Abstract Metallic glasses (MGs) with their intrinsic disordered atomic structure and widely controllable atomic components have recently emerged as fascinating functional materials in wastewater treatment. Compared to crystalline alloys, the less-noble atomic components in monolithic metallic glass are more efficient to be selectively dissolved during dealloying process. This work reported a facile chemical dealloying approach to fabricate a void channels-like structured MG with the elemental components of Fe73.5Si13.5B9Cu1Nb3 for methylene blue (MB) degradation. Results indicated that the dealloyed Fe73.5Si13.5B9Cu1Nb3 MGs with the void channels-like morphology presented a significant improvement of catalytic efficiency and reusability. The dye degradation reaction rate (kobs) of the dealloyed Fe73.5Si13.5B9Cu1Nb3 MGs presented 3 times higher than their as-spun MGs. More importantly, the dealloyed Fe73.5Si13.5B9Cu1Nb3 MGs can be reused up to 25 times without significantly loosing catalytic efficiency. It was also found that the dealloyed Fe73.5Si13.5B9Cu1Nb3 MGs exhibited a greater corrosion resistance in the simulated dye solution compared to the as-spun ribbons, demonstrating a robust self-healing ability in catalytic activity. This work provides a novel view for designing MG catalysts with high efficiency and stability in worldwide energy and environmental concerns.

中文翻译：

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具有空隙通道状结构的化学脱合金铁基金属玻璃，用于催化中高度增强的过硫酸盐活化

摘要 金属玻璃 (MGs) 具有固有的无序原子结构和广泛可控的原子成分，最近成为废水处理中引人入胜的功能材料。与晶体合金相比，单片金属玻璃中非贵重的原子成分在脱合金过程中更有效地被选择性溶解。这项工作报告了一种简便的化学脱合金方法，用于制造具有 Fe73.5Si13.5B9Cu1Nb3 元素成分的空隙通道状结构 MG，用于亚甲蓝 (MB) 降解。结果表明，具有空隙通道状形态的脱合金 Fe73.5Si13.5B9Cu1Nb3 MGs 的催化效率和可重复使用性显着提高。脱合金 Fe73.5Si13 的染料降解反应速率 (kobs)。5B9Cu1Nb3 MG 呈现出比其初纺 MG 高 3 倍。更重要的是，脱合金的 Fe73.5Si13.5B9Cu1Nb3 MGs 可以重复使用 25 次而不会显着降低催化效率。还发现脱合金的 Fe73.5Si13.5B9Cu1Nb3 MGs 在模拟染料溶液中表现出比初纺丝带更高的耐腐蚀性，显示出强大的催化活性自修复能力。这项工作为在全球能源和环境问题中设计具有高效率和稳定性的 MG 催化剂提供了新的视角。与初纺色带相比，5B9Cu1Nb3 MGs 在模拟染料溶液中表现出更高的耐腐蚀性，显示出强大的催化活性自修复能力。这项工作为在全球能源和环境问题中设计具有高效率和稳定性的 MG 催化剂提供了新的视角。与初纺色带相比，5B9Cu1Nb3 MGs 在模拟染料溶液中表现出更高的耐腐蚀性，显示出强大的催化活性自修复能力。这项工作为在全球能源和环境问题中设计具有高效率和稳定性的 MG 催化剂提供了新的视角。