Possibilities of obtaining nickel nanoparticles in an aqueous medium using laser action

Goncharov, V. K.; Kozadaev, K. V.; Markevich, M. I.; Puzyrev, M. V.; Slavashevich, D. L.; Chaplanov, A. M.

doi:10.1007/s10891-008-0026-3

Cited by 3 publications

(1 citation statement)

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“…Depending on the goals for obtaining the metal nanoparticles, very different methods can be used: chemical reduction of metals in solutions of their salts [1], implantation of metal ions in a matrix [2], electrical discharge (spark [3] and arc [4]) between metal electrodes in liquids, laser ablation in liquid media [5] and in the atmosphere [6]. Accordingly, adequate measurement of such a critical parameter as the effective sizes of the nanosized particles obtained becomes more important.…”

Section: Introductionmentioning

confidence: 99%

Combination method for monitoring the characteristics of aqueous suspensions of metallic nanoparticles

et al. 2008

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We have used a combination of physical diagnostics methods (laser probe, absorption spectroscopy, transmission electron microscopy) to study an aqueous suspension of silver nanoparticles, formed by laser ablation of a metal target in the atmosphere. We have established that application of the methods described allows us to obtain the most complete information about the state of nanosized metal particles in optically transparent media.Key words: aqueous suspension of metal nanoparticles, laser ablation, laser probe, absorption spectroscopy, atomic force microscopy, transmission electron microscopy, surface plasmon resonance. Introduction.A direction in science and technology that has been very much in demand in recent years is associated with preparation of nanostructural materials and their adoption in various areas of the national economy. The range of potential applications of such materials is quite broad: from pharmaceuticals to electronics. Such interest in nanotechnologies is due to the specific properties of nanostructures. The range of potential applications of such materials is quite broad: from pharmaceutical science to electronics. Such interest in nanotechnologies is due to the specific properties of nanostructures. For example, the mechanical, electrical, magnetic, optical, and chemical properties of many metals change substantially on going to nanostructures.Depending on the goals for obtaining the metal nanoparticles, very different methods can be used: chemical reduction of metals in solutions of their salts [1], implantation of metal ions in a matrix [2], electrical discharge (spark [3] and arc [4]) between metal electrodes in liquids, laser ablation in liquid media [5] and in the atmosphere [6]. Accordingly, adequate measurement of such a critical parameter as the effective sizes of the nanosized particles obtained becomes more important.This work was devoted to study of the possibility of combining existing methods for diagnostics of smallsized metallic systems with the goal of obtaining reliable information on the presence of metal nanoparticles and their sizes in optically transparent media. As the object of study, we used an aqueous suspension of silver nanoparticles obtained by laser ablation of the metal in the atmosphere by exposure to single pulses of high-power laser radiation in the frequency mode.The Experiment. Preparation of the suspensions of silver nanoparticles (laser ablation in the atmosphere). As we know, when a metal is exposed to laser radiation of moderate power density (10

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Section: Introductionmentioning

confidence: 99%

Combination method for monitoring the characteristics of aqueous suspensions of metallic nanoparticles

et al. 2008

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Morphology and Structure of Coatings Obtained by Laser Ablation of Rare-Earth Metals

Anufrick,

Kurian,

Sergienko

et al. 2024

J Appl Spectrosc

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Antibacterial properties of nickel and aluminum nanoparticles

Dovnar,

Smotryn,

Anufrik

et al. 2024

Dokl. Akad. nauk

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The high level of polyantibiotic resistance of pathogenic bacteria dictates the need to search for and develop new classes of substances that have a different mechanism of action compared to antibiotics. As alternatives, metal nanoparticles can be considered, especially if an environmentally friendly method of production is used in the process of creating the latter. Nickel and aluminum nanoparticles were synthesized by the laser ablation method in liquid, which belongs to the “green” chemistry methods. The optical, structural, and morphological properties of the synthesized nanoparticles were studied using a spectrophotometer, atomic force and transmission electron microscopy, respectively. The antibacterial properties of nickel and aluminum nanoparticles were analyzed on the example of two strains of Gram-positive, five strains of Gram-negative bacteria. The performed studies have shown that nickel nanoparticles have characteristic absorption maxima in the middle ultraviolet (285 nm) and red (750 nm) regions of the spectrum, the optical density spectrum of a colloidal solution of aluminum nanoparticles does not have pronounced maxima. Atomic force and transmission electron microscopy revealed that the nanoparticles of the studied metals are predominantly spherical in shape and their diameters correspond to the range (20–60 nm). At the same time, in an insignificant amount, individual conglomerates (≥100 nm in size) are observed. The performed bacteriological studies have revealed the presence of pronounced antimicrobial properties in nickel and aluminum nanoparticles in relation to the most common clinical pathogenic strains of both Gram-positive and Gram-negative microorganisms. Nickel and aluminum nanoparticles synthesized by the laser ablation method in liquid are characterized by a relatively uniform shape, a small scatter in size, and have an antibacterial effect against the most common clinical pathogenic microbial strains, which makes them a unique class of substances in terms of developing new ways to combat antibiotic resistance in medicine, in general, and in surgery, in particular.

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Possibilities of obtaining nickel nanoparticles in an aqueous medium using laser action

Cited by 3 publications

References 1 publication

Combination method for monitoring the characteristics of aqueous suspensions of metallic nanoparticles

Combination method for monitoring the characteristics of aqueous suspensions of metallic nanoparticles

Morphology and Structure of Coatings Obtained by Laser Ablation of Rare-Earth Metals

Antibacterial properties of nickel and aluminum nanoparticles

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