Fabrication of egg-shell-roofed macroporous nickel films by a template-mediated electrodeposition process

Fabrication of tunable pore size of nickel membranes by electrodeposition on colloidal monolayer template

“…The results indicate that positively charged nickel ions adsorb onto the surface of negatively charged colloidal particles, when they migrate near the colloidal particles [14], due to the electrostatic-induced adsorption effect in the electrodeposition solution. When the electrodeposition process starts, the nickel ions, which are away from the colloidal crystal template, will migrate toward the working electrode as they are attracted by the applied potential (−1 V), resulting in an increase of the nickel ion concentration [18]. Hence, in this situation the colloidal particles constructing the template adsorb more nickel ions than they do in the case without the application of potential.…”