CEQUINOR   05415
CENTRO DE QUIMICA INORGANICA "DR. PEDRO J. AYMONINO"
Unidad Ejecutora - UE
artículos
Título:
Effect of acid oxidation treatment on adsorption properties of arc-discharge synthesized multiwall carbon nanotubes
Autor/es:
VICENTE JOSÉ LUIS; ALBESA ALBERTO; LLANOS JORGE LUIS; FLORES ETHEL SUSANA; FERTITTA ABEL EDGARDO; SORIA BEATRIZ; MORENO M. SERGIO ; RAFTI MATÍAS
Revista:
Journal of the Argentine Chemical Society
Editorial:
ASOCIACIÓN QUÍMICA ARGENTINA
Referencias:
Lugar: Buenos Aires; Año: 2011 vol. 98 p. 29 - 29
ISSN:
0365-0375
Resumen:
The effect of nitric/sulfuric acid oxidation treatment on commercial arc-discharge multiwall carbonnanotubes was studied. Purification and structure modifications were assessed via TransmissionElectron Microscopy and Thermogravimetric Analysis; while changes in adsorption properties weremonitored by nitrogen and methane adsorption isotherms. After treatment, nitrogen isotherms present hysteresis loop and an increased BET surface area; while adsorption energies obtained fromisosteric heat profiles revealed a marked decrease. We propose an explanation for these findingsand use macroscopic experimental data to gain insight on acid oxidation effect on the material.