Bucky papers have been investigated by some research groups, however, due to different qualities of
carbon nanotubes used, various results of strength and electronic properties were reported in the
literatures. In this article, the effects of carbon nanotubes synthesized over different catalysts on the
qualities of bucky papers were systemically investigated. Multi-wall carbon nanotubes were synthesized
over a series of MgO supported catalysts with different weight ratios of Mo and Co. As the ratios of Mo/Co
in the catalysts were increased from 0 to 3, the yields of carbon nanotubes were enhanced from 7 wt% to
400 wt%. However, the yield enhancement of carbon nanotubes was achieved at the expense of higher
proportion of structural defects within carbon nanotubes, which has been proved by Raman spectroscopy
and thermogravimetry analysis. It was demonstrated that the tensile strength of bucky paper
composed of numerous MCNTs bundles strongly depends on the structure of carbon nanotubes used. By
optimizing reaction conditions, a bucky paper with high strain up to 15.36 MPa and electrical conductivity
of 61.17 S cm-1 was obtained by Supercritical Fluid (SCF) drying technique.