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Fig. 7 SEM images of platinum a discs and b hexagons prepared through a template-assisted
electrodeposition route (adapted from Ref. [
113
] with permission from American Chemical
Society)
Scheme 3 Electric field-dependent morphological evolution of platinum structures using PAM.
(i) PAM with one side evaporated with Au film for electrical contact. (ii) Formation of hexagonal,
disc and multipod structures of Pt over alumina membrane at potentials -0.3, -0.5 and -0.7 V
respectively.
(iii)
Dissolution
of
the
membrane
in
0.1 M
NaOH
and
release
of
different
morphology
platinum
structures
along
with
the
nanorods
(adapted
from
Ref.
[
113
]
with
permission from American Chemical Society)
multipod is more than 6, having a common origin with significantly longer length
(ca. 500 nm). This way of preparing Pt multipods using an electric field-assisted
evolution of morphology is depicted in Scheme
3
. In addition to these multipods,
nanorods of platinum are also formed inside the porous structures, as usually
expected from template-assisted synthesis, which could be separated easily. More
significantly, here the shape control was accomplished solely by the modulation of
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