Role of maze like structure and Y2O3 on Al-based amorphous ribbon surface in MO solution degradation

Abstract

The Al85Co10Y5 (Co10) amorphous ribbon exhibits an excellent degradation performance in polluted water treatment for the first time by degrading methyl orange (MO) dye. Compared with the Al85Fe10Y5 (Fe10) amorphous ribbon for degradation MO solution, the Co10 ribbon has a higher degradation efficiency, a higher TOC removal rate, a lower reaction activation energy, a stronger reusability and a higher corrosion resistance. The Co10 ribbon is not only applicable for acidic MO solution, but also has high degradation efficiency in alkaline MO solution. Compared with the spherical particles on the surface of Fe10 ribbon, the maze like structure on the surface of Co10 ribbon can increase the reaction surface area and improve the degradation efficiency of MO solution. And more O2− radicals by supplying photo catalytic Y2O3 under visible light irradiation and then enhance the degradation of MO solution. This work not only provides a new method with high efficiency and low cost for the degradation of MO solution, but also provides a new research direction for the degradation mechanism of Al-based alloys.