Print ISSN: 1681-6900

Online ISSN: 2412-0758

Keywords : Laser Ablation in Liquid


Preparation of Carbon Nanotube by Pulse Laser Ablation of Graphite Target in Demonized Water

Khawla S. khashan; Mayyadah H. Mohsin

Engineering and Technology Journal, 2014, Volume 32, Issue 1, Pages 61-71

In the present work, carbon nanotube was synthesis by pulse laser ablation of graphite target in deionize-water. Fourier Transform Infrared Spectroscopy (FTIR), UV-Visible Spectrophotometer and Transmission electron Microscopy (TEM) were used to study chemical bonding, optical absorption, particle size, structure and morphology of the carbon nanotube. The FTIR absorption peaksat 2092.6
cm-1, 2150 and 1641.3 cm-1is due to the C ≡ C and C = C stretching vibration bondrepresents, which suggest the formation of carbon nanoparticles suspend in this suspension, UV absorption peaks coincide with the electronic transitions corresponding to linear hydrogen – capped polyyne (Cn+1H2), polyynes are important precursor molecular components in the formation of carbon nanotubes. The TEM show the aggregation of the carbon nanoparticles with size ranges from (9.4 – 70.5 nm), the structure and morphology of thenanotube can be observed with diameters (12.5 -25) nm andlength(500 -708.3) nm.

Carbon Nanotube Prepared by Pulse Laser Ablation of Graphite Target in Iso-Propanol Solution

Khawla S. khashan; Mayyadah H. Mohsin

Engineering and Technology Journal, 2013, Volume 31, Issue 16, Pages 3078-3089

In this work carbon nanotube was synthesis by pulse laser ablation of graphite
target in Iso-propanol solution. Fourier Transform Infrared Spectroscopy (FTIR),
UV-Visible Spectrophotometer and Transmission Electron Microscopy (TEM)
were used to study chemical bonding, optical absorption, particle size, structure
and morphology of the carbon nanotube. The FTIR absorption peak at 2335.6,
1647.1 cm-1& 1269.1 cm-1 stretching vibration bond, it is inferred that the C ≡ C ,
C = C and C-C, respectively. Bonds suggests the formation carbon nanoparticles
suspend in this solvent, UV absorption peaks coincide with the electronic
transitions corresponding to linear hydrogen – capped polyyne (Cn+1H2), polyynes
are important precursor molecular components in the formation of carbon
nanotubes. The TEM show the aggregation of the carbon nanoparticles with size
ranges from (1.66 to 41.6 nm), the structure and morphology of the CNT’s with
diameter at range 11.1 – 46.15 nm and length at range 261.1 - 592.3 nm.