Intensity of sulfonitric treatment on multiwall carbon nanotubes

SAKKA, YOSHIO; GÓMEZ, SOFÍA; AGLIETTI, ESTEBAN F.; AGLIETTI, ESTEBAN F.; SUAREZ, GUSTAVO; RENDTORFF, NICOLÁS M.; SUAREZ, GUSTAVO; RENDTORFF, NICOLÁS M.; SAKKA, YOSHIO; GÓMEZ, SOFÍA

CHEMICAL PHYSICS LETTERS

ELSEVIER SCIENCE BV

Lugar: Amsterdam; Año: 2017 vol. 689 p. 135 - 141

0009-2614

We present a study of sulfonitric treatment and its effect on MWCNTs at different temperatures (90, 110, 130 and 150°C) using DRX, XPS, FTIR, Raman spectroscopy, TEM and zeta potential. It was found that oxidation starts with the C-C and C-H bonds generating different oxidized groups from alcohol to carboxylic acid, following a sequential oxidation. Given that heterocoagulation needs a maximum zeta potential gap between the ceramic and the MWCNT surface and it significantly exist a risk of manipulate acids at high temperature it is recommended to use acid treatment of CNT at 110 °C for generating ceramic composites by heterocoagulation.