Synthesis of metal nanoparticles using laser ablation technique

Ganjali, Monireh; Vahdatkhah, Parisa

doi:10.1016/b978-0-323-51254-1.00019-1

Cited by 21 publications

(11 citation statements)

References 127 publications

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“…On the other hand, the mechanisms of the particle nucleation and growth under specific experimental conditions of the PLAL, including complex chemical reactions between a solid and a liquid, are still under debate. ,− The formation of the primary particles, including plasma formation, cooling, and interaction with the liquid, occurs in a split second and is difficult to study. Generally, it is possible to analyze only the resulting colloidal solution.…”

Section: Introductionmentioning

confidence: 99%

Chemical and Morphological Evolution of Copper Nanoparticles Obtained by Pulsed Laser Ablation in Liquid

et al. 2019

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Pulsed laser ablation in liquid (PLAL) is a promising method to prepare copper/copper oxide nanoparticles (NPs), with the liquid used being an important factor to control their properties. The roles of the species dissolved in the liquid in the course of NP formation during the PLAL as well as the effects of organic solvents in the stabilization of the colloids obtained remain a debate. The peculiarities of the formation and alteration of the particles in ethyl alcohol as well as the effect of low amounts of oxidizing and acid–base species on the composition, structure, morphology, and stability of the NPs in the water colloids are examined. The observed high resistance of Cu NPs toward deep oxidation in ethyl alcohol suspension is shown to be connected with a competitive adsorption mechanism rather than the formation of the carbon shell. Pulsed laser ablation (PLA) of copper in distilled water yields cubic Cu2O NPs, while low amounts of NaOH and H2O2 species change the transformation route of copper NPs in the colloids formed. In the case of H2O2, the primary formation of the sheetlike and flowerlike Cu(OH)2 particles occurs in the course of PLA followed by their pseudomorphous transformation into CuO particles during the suspension aging. The presence of NaOH yields leaflike CuO mesostructures via the tetrahydroxocuprate anion mechanism. On the basis of the results obtained, the schemes for the formation of the particles are proposed.

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Section: Introductionmentioning

confidence: 99%

Chemical and Morphological Evolution of Copper Nanoparticles Obtained by Pulsed Laser Ablation in Liquid

et al. 2019

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“…Pulsed laser ablation method in a liquid environment has been studied as a new alternative to the preparation of nanoparticles without contamination [23][24][25][26][27][28][29]. Moreover, this technique is being widely studied for the practical design of nanoparticle structure, the distribution of size, and morphology by changing experimental parameters such as wavelength, pulse duration, laser fluence, pulse repetition rate, and exposure time.…”

Section: Introductionmentioning

confidence: 99%

Colloidal Metal Oxide Nanoparticles Prepared by Laser Ablation Technique and Their Antibacterial Test

Duque

Madrigal

Riascos

et al. 2019

Colloids and Interfaces

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In this article we report the production of metal oxide (TiFe2O4, ZnFe2O4) nanoparticles by pulsed laser ablation technique in a liquid environment. We used nanosecond Nd: YAG laser systems working at 532 nm and 1064 nm of wavelength and the energy of the laser beam was kept constant at 80 mJ. Absorbance spectra, surface plasmon resonance, optical band-gap, and nanoparticle morphology were investigated using ultraviolet-visible (UV-Vis) spectroscopy, Fourier transform infrared spectroscopy (FTIR), and scanning electron microscopy (SEM). Changing the wavelength of the laser for growth, nanoparticles showed shift between the absorbance and surface plasmon resonance peaks in their UV-Vis spectra, which implies that the optical properties of the colloid nanoparticles depend on laser parameters. This was confirmed with the variation of the band gap energy. Furthermore, redshift for the absorbance peak was observed for samples as-grown at 532 nm around 150 nm as a function of time preparation. Conversely, for the samples as-grown at 1064 nm there was no shift in the absorbance spectra, which could be due to agglomeration and formation of larger particles. The characterization results showed appropriate plasmonic photo-catalysts properties of the particles, hence the photoactivation of the nanoparticles was examined on antibacterial effect using colonies of Staphylococcus aureus and Escherichia coli.

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“…Besides, Laser Ablation Synthesis in Solution (LASiS) is a common and reliable top-down method that provides an alternative solution to the conventional chemical synthesis of metal-based nanoparticles. Also, organic solvents and water can be used in LASiS for NP synthesis and the method can be called as a 'green' process [62,63].…”

Section: Top-down Methodsmentioning

confidence: 99%

Immune System Modulations in Cancer Treatment: Nanoparticles in Immunotherapy

Kızılbey¹,

Türkoğlu²,

Kırmızıtaş³

2021

Cell Interaction - Molecular and Immunological Basis for Disease Management

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Cancer immunotherapy is based on the idea of overcoming the main problems in the traditional cancer treatments and enhancing the patient’s long-term survival and quality of life. Immunotherapy methods aimed to influence the immune system, to detect and eradicate the tumors site and predict the potential results. Nowadays, nanomaterials-based immunotherapy approaches are gaining interest due to numerous advantages like their ability to target cells and tissues directly and reduce the off-target toxicity. Therefore, topics about immune system components, nanomaterials, their usage in immunotherapy and the benefits they provide will be discussed in this presented book chapter. Immunotherapy can be divided into two groups mainly; active and passive immunotherapy including their subtitles such as immune checkpoint inhibitors, adoptive immunotherapy, CAR-T therapies, vaccines, and monoclonal antibodies. Main classification and the methods will be evaluated. Furthermore, state-of-art nanocarriers based immunotherapy methods will be mentioned in detail. The terms of size, charge, material type and surface modifications of the nanoparticles will be reviewed to understand the interference of immune system and nanoparticles and their advantages/disadvantages in immunotherapy systems.

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Synthesis of metal nanoparticles using laser ablation technique

Cited by 21 publications

References 127 publications

Chemical and Morphological Evolution of Copper Nanoparticles Obtained by Pulsed Laser Ablation in Liquid

Chemical and Morphological Evolution of Copper Nanoparticles Obtained by Pulsed Laser Ablation in Liquid

Colloidal Metal Oxide Nanoparticles Prepared by Laser Ablation Technique and Their Antibacterial Test

Immune System Modulations in Cancer Treatment: Nanoparticles in Immunotherapy

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