Rapid degradation of Direct Blue dye by Co-based amorphous alloy wire

Abstract

Amorphous alloys exhibit excellent catalytic performance in the degradation of azo dye wastewater due to their unique atomic structure. Unfortunately, amorphous alloys with both high degradation efficiency and considerable reusability are still unsatisfactory for a long time. In this work, a new Co-Mo-B amorphous alloy wire reported can degrade the Direct Blue 6 (DB 6) solution within 2 min with a degradation efficiency of 99%. Importantly, the novel Co-based amorphous alloy also exhibits excellent reusability with 97% degradation efficiency after 20 cycles. The superior degradation performance and good long-term reactivity are mainly due to the synergistic coordination of Co and Mo bimetals and the self-exfoliation effect of the corrosion products. Such findings can provide a new idea for the development of amorphous alloys in the degradation of azo dye wastewater.