Page 101 - Environmental Nanotechnology Applications and Impacts of Nanomaterials

Nanomaterials Fabrication 87

C 60 O 3
C O
C O 2 60 4
60
a.i. (arb units) C 60 O C O 5 C O 6
60

60
C O 7
60
C 60 C O 9
60
C O 8
60
C O 10
60
700 750 800 850 900
Figure 3.42 MALDI-TOF-MS for C 60 O n products from the oxidation of C 60 by MTO/H 2 O 2
in the presence of 4-bromopyrazole.

Single-walled carbon nanotubes are by definition fullerene-based
materials. Their structure consists of a graphene sheet rolled into a tube
and capped by half a fullerene (Figure 3.43). The carbon atoms in a SWNT,
2
like those in a fullerene, are sp hybridized. They form a hexagonal ring

(a)

(b)

(c)

Figure 3.43 Structure of single-walled carbon nanotubes (SWNTs) with
(a) armchair, (b) zigzag, and (c) chirality.