Xun Li Zheng Xu. Controllable synthesis of helical straight hollow and nitrogen-doped carbon nanofibers and their magnetic properties. Materials Research Bulletin 2012 http://dx.doi.org-10.1016-j.materresbull.2012.09.025.

Abstract

Carbon nanofibers (CNFs) with various morphologies were synthesized by catalytic pyrolysis of acetylene on copper nanoparticles which were generated from the in situ decomposition of copper acetylacetonate. The morphology of the pristine and acid-washed CNFs was investigated by field emission scanning electron microscope and high-resolution transmission electron microscope. Helical straight and hollow CNFs can be selectively synthesized by adjusting either the reaction temperature or feed gas composition. The growth mechanism for these three types of CNFs was proposed.

Graphical abstract

The helical straight and hollow carbon nanofibers can be selectively synthesized by adjusting either the reaction temperature or feed gas composition.