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Bi‐Functional Mechanism in Degradation of Toxic Water Pollutants by Catalytic Amorphous Metals
Author(s) -
Das Santanu,
Garrison Seth,
Mukherjee Sundeep
Publication year - 2016
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.201500239
Subject(s) - catalysis , degradation (telecommunications) , x ray photoelectron spectroscopy , materials science , amorphous solid , photochemistry , aqueous solution , raman spectroscopy , pollutant , spectroscopy , inorganic chemistry , nuclear chemistry , chemical engineering , chemistry , organic chemistry , quantum mechanics , telecommunications , physics , optics , computer science , engineering
The authors report on the high catalytic activity and bi‐functional catalysis mechanism of amorphous metals in degrading AZO Dye, a toxic water pollutant and carcinogen. Aluminum‐based metallic glass was found to completely degrade AZO dye at room temperature without any toxic by‐products. The high catalytic activity originates from the simultaneous ionization of the transition metals, which act as electron donors for rapid degradation of AZO dye in an aqueous medium. The dye degradation rate and catalytic activity were characterized via UV–VIS absorption spectroscopy. The rate of dye degradation was significantly faster compared to state‐of‐the‐art zero valent iron. The dye degradation mechanism was studied using Raman and IR spectroscopy combined with X‐ray photoelectron spectroscopy.