Fabrication of nanoporous palladium by dealloying and its thermal coarsening

摘要: Abstract Nanoporous Pd with an average ligament size of 5–20 nm was fabricated by dealloying 0.2 Co 0.8 alloy. An electrochemical potential +0.5 V (vs saturated calomel electrode) on the initial alloy led to dissolution in H 2 SO 4 aqueous solution. However, unlike nanoporous Au fabrication from Au–Ag alloy, free corrosion did not result a structure; must have been applied generate structure Pd–Co Thermal coarsening is also investigated. Heating increased up 650 nm. It suggested that solid state process like recrystallization, rather than melting, responsible for thermal Pd.