Journal
CARBON
Volume 63, Issue -, Pages 324-329Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2013.06.085
Keywords
-
Funding
- M.V. Lomonosov Moscow State University (MSU)
- Russian Foundation for Basic Research
- [16.552.11.7084]
Ask authors/readers for more resources
Multiwalled carbon nanotubes (MWCNTs) consisting of coaxial graphene cylinders (cylindrical MWCNTs), cones (herringbone MWCNTs) or carbon fibers were combusted in an isothermal bomb calorimeter. Their standard enthalpies of formation were determined to be 16.56 +/- 2.76 kJ mol(-1)(C - per carbon mol) for carbon fibers, 21.70 +/- 1.32 kJ mol(-1)(C) for herringbone MWCNTs and 8.60 +/- 0.52 kJ mol(-1)(C) for cylindrical ones. All materials were characterized by transmission electron microscopy, scanning electron microscopy, Raman spectroscopy, thermogravimetry, and elemental analysis. A linear correlation between the standard enthalpies of formation and DIG and G'/G Raman bands ratio (D - band is centered at 1350 cm(-1), G - 1585 cm(-1), G' -2700 cm(-1)) demonstrates the applicability of bomb calorimetry for characterization of the defectiveness of the bulk carbon material in the sense Raman spectroscopy is widely used nowadays. Also, we show that the calorimetry maybe used to estimate the oxygen content in the bulk carbon nanomaterials, as there is a linear correlation between the oxygen content (both total content and in carboxyl groups separately) and the standard enthalpies of formation for herringbone nanotubes oxidized by nitric acid. (C) 2013 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available