Artículos de revistas
TEM Examination of MWCNTs Oxidized by Mild Experimental Conditions
Autor
FRANCIS AVILES CETINA
Institución
Resumen
A detailed transmission electron microscopy (TEM) examination of the surface of
multi-walled carbon nanotubes (MWCNTs) oxidized using mild experimental conditions shows evidence of nanotube length shortening after acid treatments and important
modifications at the nanostructural level, such as damage to the graphitic structure and
stripping of the inner layers. It is shown that damage caused to the MWCNTs strongly
depends on the acid concentration, even for short exposure times. Structural damage
and fragmentation generated by a treatment based on 3.0 M HNO3 followed by H2O2
is mild compared to the severe damage caused by a combination of concentrated nitric
and sulfuric acids.