GROWTH OF TiO2 NANOPARTICLES BY PULSED LASER ABLATION (PLA) IN LIQUID MEDIA AND STUDY OF PHOTOCATALYTIC PROPERTIES

2008 ◽  
Vol 22 (18n19) ◽  
pp. 3193-3200 ◽  
Author(s):  
S. SHADMEHR ◽  
S. M. MAHDAVI ◽  
N. TAGHAVINIA ◽  
A. AZARIAN
Keyword(s):  
Aqueous Solution ◽  
Laser Ablation ◽  
Sodium Dodecyl ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation ◽  
Laser Wavelength ◽  
Titanium Target ◽  
Mean Size ◽  
Uv Visible

We synthesized TiO 2 nanoparticles by pulsed laser ablation of titanium target immersed in an aqueous solution of surfactant sodium dodecyl sulfate (SDS) or deionized water. The surfactant concentration dependence on size of TiO 2 nanoparticles was investigated. The maximum amount of nanoparticles (with mean size of 40 nm in diameter) was obtained in an aqueous solution of 0.001 M SDS. We have also studied the effect of laser wavelength on growth of TiO 2 nanoparticles. UV/visible spectroscopy and Scanning Electron Microscopy observations were employed for characterization of optical properties and particle sizes respectively. As TiO 2 is a famous photocatalyst, we have also done photocatalytic test by Methyl Orange under UV irradiation for prepared samples.

Synthesis, characterization, and phase stability of ultrafine TiO2 nanoparticles by pulsed laser ablation in liquid media

2004 ◽  
Vol 19 (5) ◽  
pp. 1551-1557 ◽  
Author(s):  
Changhao Liang ◽  
Yoshiki Shimizu ◽  
Takeshi Sasaki ◽  
Naoto Koshizaki
Keyword(s):  
Heat Treatment ◽  
Aqueous Solution ◽  
Laser Ablation ◽  
Sodium Dodecyl ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation ◽  
Particle Growth ◽  
Titania Nanoparticles ◽  
Laser Ablation In Liquid ◽  
Mean Size

We synthesized ultrafine TiO2 nanoparticles by pulsed laser ablation of a titanium target immersed in an aqueous solution of surfactant sodium dodecyl sulfate (SDS) or deionized water. The surfactant concentration dependence of TiO2 nanocrystal formation was systematically investigated by various characterization techniques. The maximum amount of ultrafine anatase nanocrystalline particles (with mean size of 3 nm in diameter) was obtained in an aqueous solution of 0.01 M SDS. A probable formation process was proposed based on the laser-induced reactive quenching and surfactant-mediated growth. The phase transformation and particle growth of as-prepared products were also investigated by heat treatment up to 500 °C. Single-phase anatase nanoparticles with a mean size of 8 nm were obtained by heat treatment of samples prepared in water or in a 0.01 M SDS solution. Particle size did not substantially increase through annealing, probably due to the relatively homogeneous size distribution and crystallinity of as-prepared titania nanoparticles.

Synthesis of Cadmium and its Oxide Nanomaterials by Pulsed Laser Ablation in Aqueous Media

2008 ◽  
Vol 1074 ◽  
Author(s):  
Subhash Chandra Singh ◽  
Rajkumar Swarnkar ◽  
Ram Gopal
Keyword(s):  
Laser Ablation ◽  
Colloidal Solution ◽  
Aqueous Media ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation ◽  
Distilled Water ◽  
Visible Absorption ◽  
Cadmium Metal ◽  
Uv Visible

ABSTRACTCadmium based oxide and hydroxide nanocomposites material is synthesized by pulsed laser ablation of cadmium metal in the double distilled water. A piece of cadmium metal, placed on the bottom of glass vessel containing double distilled water, was irradiated with 1064 nm of pulsed Nd:YAG laser operating at 35 mJ/pulse energy and 10 ns pulse width for 30 minutes. Colloidal solution of produced Nanoparticles is found stable for two days. Fine white colored powder is obtained after drying centrifuged solution. UV-visible absorption of colloidal solution, XRD, TGA, DTA and FTIR of the powder is used for the characterization of material. Possible mechanism of synthesis and hydroxide to oxide transition is discussed.

