8.4 Electrochemical Dealloying
293
Fig. 8.13 Nanoporous gold films obtained from benzyl alcohol solution of 1.6 M ZnCl 2 (a and
b) and 1.321 M ZnCl 2 + 0.264 M SnCl 2 (c and d) after 30 deposition–dealloying cycles at 120 °C.
Reprinted from [253]. Copyright (2009), with permission from Elsevier
D
j / a.u.
E / a.u.
S
(a)
(b)
D
S
j / a.u.
t / a.u.
Fig. 8.14 Electrochemical measurement results for stripping and dealloying. a Anodic-going
sweeps corresponding to stripping (S) and dealloying (D). The second peak at more positive potential than the stripping peak is responsible for dealloying. The decay of the dealloying peak is longer
than that of the stripping peak due to the solid-state diffusion of the reactant. b Chronoamperometric curves for stripping and dealloying at a fixed electrode potential. The occurrence of a new
plateau in the chronoamperometric data is associated with dealloying. The schemes are based on
the measurements published in Refs. [194, 254, 258, 261]
293
Fig. 8.13 Nanoporous gold films obtained from benzyl alcohol solution of 1.6 M ZnCl 2 (a and
b) and 1.321 M ZnCl 2 + 0.264 M SnCl 2 (c and d) after 30 deposition–dealloying cycles at 120 °C.
Reprinted from [253]. Copyright (2009), with permission from Elsevier
D
j / a.u.
E / a.u.
S
(a)
(b)
D
S
j / a.u.
t / a.u.
Fig. 8.14 Electrochemical measurement results for stripping and dealloying. a Anodic-going
sweeps corresponding to stripping (S) and dealloying (D). The second peak at more positive potential than the stripping peak is responsible for dealloying. The decay of the dealloying peak is longer
than that of the stripping peak due to the solid-state diffusion of the reactant. b Chronoamperometric curves for stripping and dealloying at a fixed electrode potential. The occurrence of a new
plateau in the chronoamperometric data is associated with dealloying. The schemes are based on
the measurements published in Refs. [194, 254, 258, 261]