Synthesis and Optimization of MWCNTs on Co-NiMgO by Thermal CVD

Abstract EN

Multiwalled carbon nanotubes (MWCNTs) were prepared by the thermal chemical vapor deposition (CVD) technique.

Monometallic and bimetallic Co and Ni combinations were used as a catalyst on MgO support.

The mixer of H2/C2H2 was used as a carbon source.

The prepared CNTs were found to possess different shapes, morphologies, and sizes.

Maximum yield was found for 50% Co (MgO: 50% and Ni: 0%) catalyst at 600C∘.

Scanning electron microscopy (SEM) and high-resolution transmission electron microscopy (HRTEM) techniques were used for structural analysis.

Raman spectra were taken to investigate the quality and crystalline perfection of the prepared CNTs.

The ratio of D- and G-bands (ID/IG) was measured from these spectra.