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首页> 外文期刊>The journal of physics and chemistry of solids >Effects of the addition of Co, Ni or Cr on the decolorization properties of Fe-Si-B amorphous alloys
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Effects of the addition of Co, Ni or Cr on the decolorization properties of Fe-Si-B amorphous alloys

机译：CO，Ni或Cr加入对Fe-Si-B非晶合金的脱色性能的影响

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摘要

Fe-based amorphoui alloys show great potential in degrading azo dyes and other organic pollutants, and are widely investigated as a kind of environmental-friendly materials for wastewater remediation. In this paper, the effects of Co, Ni or Cr addition on the decolorization properties of Fe-Si-B amorphous alloys were studied, and the mechanism of their different effects was analyzed. Co addition could lower the activation energy of Fe-Si-B amorphous alloys in decolorizing azo dyes, and had no weakening effect on the decolorization capability of Fe-Si-B amorphous alloys. Ni addition led to partial crystallization of Fe-Si-B amorphous alloys, and the decolorization mechanism at low temperatures changed from chemical degradation to physical adsorption. Cr addition could enhance the corrosion resistance of Fe-Si-B amorphous alloys, but the amorphous alloys completely lost the decolorization capability no matter at lower or higher temperatures. The results of X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM) indicated that the addition of Co, Ni or Cr could generate different surface structures that had significant influences on the decolorization process. Our work demonstrated that the effiecient decolorization of azo dyes by Fe-based alloys could be realized only when amorphous nature and incompact surface structure were simultaneously achieved for the alloys.
机译：Fe-碱性Amorphoui合金在降解偶氮染料和其他有机污染物中表现出极大的潜力，并被广泛研究为一种用于废水修复的环保材料。在本文中，研究了CO，Ni或Cr添加对Fe-Si-B非晶合金的脱色性能的影响，分析了它们不同效果的机制。 Co添加可以降低Fe-Si-B非晶合金的活化能量在脱色偶氮染料中，对Fe-Si-B非晶合金的脱色能力没有弱化。 Ni加法导致Fe-Si-B非晶合金的部分结晶，低温下的脱色机制从化学降解变为物理吸附。 CR添加可以提高Fe-Si-B非晶合金的耐腐蚀性，但无定形合金完全在较低或更高的温度下完全丧失脱色能力。 X射线光电子能谱（XPS）和扫描电子显微镜（SEM）的结果表明，加入CO，Ni或Cr可以产生对脱色过程具有显着影响的不同表面结构。我们的工作表明，只有当合金同时实现无定形性质和浓度的表面结构时，才能实现二唑染料的偶氮染料的脱色。

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