Abstract Synthetic dyes have caused serious ecological and environmental threats in our daily lives. Effective and inexpensive dye-degradation methods are desperately perused for decades. In this work, ultrasonic-vibration treatment is found as an effective approach that can dramatically improve the degradation performance of industrial Fe78Si9B13 amorphous powders towards methylene blue. As demonstrated by synchrotron X-ray nano-computed tomography and scanning electron microscope combined with X-ray photoelectron spectroscopy, the micro-channels on the surface or inside of Fe78Si9B13 particles offer a shortcut for fast mass transfer and supply plenty of reactive sites with low density and high energy due to the structural rejuvenation after ultrasonic vibration. It leads to the reduction of the reaction activation energy of degradation under the pseudo-first-order kinetic model and an exceptional decomposition capacity. Our work not only extremely drives down the current costs of wastewater treatments, but also provides a promising approach for tuning the effectivity of alloying catalysts via manipulating the potential energy state of metallic glasses based on the high-frequency mechanical vibration technique.

中文翻译：

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Fe-Si-B无定形粉末作为高能超声振动降解染料的有效催化剂

摘要 合成染料给我们的日常生活造成了严重的生态和环境威胁。几十年来，人们一直在拼命研究有效且廉价的染料降解方法。在这项工作中，发现超声波振动处理是一种有效的方法，可以显着提高工业 Fe78Si9B13 非晶粉末对亚甲蓝的降解性能。正如同步加速器 X 射线纳米计算机断层扫描和扫描电子显微镜结合 X 射线光电子能谱所证明的那样，Fe78Si9B13 颗粒表面或内部的微通道为快速传质提供了一条捷径，并提供了大量低反应性的反应位点。由于超声波振动后的结构更新，密度和高能量。它导致伪一级动力学模型下降解反应活化能的降低和特殊的分解能力。我们的工作不仅极大地降低了当前废水处理的成本，而且为通过基于高频机械振动技术操纵金属玻璃的势能状态来调节合金催化剂的有效性提供了一种有前景的方法。