Kinetics of nanoporous Au formation by chemical dealloying

Kinetics of nanoporous Au formation by chemical dealloying

Porous Au structures were synthesized starting from a crystalline Ag70Au30 alloy by selectively dissolving Ag in a nitric acid solution for selected times. The size of ligaments and pores, the degree of porosity and the specific surface area of all structures were measured. The product between the t...

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Veröffentlicht in:Scripta materialia 2014-04, Vol.76, p.57-60
Hauptverfasser: Pia, Giorgio, Mascia, Michele, Delogu, Francesco
Format: Artikel
Sprache:eng
Schlagworte:
Crystal structure
Formations
Kinetics
Ligaments
Metals and alloys
Nanostructure
Nanostructured material
Nitric acid
Porosity
Porous material
Surface
Surface area
Synthesis
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Zusammenfassung:Porous Au structures were synthesized starting from a crystalline Ag70Au30 alloy by selectively dissolving Ag in a nitric acid solution for selected times. The size of ligaments and pores, the degree of porosity and the specific surface area of all structures were measured. The product between the total surface area and the average ligament size is invariably equal to about 3.5 times the total volume of the solid. This suggests that the porous Au structures are similar to single gyroids.
ISSN:1359-6462
1872-8456
DOI:10.1016/j.scriptamat.2013.12.016