Facile Synthesis of Highly Aligned Multiwalled Carbon Nanotubes from Polymer Precursors
Figure 5
(a)
SEM image of the barrier side of synthesized AAO membrane with 20 nm pores, Al
removed, filled with carbonized MWNTs (600), and etched the barrier layer for
10 min. in 1 M NaOH; (b) after ~15 min. etching MWNTs with caps start to detach
from the pore walls; (c) after 20 min. etching, the pores are widened and MWNTs
are standing in the pores; (d) same as (c) with higher magnification, the MWNT
has a grayish center with bright rim indicates the cap still remains.
