TY - JOUR
T1 - Stability of single-wall carbon nanotubes under hydrothermal conditions
AU - Swamy, S. Srikanta
AU - Calderon-Moreno, Jose Maria
AU - Yoshimura, Masahiro
N1 - Funding Information:
The authors thank Y.G. Gogotsi, University of Illinois, Chicago, IL, for valuable discussion. This work has been carried out under a Research Institute for Solvothermal Technology, Takamatsu, Kagawa, Japan, sponsored project. Financial support (No. 96RO6901) from the Japan Society for the Promotion of Science (JSPS) is also acknowledged.
PY - 2002/4
Y1 - 2002/4
N2 - The stability of single-wall carbon nanotubes under hydrothermal conditions (100 MPa pressure, from 30 min to 48 h in the temperature range from 200 to 800 °C) has been investigated. The resultant products were characterized by Raman spectroscopy, x-ray diffraction, and transmission electron microscopy. The stability range of single-wall carbon nanotubes (SWCNTs) under hydrothermal conditions suggests that they, similar to fullerenes, can only survive mild and short-term treatment in high-temperature, high-pressure water. SWCNTs gradually transform into multiwall carbon nanotubes (MWCNTs) and polyhedral graphitic nanoparticules. After 48 h at 750 °C only the Raman spectra characteristic of graphitic carbon were observed. Transmission electron microscopy revealed that after 800 °C and 48 h of treatment SWCNTs fully transformed into MWCNTs and polyhedral carbon nanoparticles.
AB - The stability of single-wall carbon nanotubes under hydrothermal conditions (100 MPa pressure, from 30 min to 48 h in the temperature range from 200 to 800 °C) has been investigated. The resultant products were characterized by Raman spectroscopy, x-ray diffraction, and transmission electron microscopy. The stability range of single-wall carbon nanotubes (SWCNTs) under hydrothermal conditions suggests that they, similar to fullerenes, can only survive mild and short-term treatment in high-temperature, high-pressure water. SWCNTs gradually transform into multiwall carbon nanotubes (MWCNTs) and polyhedral graphitic nanoparticules. After 48 h at 750 °C only the Raman spectra characteristic of graphitic carbon were observed. Transmission electron microscopy revealed that after 800 °C and 48 h of treatment SWCNTs fully transformed into MWCNTs and polyhedral carbon nanoparticles.
UR - https://www.scopus.com/pages/publications/0036541120
UR - https://www.scopus.com/pages/publications/0036541120#tab=citedBy
U2 - 10.1557/JMR.2002.0106
DO - 10.1557/JMR.2002.0106
M3 - Article
AN - SCOPUS:0036541120
SN - 0884-2914
VL - 17
SP - 734
EP - 737
JO - Journal of Materials Research
JF - Journal of Materials Research
IS - 4
ER -