Journal
ACS NANO
Volume 5, Issue 6, Pages 5132-5140Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nn201224k
Keywords
carbon nanotube; SWNT; hydrogen; graphene; graphane
Categories
Funding
- Angpanneforeningens Forskningstiftelse
- Academy of Finland [128445]
Ask authors/readers for more resources
Reaction of single-walled carbon nanotubes (SWNTs) with hydrogen gas was studied in a temperature interval of 400-550 degrees C and at hydrogen pressure of 50 bar. Hydrogenation of nanotubes was observed for samples treated at 400-450 degrees C with about 1/3 of carbon atoms forming covalent C-H bonds, whereas hydrogen treatment at higher temperatures (550 degrees C) occurs as an etching. Unzipping of some SWNTs Into graphene nanoribbons is observed as a result of hydrogenation at 400-550 degrees C Annealing in hydrogen gas at elevated conditions for prolonged periods of time (72 h) is demonstrated to result also in nanotube opening, purification of nanotubes from amorphous carbon, and removal of carbon coatings from Fe catalyst particles, which allows their complete elimination by acid treatment.
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