scholarly journals Green Fabrication of Copper Nanoparticles Dispersed in Walnut Oil Using Laser Ablation Technique

2016 ◽  
Vol 2016 ◽  
pp. 1-7 ◽  
Author(s):  
Amir Reza Sadrolhosseini ◽  
Suraya Abdul Rashid ◽  
Azmi Zakaria ◽  
Kamyar Shameli
Keyword(s):  
Particle Size ◽  
Laser Ablation ◽  
Copper Nanoparticles ◽  
Volume Fraction ◽  
Spherical Shape ◽  
Copper Plate ◽  
Refractive Indices ◽  
Walnut Oil ◽  
Laser Ablation Method ◽  
Environmentally Sensitive

Synthesis of copper nanoparticles was achieved by laser irradiation of copper plate in walnut oil. The copper plate was irradiated using Nd:YAG pulse laser at different ablation time from 5 to 50 minutes, and the prepared samples were characterized using analytical methods to find the optical absorption, morphology, particle size, and capping of copper nanoparticles with walnut oil. Consequently, the absorption peak appeared at about 615, 606, 588, 576, and 561 nm; and the nanoparticles formed in spherical shape in walnut oil. The particle size varied from 25 to 4.01 nm, and the tail of the carbonyl band capped the copper nanoparticles through the electron transfer from the carboxylic group to copper nanoparticles. The refractive indices of the nanofluid were measured using a surface plasmon resonance technique and changed from 1.4691 + 0.008i to 1.4682 + 0.043i as the volume fraction increased from 0.0257 × 10−5to 1.26 × 10−5. Consequently, the laser ablation method is environmentally sensitive (i.e., green) and thus is suitable for the fabrication of copper nanoparticles in walnut oil without any agent.

Preparation ZnO nanoparticles with Different Concentration by Laser Ablation in Liquid

2021 ◽  
Vol 39 (1B) ◽  
pp. 197-202
Author(s):  
Ghufran S. Jaber ◽  
Khawla S. Khashan ◽  
Maha J. Abbas
Keyword(s):  
Particle Size ◽  
Laser Ablation ◽  
Laser Pulse ◽  
Laser Energy ◽  
Average Particle Size ◽  
Spherical Shape ◽  
Pulse Number ◽  
Average Particle ◽  
Zno Nps ◽  
Laser Ablation In Liquid

The effects of varying laser pulse numbers on the fabricated of ZnONPs by pulsed laser ablation in deionized water of Zn-metal are investigated. The Nd: YAG laser at energy 600mJ prepared three samples by change the laser pulse number (100, 150, and 200). The results were collected and examined using an electron scanning microscope, XRD – diffraction, and transmission electron microscope. The result revealed the colloidal spherical shape and the homogeneous composition of the ZnO NPs. The nanoparticles resulted in different concentrations and sized distributions by changing the pulse number of a laser. The average particle size and the mass concentration of particle size increase with an increasing number of laser pulses by fixed the laser energy.

The Research Possibility of Definition Mass Biological Nanoobjects Using Terahertz Laser Ablation Method

2009 ◽  
Vol 4 (3) ◽  
pp. 74-77
Author(s):  
Mikhail Vagin ◽  
Anton Unitsyn ◽  
Aleksandr Petrov ◽  
Aleksandr Kozlov ◽  
Sergey Malyshkin ◽  
...  
Keyword(s):  
Particle Size ◽  
Laser Ablation ◽  
Molecular Mass ◽  
Aerosol Particle ◽  
Free Electron ◽  
Free Electron Laser ◽  
Thz Radiation ◽  
Laser Ablation Method ◽  
Aerosol Particle Size ◽  
Mass Definition

Possibility of mass definition using terahertz laser ablation method for biological nanoobjects is researched. Diffusion spectrometer of aerosols was applied for measuring the size of dispersed products of terahertz laser ablation. Dependence of molecular mass from the aerosol particle size was obtained for fragments of DNA λ-hind. This work was carried out using THz radiation of free electron laser of Siberian center of photochemical researches.

scholarly journals Effect of solvent in the synthesis of colloidal copper nanoparticles by pulse laser ablation method

2019 ◽  
Author(s):  
Inayah Mumpuni Budiati ◽  
Fatkhiyatus Sa’adah ◽  
Nabila Dyah Rifani ◽  
Ali Khumaeni
Keyword(s):  
Laser Ablation ◽  
Pulse Laser ◽  
Copper Nanoparticles ◽  
Pulse Laser Ablation ◽  
Effect Of Solvent ◽  
Laser Ablation Method

scholarly journals Optical Nonlinear Refractive Index of Laser-Ablated Gold Nanoparticles Graphene Oxide Composite

