Carbon Materials - Bionanomaterials for Dental Applications - page 321

Table 10.4 Comparison between carbon materials [24]

Material Morphology Surface area Edge face Adhesibility

Natural graphite Flake Small Small Weak

Conventional pyrolytic
carbon

Aggregate Small Small Weak

Fullerene Sphere Large None Weak

Carbon nanotubes Tube Large None Weak

Fibrous/rod-like carbon Fibril Large (Large)* (Strong)*

* Expected properties.
The regular arrays of carbon nanoibers could form a nanoporous
matrix. The porous carbon with regular structures was obtained by
Vinu et al . using the replica synthesis [58]. Figure 10.17A shows the
process of mesoporous carbon materials. In this method, a carbon
sources, such as sucrose, are irst impregnated into silica template
structures, followed by solidiication and template removal, resulting
in nanostructured porous carbon materials.

Figure 10.17 (A) Synthesis of mesoporous carbon materials: (a) CMK-1
from MCM-48; (b) CMK-3 from SBA-15. (B) Synthesis of
carbon nanocage with cross-sectional view for synthesis
and simpliied three-dimensional illustration [58].