Dual-Mode Nanoporous Copper by Dealloying Al-Cu-Nacl Bulk Alloys and Its High Degradation Efficiency Toward Methyl Orange

Formation mechanism of nanoporous silver during dealloying with ultrasonic irradiation

“…Dealloying of the samples was then performed at 45 C under different conditions: (1) under free corrosion in a 10 wt% HNO 3 aqueous solution for 5, 10 and 20 min; (2) with UI at the constant frequency of 28 kHz in a 10 wt% HNO 3 aqueous solution for 5, 10 and 20 min; and (3) with UI at the frequency of 40 kHz in a 10 wt% HNO 3 aqueous solution for 5, 10 and 20 min. The dealloyed samples were then rinsed three or four times sequentially using alcohol and distilled water.…”

“…Due to their unique structure-related properties, nanoporous metals that can exhibit a bi-continuous interpenetrating ligament/channel structure have attracted intense research interest in recent years in many elds such as catalysis, sensing, optical, and actuation. [1][2][3] There are many methods to prepare nanoporous metals up to now. The template method which is the process of depositing the metallic material into the hole or surface of the template by physical or chemical methods and removing the template to obtain the nanometer material with the standard morphology and size of the template was a common method used for the fabrication of nanoporous materials.…”

Nanoporous Dealloyed Metal Materials Processing and Applications─A Review

“…This aspect means that the pore size across the dealloyed porous Cu material may vary from tens up to a few hundreds of nm as reported for large sacrificial metal content alloys. ,, Further studies on the coarsening of the ligaments across non-Au-based porous materials are required to correlate not only the pitting mechanisms but also the metal atom diffusion processes to the oxidation and crystallographic states of the materials. Such studies are required to link the impact of the dealloying conditions to the final structures achieved …”