Preparation and Characterization of Gold Coated Super Paramagnetic Iron Nanoparticle Using Pulsed Laser Ablation in Liquid Method

2021 ◽  
Vol 886 ◽  
pp. 77-85
Author(s):  
Adawiya J. Haider ◽  
Maha A. Al-Kinani ◽  
Sharafaldin Al-Musawi
Keyword(s):  
Laser Ablation ◽  
Laser Fluence ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation ◽  
Laser Ablation In Liquid ◽  
Au Nps ◽  
Laser Fluences ◽  
Atomic Force ◽  
Mean Size ◽  
Uv Visible

Fe@Au is a type of nanoparticle that contains magnetic Fe NPs core with a fine layer of Au NPs synthesized using the Pulsed Laser Ablation in Liquid (PLAL) Method. These Fe@Au NPs characterized by Atomic Force Microscope (AFM), Field Emission Scanning Electron Microscopy (FESEM), and UV-Visible Spectrophotometer. The result was obtained at different laser fluences (1.9, 2.2, and 2.5) J/cm2 with fixed pulse duration 5 ns, wavelength 532nm and number of pulse equal 100 pulsed. The obtained mean size of Fe@Au NPs at laser fluence (1.9, 2.2, and 2.5) J/cm2 was (63.65, 32.47 and 31.18) nm respectively. UV-Visible Spectrophotometer carves was showed a redshift toward longer wavelength by increasing particle size. Obtained results exhibited that the laser fluence plays a key role in the size, and dispersity of Fe@Au NPs.

Characterization of deposits produced by TEA CO2 pulsed laser ablation of silicon mono- and dioxide

2005 ◽  
Vol 351 (2) ◽  
pp. 116-123 ◽  
Author(s):  
Vladislav Dřínek ◽  
Karel Vacek ◽  
Josef Pola ◽  
Gleb Yuzhakov ◽  
Olga Šolcová ◽  
...  
Keyword(s):  
Laser Ablation ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation

scholarly journals Synthesis, structural and magnetic characterization of lead-metaniobate/cobalt-ferrite nanocomposite films deposited by pulsed laser ablation

2014 ◽  
Vol 118 (1) ◽  
pp. 275-281 ◽  
Author(s):  
Pedro Sá ◽  
José Barbosa ◽  
Isabel T. Gomes ◽  
Jorge A. Mendes ◽  
João Ventura ◽  
...  
Keyword(s):  
Laser Ablation ◽  
Cobalt Ferrite ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation ◽  
Nanocomposite Films ◽  
Magnetic Characterization ◽  
Lead Metaniobate

Growth and characterization of epitaxial Ba2Bi4Ti5O18 films deposited by pulsed laser ablation

2000 ◽  
Vol 114 (5) ◽  
pp. 249-253 ◽  
Author(s):  
A.R James ◽  
A Pignolet ◽  
S Senz ◽  
N.D Zakharov ◽  
D Hesse
Keyword(s):  
Laser Ablation ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation

Characterization of Hastelloy thin films deposited by pulsed laser ablation

2002 ◽  
Vol 197-198 ◽  
pp. 343-347 ◽  
Author(s):  
M.F Vignolo ◽  
I Avram ◽  
S Duhalde ◽  
C Morales ◽  
T Pérez ◽  
...  
Keyword(s):  
Thin Films ◽  
Laser Ablation ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation

Preparation of ZnO Nanoparticles by 1064/532nm Laser Ablation and Studying the Effect of the Ablation Wavelength

2021 ◽  
Vol 1021 ◽  
pp. 171-180
Author(s):  
Munaf S. Majeed ◽  
Rabea Q. Nafil ◽  
Marwa F. Abdul Jabbar ◽  
Kadhim H. Suffer
Keyword(s):  
Zinc Oxide ◽  
Laser Ablation ◽  
Pure Water ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation ◽  
Ultra Pure Water ◽  
Hexagonal Shape ◽  
532 Nm ◽  
Laser Ablation Technique

We prepared Zinc oxide nanomaterial employing PLA (pulsed laser ablation) technique. A pure Zn target was immersed in ultra-pure water (UPW) and it was subjected to several pulses (1st. and 2nd. harmonic) of the pumping Nd: YAG laser. The influence of changing laser’s wavelength (1064, 532) nm on the characterization of the produced nanoparticles was studied. The results obtained from studying the structure, topography, and morphology of the product showed that the particles have a hexagonal shape. Also, changing the wavelength of the laser from 532nm to 1064nm leads to size reduction and density increasing of the nanoparticles.

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