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- Title
Preparation, characterization and application of Fe<sub>72</sub>Cu<sub>1</sub>Co<sub>5</sub>Si<sub>9</sub>B<sub>13</sub> metallic glass catalyst in degradation of azo dyes.
- Authors
Lassoued, A.; Li, J. F.
- Abstract
The presence of pollutants such as azo dyes in industrial wastewaters has become a major global problem and has attracted a large number of researchers to find solutions. In present work, a new type of Fe-based amorphous ribbons with Fe72Cu1Co5Si9B13 (at.%) composition were prepared by melt-spinning technique. Its behavior as a catalyst in the as-quenched and annealed sates in decomposing the C32H20N6S4O14Na4 (Direct Blue 6) azo dyes in aqueous solution was investigated in details. It is shown that the ribbon with amorphous structure is the most effective in the degradation of azo dyes and the decolorization rate increases with the increase of reaction temperature and ribbon dosage, but decreases with increasing initial solution pH and concentration of Direct Blue 6. The decolorization process follows a first-order exponential kinetic model with very low activation energy. The amorphous ribbon has good structural stability and no loss of performance after five cycles. This work indicates the enormous potential of Fe72Cu1Co5Si9B13 amorphous ribbon as catalyst in remediation of wastewater contaminated with azo dyes.
- Subjects
AZO dyes; METALLIC glasses; CATALYSTS; AMORPHOUS alloys; ACTIVATION energy
- Publication
Journal of Materials Science: Materials in Electronics, 2021, Vol 32, Issue 16, p21727
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-021-06693-w