Light activated methylene blue degradation by magnetic Fe80PxC20-x (x = 0, 4, 7 and 13) glassy ribbons

Abstract

The light activated Methylene Blue (MB) degradation performance and magnetic properties of the Fe80PxC20-x (x = 0, 4, 7 and 13) glassy ribbons are investigated in this work. The structure of the as-spun Fe80C20 ribbons is crystalline state while the as-spun Fe80PxC20-x (x = 4, 7 and 13) ribbons is amorphous state. Under dark condition, the degradation efficiency ηDark for MB decreases gradually with increasing P content (cP) in the ribbons, and the stability of Fe-P bonds is higher than Fe-C bonds in annealing Fe80P4C16 ribbons, indicating that Fe-P bonds release less Fe participating in the Fenton-like reaction; under visible light (VL), the ηVL of ribbons increases firstly and then decreases with increasing cP and the ribbon with x = 4 show the highest ηVL, which is consistent with the changing tendency of soft magnetic property of the present ribbons. This work provides a new insight in designing and applying the FePC amorphous alloys.