2020-3-16 · Abstract Nano-sized magnetite powders with addition of iron nitrides were synthesized via pulsed laser ablation (PLA) of an iron target in atmospheric air. A series of iron oxide nanopowders with various phase compositions (ranging from magnetite to hematite) and structures (from 2D lamellas and spherical nanoparticles to continuous 3D structures) were prepared via heat treatment of the ...
2012-5-12 · Laser ablation of iron slug, immersed in 10 ml ultrapure water/chitosan solution, was performed by Nd:YAG pulsed laser (Continuum Surelite III-10, USA), using its second harmonic (532 nm) wavelength and having 4 Hz pulse repetition rate. The iron oxide nanoparticles were synthesized at four different laser energies: 9.3, 25.8, 75, and 255 mJ.
2016-8-19 · Amendola V, Riello P, Meneghetti M. Magnetic nanoparticles of iron carbide, iron oxide, [email protected] iron oxide, and metal iron synthesized by laser ablation in organic solvents. J Phys Chem C. 2010; 115 (12):5140–5146. [Google Scholar]
We present echofriendly laser ablation technique of Synthesizing iron oxide nanoparticle in pure water and discuss the impact of laser energy on the size, shape and morphology of the nanoparticle. The synthesized nanoparticle was characterized by UV/Visible absorption spectroscopy and morphological study was performed by scanning electron microscope (SEM).
The use of iron oxide magnetic nanoparticles (IMNP) in medical and pharmaceutical areas dates to the beginning of the 1970s, as carriers. Some other uses to these nanoparticles are in vitro separation, magnetic resonance imaging and drug targeting agent. Many preparations containing IMNP have been d …
2020-4-1 · We investigated the magnetic and morphological properties of the colloidal dispersions of iron oxide magnetic nanoparticles that were synthesized by two methods: chemical precipitation (co-precipitation) and pulsed laser ablation in liquid (PLA).
A recyclable energy cycle using a pulsed laser and base-metal nanoparticles is proposed. In this energy cycle, iron nanoparticles reduced from iron oxides by laser ablation in liquid are used for hydrogen generation. The laser energy can be stored in the base-metal nanoparticles as the difference between the chemical energies of iron oxide and iron.
Magnetic Nanoparticles of Iron Carbide, Iron Oxide, [email protected] Oxide, and Metal Iron Synthesized by Laser Ablation in Organic Solvents November 2010 The Journal of Physical Chemistry C 115(12)
2021-3-12 · Amorphous iron oxide nanoparticles were synthesized by pulsed-laser deposition (PLD) for functionalization of indium–tin oxide surfaces, resulting in electrodes capable of efficient catalysis in water oxidation. These electrodes, based on earth-abundant and nonhazardous iron metal, are able to sustain high current densities (up to 20 mA/cm2) at reasonably low applied potential (1.64 V at pH ...
2013-12-6 · Maneeratanasarn et al. have synthesized iron oxide by laser ablation of α-Fe 2 O 3 in various media such as ethanol, water, and acetone and they studied the effect of media on the NPs formation. The current study presents the synthesis of nanocrystalline iron oxide mainly including magnetite, by means of laser ablation in deionized water ...
Ultrafine/nanosize powders of iron oxide have been synthesized from a sintered α-Fe 2 O 3 target by pulsed excimer laser ablation and cold condensation. The influence of target porosity and temperature of condensation on the formation of nanosize particles has been studied. The nanosize powders have been characterized by X-ray diffraction, Möss spectroscopy, vibrating sample ...
2012-12-18 · Laser ablation of the iron oxide target in ethanol and acetone yields crystalline maghemite (γ‐Fe 2 O 3) nanoparticles, while that in D.I. water yields amorphous hematite (α‐Fe 2 O 3). Use of an iron oxide (α‐Fe 2 O 3 ) target for PLA in all three solvents is able to prevent the formation of metal iron and wustite phases in the final ...
2021-4-30 · Copper nanoparticles and their huge potential as a bactericidal agent could be a solution. In this work, Cu and Cu oxide nanoparticles were synthesized by laser ablation in open air and in argon atmosphere using 532 and 1064 nm radiation generated by nanosecond and picosecond Nd:YVO 4 lasers, respectively, to be directly deposited onto Ti ...
2012-3-13 · Background In this work the chemical structure of dextran-iron oxide thin films was reported. The films were obtained by MAPLE technique from composite targets containing 10 wt. % dextran with 1 and 5 wt.% iron oxide nanoparticles (IONPs). The IONPs were synthesized by co-precipitation method. A KrF* excimer laser source (λ = 248 nm, τFWHM≅25 ns, ν = 10 Hz) was used for the growth of the ...
