Controlled nucleation and growth of micrometre-size copper particles prepared by the polyol process

Fiévet, Fernand; Fiévet-Vincent, Françoise; Lagier, Jean-Pierre; Dumont, B.; Figlarz, M.

doi:10.1039/jm9930300627

Cited by 137 publications

(76 citation statements)

References 6 publications

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“…7 The chemical methods involve the precipitation of the metallic components from their respective solutions, 8 followed by gas reduction using C, CO, or H 2 , [8][9][10] as well as the polyol method. [11][12][13][14] Among the different processing methods, the polyol method has been proven to be highly reliable for the synthesis of metallic nanoparticles. However, most published works have been focused on the synthesis itself and on the processed nanomaterials.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of silver nanocrystals by a modified polyol method

Bregado-Gutiérrez¹,

Saldívar-García²,

López³

2007

J of Applied Polymer Sci

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A modification of the polyol method has been shown to result in improved efficiency and enhanced kinetics for the synthesis of silver nanocrystals when compared with the traditional polyol method. The Ag nanocrystals produced were characterized using Xray diffraction and transmission electron microscopy. Accordingly, the exhibited Ag crystal structure, corresponding lattice constants, and resultant particle sizes were determined by these means. In addition, using Fourier transform infrared spectroscopy, it was found that a solid-state reaction between the AgNO 3 and the Poly (vinylpyrrolidone) (PVP) takes place prior to their dissolution in ethylene glycol. Moreover, when crystals grow under total rest conditions, they do not develop a spherical morphology as in the traditional polyol method, but a well-defined geometric shape showing preferential crystallographic growth directions. Under the experimental conditions of this work, the exhibited nanocrystal shapes were quasi-planar hexagonal. Apparently, PVP interacts with the FCC crystal structure promoting growth on the {100} preferential direction by playing the role of an atomic arranger.

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Section: Introductionmentioning

confidence: 99%

Synthesis of silver nanocrystals by a modified polyol method

Bregado-Gutiérrez¹,

Saldívar-García²,

López³

2007

J of Applied Polymer Sci

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“…Pastoriza-Santos and LizMarzan have shown the impact of temperature on the reaction rate and consequently on particle formation [25,37]. The so-called polyol-process uses ethylene glycol as both reducing agent and solvent, the reaction is carried out at 1608C using Ag nitrate as the Ag source [28,38]. Sun and Xia showed in 2002 how this reaction can be tuned by adapting the reaction parameters.…”

Section: Production and Characteristics Of Ag Nanoparticlesmentioning

confidence: 99%

“…This reduction is often accomplished using a chemical reducing agent [27][28][29] but also via electrochemical [23,30] or photochemical reduction [31,32].…”

Section: Production and Characteristics Of Ag Nanoparticlesmentioning

confidence: 99%

Bioavailability of silver nanoparticles and ions: from a chemical and biochemical perspective

Behra

Sigg

Clift

et al. 2013

J. R. Soc. Interface.

286

184

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Owing to their antimicrobial properties, silver nanoparticles (NPs) are the most commonly used engineered nanomaterial for use in a wide array of consumer and medical applications. Many discussions are currently ongoing as to whether or not exposure of silver NPs to the ecosystem (i.e. plants and animals) may be conceived as harmful or not. Metallic silver, if released into the environment, can undergo chemical and biochemical conversion which strongly influence its availability towards any biological system. During this process, in the presence of moisture, silver can be oxidized resulting in the release of silver ions. To date, it is still debatable as to whether any biological impact of nanosized silver is relative to either its size, or to its ionic constitution. The aim of this review therefore is to provide a comprehensive, interdisciplinary overview-for biologists, chemists, toxicologists as well as physicists-regarding the production of silver NPs, its (as well as in their ionic form) chemical and biochemical behaviours towards/within a multitude of relative and realistic biological environments and also how such interactions may be correlated across a plethora of different biological organisms.

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“…Therefore, it is obvious that the higher the NaOH concentration added, the higher the rate of reaction increased. Several researchers pointed out that raising the pH value resulted in increasing the rate of reaction in polyol process [14,15]. Table 1.…”

Section: The Effect Of Naoh Concentrationmentioning

confidence: 99%

Preparation of Ultrafine Copper Powders with Controllable Size via Polyol Process with Sodium Hydroxide Addition

Chokratanasombat

Nisaratanaporn

2012

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Abstract.A facile polyol process for producing copper powders with controllable size is described here. The copper powders have been readily synthesized by the reduction of copper (II) nitrate trihydrate with the solution of glycerol and sodium hydroxide. The X-ray diffraction, SEM and FESEM were used to characterize the obtained copper powders. The effect of the concentration of NaOH and the reaction temperature were investigated. The sizes and the complete reaction time of the copper powders were decreased at the condition of increasing the concentration of NaOH and the reaction temperature. For example, at the constant reaction temperature of 140 °C, the sizes of the obtained powders of the molar ratio of NaOH:Cu(NO3)2 range from 2:1 to 5:1 were decreased from 1.40 to 0.10 µm as well as the complete reaction times which were reduced from 240 to 17 minutes, respectively. By controlling the process parameters the uniform nano-sized copper powders could be achieved at the optimal condition.

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Controlled nucleation and growth of micrometre-size copper particles prepared by the polyol process

Cited by 137 publications

References 6 publications

Synthesis of silver nanocrystals by a modified polyol method

Synthesis of silver nanocrystals by a modified polyol method

Bioavailability of silver nanoparticles and ions: from a chemical and biochemical perspective

Preparation of Ultrafine Copper Powders with Controllable Size via Polyol Process with Sodium Hydroxide Addition

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