Application of Fe-Based Amorphous Alloy in Industrial Wastewater Treatment: A Review

Abstract

Amorphous alloy (MGs) is a solid alloy with disordered atomic accumulation obtained by ultra-rapid solidification of alloy melt. The atom deviates from the equilibrium position and is in metastable state. Up to now, a large number of MGs have been applied to the treatment of dye and heavy metal contaminated wastewater and ideal experimental results have been obtained. However, there is no literature to systematically summarize the chemical reaction and degradation mechanism in the process of degradation. On the basis of reviewing the classification, application, and synthesis of MGs, this paper introduces in detail the chemical reactions such as decolorization, mineralization, and ion leaching of Fe-based amorphous alloy (Fe-MGs) in the degradation of organic and inorganic salt wastewater through direct reduction or advanced oxidation mechanism. Compared with crystalline materials, the higher reaction rate of Fe-MGs can be attributed to lower activation energy, negative redox potential, loose product layer, and band structure with downward shift of valence band top. Finally, some suggestions and prospects are put forward for the limitations and research prospects of MGs in the environmental field, which provides a new idea for the synthesis of new environmental functional materials.

Efficient Catalytic Degradation of Azo Dyes from Textile Wastewater by Nano and Micro Amorphous Alloys

“…Our review presents an important contribution to the literature by complimenting the work by Zhang et al [55] . and Pei et al [56] . and provides a novel, focused look at the studies which utilized amorphous alloys in dye degradation processes.…”

“…This article reviews the studies related to the utilization of amorphous alloys in dye degradation processes: (1) the types of production methods used in the preparation of amorphous alloys; (2) the subcategorization of amorphous alloys; and (3) whether they are integrated with other techniques or not. Some reviews have already been undertaken in this area, most notably those by Zhang et al [55] and Pei et al [56] Zhang et al [55] similarly reviewed the studies related to the utilization of amorphous alloys in dye degradation processes, however, they did not subcategorize the amorphous alloys and investigate their dye degradation capabilities separately. The comprehensive review by Pei et al [56] did focus on only Fe-based amorphous alloys, and did not focus on non-ferrous metal based amorphous alloys.…”

“…Some reviews have already been undertaken in this area, most notably those by Zhang et al [55] . and Pei et al [56] . Zhang et al [55] .…”

“…Some reviews have already been undertaken in this area, most notably those by Zhang et al [55] and Pei et al [56] Zhang et al [55] similarly reviewed the studies related to the utilization of amorphous alloys in dye degradation processes, however, they did not subcategorize the amorphous alloys and investigate their dye degradation capabilities separately. The comprehensive review by Pei et al [56] did focus on only Fe-based amorphous alloys, and did not focus on non-ferrous metal based amorphous alloys. Our review presents an important contribution to the literature by complimenting the work by Zhang et al [55] and Pei et al [56] and provides a novel, focused look at the studies which utilized amorphous alloys in dye degradation processes.…”

Latest Advances in Manufacturing and Machine Learning of Bulk Metallic Glasses

“…Amorphous metal alloys (i.e., metallic glasses) are of great technological interest because they exhibit a variety of unique properties, including a very large elastic limit because of the lack of dislocations that induce plastic deformation [1] and high resistance to corrosion and wear because of the lack of grain boundaries, [2,3] among many other useful properties. Thus, a number of reviews have been written on these materials, including some early reviews that effectively describe foundational issues related to the thermodynamics and kinetics of these types of alloys, [4][5][6][7] applications in cutting tools and gears, [8,9] medical implants, [10][11][12][13] space technologies, [14] structural components, [15] wastewater treatment, [16] catalysis, [17,18] and countless others. [19] As new applications are recognized and explored, research efforts to improve the processing and manufacturing of metallic glasses continue to be of interest, [20][21][22][23][24] resulting in a myriad of patents and patent activity.…”