ABSTRACT Nanoporous copper (NPC) with a controllable ligament width was prepared by chemically dealloying Cu45Al45Ti10 amorphous ribbons in dilute HCl solution. X-ray diffraction and scanning electron microscopy analysis confirmed the 3D, bicontinuous, nanoporous structure constituting fcc-Cu ligaments of 39–79 nm thickness. The coarsening of NPC ligaments increased significantly with an increase of HCl concentration, reaction temperature or time. The surface diffusivity and activation energy of NPC were also calculated. Finally, the catalytic activity of NPC was validated with the ultrasound and H2O2-assisted degradation of methyl orange (MO), where 99% MO was degraded within 15 min.

中文翻译：

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Cu-Al-Ti非晶带脱合金制备的纳米多孔铜声催化剂

摘要 通过在稀盐酸溶液中对 Cu45Al45Ti10 非晶带进行化学脱合金制备了具有可控韧带宽度的纳米多孔铜 (NPC)。X 射线衍射和扫描电子显微镜分析证实了构成 39-79 nm 厚度的 fcc-Cu 韧带的 3D、双连续、纳米多孔结构。随着HCl浓度、反应温度或时间的增加，NPC韧带的粗化显着增加。还计算了NPC的表面扩散率和活化能。最后，通过超声波和 H2O2 辅助降解甲基橙 (MO) 验证了 NPC 的催化活性，其中 99% MO 在 15 分钟内被降解。