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Amir Reza Sadrolhosseini ◽  
A. S. M. Noor ◽  
Nastaran Faraji ◽  
Alireza Kharazmi ◽  
Mohd. Adzir Mahdi
Keyword(s):  
Particle Size ◽  
Gold Nanoparticles ◽  
Refractive Index ◽  
Graphene Oxide ◽  
Gold Nanoparticle ◽  
Spherical Shape ◽  
Refractive Indices ◽  
Hydroxyl Groups ◽  
Uv Visible ◽  
Laser Ablation Technique

Gold nanoparticles were prepared in graphene oxide using laser ablation technique. The ablation times were varied from 10 to 40 minutes, and the particle size was decreased from 16.55 nm to 5.18 nm in spherical shape. The nanoparticles were capped with carboxyl and the hydroxyl groups were obtained from Fourier transform infrared spectroscopy. Furthermore, the UV-visible peak shifted with decreasing of nanoparticles size, appearing from 528 nm to 510 nm. The Z-scan technique was used to measure the nonlinear refractive indices of graphene oxide with different concentrations and a gold nanoparticle graphene oxide nanocomposite. Consequently, the optical nonlinear refractive indices of graphene oxide and gold nanoparticle graphene oxide nanocomposite were shifted from1.63×10-9 cm2/W to4.1×10-9 cm2/W and from1.85×10-9 cm2/W to5.8×10-9 cm2/W, respectively.

scholarly journals Preparation and Characterization of Alumina Nanoparticles in Deionized Water Using Laser Ablation Technique

2012 ◽  
Vol 2012 ◽  
pp. 1-6 ◽  
Author(s):  
Veeradate Piriyawong ◽  
Voranuch Thongpool ◽  
Piyapong Asanithi ◽  
Pichet Limsuwan
Keyword(s):  
Particle Size ◽  
Laser Ablation ◽  
Absorption Spectra ◽  
Laser Energy ◽  
Spherical Shape ◽  
Deionized Water ◽  
Alumina Nanoparticles ◽  
X Ray Diffraction ◽  
Sem Images ◽  
Xrd Patterns

Al2O3nanoparticles were synthesized using laser ablation of an aluminum (Al) target in deionized water. Nd:YAG laser, emitted the light at a wavelength of 1064 nm, was used as a light source. The laser ablation was carried out at different energies of 1, 3, and 5 J. The structure of ablated Al particles suspended in deionized water was investigated using X-ray diffraction (XRD). The XRD patterns revealed that the ablated Al particles transformed intoγ-Al2O3. The morphology of nanoparticles was investigated by field emission scanning electron microscopy (FE-SEM). The FE-SEM images showed that most of the nanoparticles obtained from all the ablated laser energies have spherical shape with a particle size of less than 100 nm. Furthermore, it was observed that the particle size increased with increasing the laser energy. The absorption spectra of Al2O3nanoparticles suspended in deionized water were recorded at room temperature using UV-visible spectroscopy. The absorption spectra show a strong peak at 210 nmarising from the presence of Al2O3nanoparticles. The results on absorption spectra are in good agreement with those investigated by XRD which confirmed the formation of Al2O3nanoparticles during the laser ablation of Al target in deionized water.

scholarly journals Optical Nonlinear Properties of Gold Nanoparticles Synthesized by Laser Ablation in Polymer Solution

2017 ◽  
Vol 2017 ◽  
pp. 1-9 ◽  
Author(s):  
M. Tajdidzadeh ◽  
A. B. Zakaria ◽  
Z. Abidin Talib ◽  
A. S. Gene ◽  
S. Shirzadi
Keyword(s):  
Particle Size ◽  
Gold Nanoparticles ◽  
Polyethylene Glycol ◽  
Laser Ablation ◽  
Volume Fraction ◽  
Chitosan Solution ◽  
The Other ◽  
Distilled Water ◽  
Nonlinear Properties ◽  
Glycol Solution

In the present study, gold nanoparticles were synthesized in various polymer solutions by means of employing laser ablation technique at the same ablation time. Specifically, gold nanoparticles were synthesized in polyethylene glycol and chitosan solutions, in order to compare the effects of the liquid media which served as stabilizers for particle size and volume fraction of nanoparticles. In addition, this experiment was repeated in distilled water for reference purposes. As the findings indicated, the particle size which was obtained in polyethylene glycol was about 7.49 nm, that is, smaller than those of chitosan solution and distilled water, respectively. In contrast, it was observed that the volume fraction of gold nanoparticles increased in polyethylene glycol in comparison with the other media which indicated an effect on the formation of NPs. On the other hand,Z-scan technique was employed to measure the nonlinear refractive index and nonlinear absorption coefficient of nanofluids containing gold nanoparticles. Consequently, the nonlinear properties of nanofluids pointed to a significant contribution with the number of nanoparticles observed in fluids and both optical nonlinear parameters were observed to increase by means of a prior increase in the volume fraction of Au-NPs in polyethylene glycol solution.

