In this article, Al75Cu25 (at.%) ribbons were dealloyed by HCl, H2C2O4, H3PO4, and NaOH solutions, respectively, to prepare nanoporous copper (NPC). The dealloying behavior is varied with dealloying solutions, allowing modulating the microstructure and porosity of the NPC. Al75Cu25 ribbons are fully dealloyed in HCl, H2C2O4, and NaOH solutions, whereas they are partially dealloyed in H3PO4 solution. Except the NPC prepared in the NaOH solution, no obvious cracks are traced in other samples. The surface diffusivity (Ds) of Cu atoms along the alloy/solution interfaces is varied with solutions, producing the NPC with different microstructure. NPC with higher specific surface area can be obtained by dealloying the Al75Cu25 ribbons in the HCl solution. Compared with the dealloying in H2C2O4, H3PO4, and NaOH solutions, the dealloying in 10 wt% HCl solution for 25 min at 90 ± 1 °C facilitates the best NPC in this work.

在本文中，分别通过HCl，H 2 C 2 O 4，H 3 PO 4和NaOH溶液对Al 75 Cu 25（at。％）带进行脱合金处理，以制备纳米多孔铜（NPC）。脱合金行为随脱合金溶液而变化，从而可以调节NPC的微观结构和孔隙率。Al 75 Cu 25碳带完全在HCl，H 2 C 2 O 4和NaOH溶液中脱合金，而它们在H 3 PO 4中部分脱合金解。除了在NaOH溶液中制备的NPC外，其他样品中均未发现明显的裂纹。沿着合金/溶液界面的Cu原子的表面扩散率（D s）随溶液而变化，从而产生具有不同微观结构的NPC。通过在HCl溶液中脱铝Al 75 Cu 25带，可以获得比表面积更高的NPC 。与H 2 C 2 O 4，H 3 PO 4和NaOH溶液中的脱合金相比，在10 wt％HCl溶液中在90±1°C下进行25分钟的脱合金有助于在这项工作中获得最佳的NPC。