosan-silver triflate electrolyte membrane

Effect of stabilizer type on the physicochemical properties of poly(acrylic acid)/silver nanocomposites for biomedical applications

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