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- Cardenas, J. F., et al.
(författare)
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Raman spectroscopy of carbon nano-particles synthesized by laser ablation of graphite in water
- 2017
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Ingår i: Revista mexicana de física. - 0035-001X. ; 63:1, s. 71-75
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Tidskriftsartikel (refereegranskat)abstract
- Carbon nanoparticles (CNPs) have been synthesized by laser ablation of polycrystalline graphite in water using a pulsed Nd:YAG laser (1064 nm) with a width of 8 ns. Structural and mesoscopic characterization of the CNPs in the supernatant by Raman spectroscopy provide evidence for the presence of mainly two ranges of particle sizes: 1-5 nm and 10-50 nm corresponding to amorphous carbon and graphite NPs, respectively. These results are corroborated by complementary characterization using atomic force microscopy (AFM) and transmission electron microscopy (TEM). In addition, large (10-100 mu m) graphite particles removed from the surface are essentially unmodified (in structure and topology) by the laser as confirmed by Raman analysis.
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