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Ultrafast degradation of azo dyes catalyzed by cobalt-based metallic glass

Reactivity and mass loss are considered mutually exclusive in conventional zero-valent metal (ZVM) technology to treat environmental contaminants. Here, we report the outstanding performance of Co-based metallic glass (MG) in degrading an aqueous solution of azo dye, thus eliminating this trade-off....

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Autores principales: Qin, X. D., Zhu, Z. W., Liu, G., Fu, H. M., Zhang, H. W., Wang, A. M., Li, H., Zhang, H. F.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4677396/
https://www.ncbi.nlm.nih.gov/pubmed/26656918
http://dx.doi.org/10.1038/srep18226
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author Qin, X. D.
Zhu, Z. W.
Liu, G.
Fu, H. M.
Zhang, H. W.
Wang, A. M.
Li, H.
Zhang, H. F.
author_facet Qin, X. D.
Zhu, Z. W.
Liu, G.
Fu, H. M.
Zhang, H. W.
Wang, A. M.
Li, H.
Zhang, H. F.
author_sort Qin, X. D.
collection PubMed
description Reactivity and mass loss are considered mutually exclusive in conventional zero-valent metal (ZVM) technology to treat environmental contaminants. Here, we report the outstanding performance of Co-based metallic glass (MG) in degrading an aqueous solution of azo dye, thus eliminating this trade-off. Ball-milled Co-based MG powders completely degrade Acid Orange II at an ultrafast rate. The surface-area-normalized rate constant of Co-based MG powders was one order of magnitude higher than that of Co-based crystalline counterparts and three orders of magnitude higher than that of the widely studied Fe(0) powders. The coordinatively unsaturated local structure in Co-based MG responds to the catalysis for degradation, resulting in very low mass loss. Wide applicability and good reusability were also present. Co-based MG is the most efficient material for azo dye degradation reported thus far, and will promote the practical application of MGs as functional materials.
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spelling pubmed-46773962015-12-17 Ultrafast degradation of azo dyes catalyzed by cobalt-based metallic glass Qin, X. D. Zhu, Z. W. Liu, G. Fu, H. M. Zhang, H. W. Wang, A. M. Li, H. Zhang, H. F. Sci Rep Article Reactivity and mass loss are considered mutually exclusive in conventional zero-valent metal (ZVM) technology to treat environmental contaminants. Here, we report the outstanding performance of Co-based metallic glass (MG) in degrading an aqueous solution of azo dye, thus eliminating this trade-off. Ball-milled Co-based MG powders completely degrade Acid Orange II at an ultrafast rate. The surface-area-normalized rate constant of Co-based MG powders was one order of magnitude higher than that of Co-based crystalline counterparts and three orders of magnitude higher than that of the widely studied Fe(0) powders. The coordinatively unsaturated local structure in Co-based MG responds to the catalysis for degradation, resulting in very low mass loss. Wide applicability and good reusability were also present. Co-based MG is the most efficient material for azo dye degradation reported thus far, and will promote the practical application of MGs as functional materials. Nature Publishing Group 2015-12-14 /pmc/articles/PMC4677396/ /pubmed/26656918 http://dx.doi.org/10.1038/srep18226 Text en Copyright © 2015, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Qin, X. D.
Zhu, Z. W.
Liu, G.
Fu, H. M.
Zhang, H. W.
Wang, A. M.
Li, H.
Zhang, H. F.
Ultrafast degradation of azo dyes catalyzed by cobalt-based metallic glass
title Ultrafast degradation of azo dyes catalyzed by cobalt-based metallic glass
title_full Ultrafast degradation of azo dyes catalyzed by cobalt-based metallic glass
title_fullStr Ultrafast degradation of azo dyes catalyzed by cobalt-based metallic glass
title_full_unstemmed Ultrafast degradation of azo dyes catalyzed by cobalt-based metallic glass
title_short Ultrafast degradation of azo dyes catalyzed by cobalt-based metallic glass
title_sort ultrafast degradation of azo dyes catalyzed by cobalt-based metallic glass
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4677396/
https://www.ncbi.nlm.nih.gov/pubmed/26656918
http://dx.doi.org/10.1038/srep18226
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