Growth of CN_x Nanotubes Films on Ni Substrates

The CNx nanotubes films were fabricated by pyrolyzing ethylenediamine on Ni substrates at 860℃. The growth of CNx nanotubes on Ni substrates pretreated in different conditions was investigated. It is found that the Ni substrates pretreated in different conditions have different catalytic effects on the growth of CNx nanotubes, and the CNx nanotubes with bamboo-like structure grow preferentially on the Ni substrate dipped in HF for 10 min and followed by ultrasonically cleaned in ethanol.