scholarly journals Synthesis of Ag Nanoparticles-Decorated CNTs via Laser Ablation Method for the Enhancement the Photocatalytic Removal of Naphthalene from Water

Nanomaterials ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 2142
Author(s):  
Fowzia S. Alamro ◽  
Ayman M. Mostafa ◽  
Khulood A. Abu Abu Al-Ola ◽  
Hoda A. Ahmed ◽  
Arafat Toghan
Keyword(s):  
Carbon Nanotubes ◽  
Laser Ablation ◽  
Analytical Techniques ◽  
Spherical Shape ◽  
Liquid Media ◽  
Ag Nps ◽  
Laser Ablation Method ◽  
Vibrational Characteristic ◽  
Photocatalytic Removal ◽  
Disorder Degree

Silver nanoparticles (Ag NPs) were decorated with different amounts on the exterior walls of carbon nanotubes (CNTs) by a laser ablation assisted method, especially in liquid media to be applied as a good adsorption material against naphthalene. The laser ablation time was controlled the amount of decoration Ag NPs on CNTs. The prepared nanocomposite was analyzed via different analytical techniques. Ag NPs with a small size distribution of 29 nm are uniformly decorated with spherical shape on CNTs walls. The disorder degree of tubular structure and shifting of the vibrational characteristic peaks increase with the increase in the decoration of Ag NPs. After that, the prepared samples were investigated for the removal of naphthalene. These studies of loading Ag NPs with different amounts on the surface of CNTs act as a promising material for water treatment.

scholarly journals Preparation of Graphene Oxide Stabilized Nickel Nanoparticles with Thermal Effusivity Properties by Laser Ablation Method

2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
Amir Reza Sadrolhosseini ◽  
A. S. M. Noor ◽  
Kamyar Shameli ◽  
Alireza Kharazmi ◽  
N. M. Huang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Laser Ablation ◽  
Nickel Nanoparticles ◽  
Volume Fraction ◽  
Thermal Effusivity ◽  
Photoacoustic Technique ◽  
Oxide Composite ◽  
Nickel Nanoparticle ◽  
Laser Ablation Method ◽  
Nanoparticle Sizes

Nickel nanoparticles were dispersed uniformly in a graphene oxide solution, using a laser ablation technique with different ablation times that ranged from 5 to 20 minutes. The results indicate that the nickel nanoparticle sizes inside the graphene oxide decreased, and the volume fraction for the nickel nanoparticles in the graphene oxide increased with an increasing ablation time. Further, using Fourier Transform Infrared Spectroscopy, the nickel nanoparticles in the graphene oxide demonstrate greater stability from possible agglomeration when the nanoparticle was capped with oxygen from the carboxyl group of the graphene oxide. The thermal effusivity of the graphene oxide and nickel nanoparticle graphene oxide composite was measured using a photoacoustic technique. The concentration of graphene oxide shifted from 0.05 mg/L to 2 mg/L, and the thermal effusivity increased from 0.153 W·s1/2·cm−2·K−1to 0.326 W·s1/2·cm−2·K−1. In addition, the thermal effusivity of the nickel nanoparticles graphene oxide composite increased with an increase in the volume fraction of nickel nanoparticles from 0.1612 W·s1/2·cm−2·K−1to 0.228 W·s1/2·cm−2·K−1.

Investigation of the in situ generation of oxide-free copper nanoparticles using pulsed-laser ablation of bulk copper in aqueous solutions of DNA bases

RSC Advances ◽  
2016 ◽  
Vol 6 (111) ◽  
pp. 109885-109896 ◽  
Author(s):  
Farid Hajareh Haghighi ◽  
Hassan Hadadzadeh ◽  
Hossein Farrokhpour
Keyword(s):  
Laser Ablation ◽  
Aqueous Solutions ◽  
Copper Nanoparticles ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation ◽  
Dna Bases ◽  
Copper Target ◽  
Laser Ablation Method ◽  
Green Approach

The pulsed-laser ablation method was used as a facile and green approach to prepare oxide-free copper nanoparticles, and was performed by laser ablation of a copper target in aqueous solutions of the DNA bases.

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