Synthesis of carbon particles using laser ablation in ethanol
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Publication Details
Author list: Thongpool V., Asanithi P., Limsuwan P.
Publisher: Elsevier
Publication year: 2012
Volume number: 32
Start page: 1054
End page: 1060
Number of pages: 7
ISSN: 1877-7058
Languages: English-Great Britain (EN-GB)
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Abstract
Carbon particles were synthesized via laser ablation of a bulk graphite in ethanol medium using Nd:YAG laser with a wavelength of 1064 nm. The target was irradiated by the laser beam with a pulse energy of 3 J, a pulse repetition rate of 2 Hz, and a pulse duration of 5 ms. Effect of using ethanol as a liquid medium for laser ablation on physical, chemical, and optical properties of resulted carbon particles was reported. SEM images presented that a flake-like morphology of graphite in the target has been transformed into a flower-like cluster after the ablation. Raman measurement showed that G peak position of the graphite flakes and that of the synthesized carbon particles were similar, about 1582 cm-1, whereas D peak position and its shape of the synthesized particles was different from those of graphite flakes. UV-visible and fluorescent spectrometers were used to investigate absorption and emission characteristics of the particles, respectively. The carbon particles can absorb a light in the UV range and emit a photoluminescence of bright blue-green color. ฉ 2010 Published by Elsevier Ltd.
Keywords
Carbon particles, Graphite flake
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