Single-wall carbon nanotubes (SWCNTs) and well-aligned thin multiwall carbon nanotubes
(MWCNTs) were successfully synthesized via pyrolysis of a powder mixture of ferrocene
and anthracene or 9,10-dibromoanthracene. It is shown that the size of the MWCNTs can
be tuned just by changing the ratio of ferrocene/anthracene in the mixture. A lower ratio
resulted in low-diameter MWCNTs containing up to five graphene layers only; a high ratio
has led to thick MWCNTs with more than 25 layers. Furthermore, there are two extreme
cases, the pyrolysis of powders at a low ratio of 1:7 that gives rise to carbon nanospheres
and the pyrolysis of pure ferrocene in a H2 flow that mainly gives rise to metal nanoparticles.
When powder mixtures of ferrocene and 9,10-dibromoanthracene are pyrolyzed, both
SWCNTs and spherical carbon-coated iron nanoparticles are obtained.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.