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Preparation of Fe-Si-B amorphous ribbons with high specific surface area and their high-efficiency electrocatalytic removal of Methylene Blue
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DOI：10.1016/j.mtla.2026.102811.png)
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Abstract
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In this study, an iron-silicon-boron amorphous alloy ribbon catalyst with high specific surface area was prepared. Using graphite and the raw amorphous alloy as controls, its electrocatalytic removal performance towards methylene blue was systematically investigated. The electrode energy consumption, mass loss and removal mechanism of the catalyst were analyzed, and the influence laws of key process parameters were clarified, laying a theoretical foundation for subsequent microstructure regulation via heat treatment. The amorphous catalyst exhibits outstanding catalytic activity: benefiting from its high specific surface area and accelerated interfacial electron transfer rate, its maximum removal efficiency is 13 times that of graphite and 16.97% higher than that of the original amorphous alloy. Meanwhile, it possesses the advantages of stable mass loss (approximately 10%) and low energy consumption. Mechanistic research reveals that the removal process is dominated by electrocoagulation centered on iron ion coprecipitation, supplemented by the oxidation of hydroxyl radicals and superoxide anion radicals. Abundant active sites, efficient electron transfer, and the synergistic coupling effect of electrocoagulation and electrooxidation collectively endow it with excellent electrocatalytic removal performance. This research provides an important reference for the development of high-efficiency amorphous alloy catalysts applicable to dye wastewater treatment.
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