2016-5-6 · Si/SiO x nanoparticles (NPs) produced by laser ablation in deionized water or aqueous biocompatible solutions present a novel extremely promising object for biomedical applications, but the interaction of these NPs with biological systems has not yet been systematically examined. Here, we present the first comprehensive study of biodistribution, biodegradability and toxicity of laser ...
Laser ablation of an iron target in water and acetone has been carried out using a frequency doubled Nd:glass laser source (pulse duration of 250 fs and frequency repetition rate of 10 Hz). The observation of the nanostructures formed in the laser irradiated region of the metallic target and fast shadowgraphic analysis of the laser induced cavitation bubble have been performed in order to ...
Lasemi, Niusha (2017) Pulsed laser generation of colloidal nickel, iron, and tungsten-iron-oxide alloy core-shell nanoparticles. Dissertation, Universität Wien. Fakultät für Chemie BetreuerIn: Kautek, Wolfgang Gesperrt bis: 11 Juni 2018 Keine Volltext-Freigabe durch VerfasserIn.
Laser ablation is a method for fabricating various kinds of nanoparticles including semiconductor quantum dots, carbon nanotubes, nanowires, and core shell nanoparticles. In this method, nanoparticles are generated by nucleation and growth of laser-vaporized species in a background gas. The extremely rapid quenching of vapor is advantageous in ...
2015-10-30 · Magnetic nanoparticles of iron carbide, iron oxide, [email protected] oxide, and metal iron synthesized by laser ablation in organic solvents J. Phys. Chem. C, 115 ( 2011 ), pp. 5140 - 5146 CrossRef View Record in Scopus Google Scholar
2016-2-18 · Reports of the formation of iron oxide nanostructures by laser ablation are rare, although syn-thesis by laser pyrolysis in the vapour phase is more common18 and the formation of iron oxide coatings on the surface of the laser irradiated iron targets has been observed.19 In this paper the formation of iron oxides nanostructures by laser ablation of iron powder under different liquid me-
2013-12-24 · Impact of Laser Energy on Synthesis of Iron Oxide Nano-particles in Liquid Medium Author: Alemu Kebede, Ashok V. Gholap, Awadhesh K. Rai Subject: We present echofriendly laser ablation technique of Synthesizing iron oxide nanoparticle in pure water and discuss the impact of laser energy on the size, shape and morphology of the nanoparticle.
2015-8-1 · In this study, (50–110 nm) magnetic iron oxide (α-Fe 2 O 3) nanoparticles were synthesized by pulsed laser ablation of iron target in dimethylformamide (DMF) and sodium dodecyl sulfate (SDS) solutions.The structural properties of the synthesized nanoparticles were investigated by using Fourier Transform Infrared (FT-IR) spectroscopy, UV–VIS absorption, scanning electron microscopy (SEM ...
We present echofriendly laser ablation technique of Synthesizing iron oxide nanoparticle in pure water and discuss the impact of laser energy on the size, shape and morphology of the nanoparticle.
2021-2-27 · Colloidal iron pyrite nanoparticles were prepared by MFLAL technique. In detail, high purity FeS 2 target (99.9%) of 12 mm thick and diameter of 20 mm was located in the quartz container and deionized water (DI) was added to container till the height of water be 2 mm above the FeS 2 target. To carry out the ablation process, pulses from Q-switched Nd:YAG laser of λ = 532 nm, 7 ns pulse ...
In this study, (50-110 nm) magnetic iron oxide (α-Fe2O3) nanoparticles were synthesized by pulsed laser ablation of iron target in dimethylformamide (DMF) and sodium dodecyl sulfate (SDS) solutions. The structural properties of the synthesized nanoparticles were investigated by using Fourier Transfo …
Magnetic iron oxide nanopowders are synthesized by the laser ablation of a target made of a coarse Fe 2 O 3 powder. The geometric characteristics of the nanopowders and their yield are studied over a wide air pressure range ((1-34) × 10 4 Pa) in an evaporation chamber. The phase compositions of the nanopowders and the conditions under which their chemical composition is closest to magnetite ...
2012-4-17 · Magnetic iron oxide nanopowders are synthesized by the laser ablation of a target made of a coarse Fe 2 O 3 powder. The geometric characteristics of the nanopowders and their yield are studied over a wide air pressure range ((1–34) × 10 4 Pa) in an evaporation chamber. The phase compositions of the nanopowders and the conditions under which their chemical composition is closest to magnetite ...
We present echofriendly laser ablation technique of Synthesizing iron oxide nanoparticle in pure water and discuss the impact of laser energy on the size, shape and morphology of the nanoparticle. The synthesized nanoparticle was characterized by UV/Visible absorption spectroscopy and morphological study was per-formed by scanning electron ...