|About this Abstract
||2020 TMS Annual Meeting & Exhibition
||Functional Nanomaterials 2020: Translating Innovation into Pioneering Technologies
||N-54: Fabrication of Bilayer Nanoporous Copper from Rapidly Solidified Al70Cu30 Ribbons by Chemical Dealloying Technique
||Hailan Ma, Bingge Zhao, Kai Ding, Yulai Gao
|On-Site Speaker (Planned)
In this paper, nanoporous copper (NPC) was prepared by chemical dealloying from the Al70Cu30 alloy (at. %). The dealloying of Al70Cu30 in 4.2 vol. % HCl solution facilitated the bilayer NPC ribbons with various morphology. During the dealloying process, Al atoms in the α-Al and Al2Cu phases could be easily etched off. The results showed that the formation of pores was simultaneously controlled by the dissolution of Al and the diffusion of Cu atoms in the alloy/electrolyte interface. The resultant NPC ribbons presented a bimodal pore size distribution, namely macroporous channels (~100 nm) and mesoporous (~30 nm). The specific surface area of the NPC was determined as 25.24 ± 0.08 m2 g-1 through N2 adsorption/desorption experiment and Brunauer-Emmett-Teller (BET) analysis. Such high porosity and surface-area-to-volume ratio of the NPC reveals its potential application in catalysis, sensors, actuators and fuel cells, etc.
||Planned: Supplemental Proceedings volume