Abstract The Fe78Si13B9 amorphous alloy ribbons and high-entropy amorphous alloy ribbons of (FeCoNi)78Si13B9 were prepared by melt spinning method. The decolorization performances of these ribbons were investigated in details. It was interesting that Orange Ⅱ solution of 40 mg/L can be degraded almost completely within 70 min and a reduction 52.4% in COD (Chemical Oxygen Demand) value using Fe78Si13B9 amorphous ribbons, indicating the prominent capacity of alloys on the degradation of azo dyes. As for amorphous ribbons (FeCoNi)78Si13B9, they just presented a physical adsorption process, with no chemical degradation of dye molecules under the same conditions. Furthermore, the Fe78Si13B9 amorphous ribbons possess a higher decolorization reaction rate (kobs = 0.071 min−1) compared to the (FeCoNi)78Si13B9 ribbons, together with converting dye molecules to harmless micromolecule inorganic substances, which is of practical significance from the perspective of environmental protection. In addition, all the degradation process in this work fit well with the pseudo-first-order kinetic model. The findings are attractive, valuable and promising for the practical applications and they have important implications in developing Fe-based high-entropy alloys for functional application materials in the field of wastewater treatment.

中文翻译：

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Fe78Si13B9和(FeCoNi)78Si13B9高熵非晶合金薄带的降解性能

摘要 采用熔融纺丝法制备了Fe78Si13B9非晶合金薄带和(FeCoNi)78Si13B9高熵非晶合金薄带。详细研究了这些色带的脱色性能。有趣的是，使用 Fe78Si13B9 非晶带，40 mg/L 的 Orange Ⅱ溶液可以在 70 分钟内几乎完全降解，COD（化学需氧量）值降低 52.4%，表明合金对偶氮染料的降解能力突出. 对于非晶带（FeCoNi）78Si13B9，它们只是呈现了一个物理吸附过程，在相同条件下没有染料分子的化学降解。此外，与 (FeCoNi)78Si13B9 带相比，Fe78Si13B9 非晶带具有更高的脱色反应速率（kobs = 0.071 min-1），连同将染料分子转化为无害的小分子无机物，从环境保护的角度来看具有实际意义。此外，这项工作中的所有降解过程都很好地符合伪一级动力学模型。这些发现对实际应用具有吸引力、价值和前景，它们对开发用于废水处理领域功能应用材料的铁基高熵合金具有重要意义。