Nickel catalyst faceting in plasma-enhanced direct current chemical vapor deposition of carbon nanofibers

الملخص EN

Vertically aligned multi-walled carbon Nano fibers (CNFs) were grown by plasma-enhanced chemical vapor deposition with Ni catalysts on the top of Nano fibers.

Transmission electron microscopy was used to study the morphology and crystallography of Ni catalysts, which are essential for the nucleation and growth of CNFs.

A model for the faceted shape of Ni catalytic particles is proposed.

It is shown that the exposed polyhedral surfaces of Ni catalytic particles for vertically aligned CNFs are composed of {111}, {110}, and {100}, a faceting that appears to be characteristic of the growth atmosphere.