Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/115797
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Type: Journal article
Title: Ultra-sustainable Fe₇₈Si₉B₁₃ metallic glass as a catalyst for activation of persulfate on methylene blue degradation under UV-Vis light
Other Titles: Ultra-sustainable Fe(78)Si(9)B(13) metallic glass as a catalyst for activation of persulfate on methylene blue degradation under UV-Vis light
Author: Jia, Z.
Duan, X.
Zhang, W.
Wang, W.
Sun, H.
Wang, S.
Zhang, L.
Citation: Scientific Reports, 2016; 6(1):38520-1-38520-10
Publisher: Nature Publishing Group
Issue Date: 2016
ISSN: 2045-2322
2045-2322
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Zhe Jia, Xiaoguang Duan, Wenchang Zhang, Weimin Wang, Hongqi Sun, Shaobin Wang and Lai-Chang Zhang
Abstract: Stability and reusability are important characteristics of advanced catalysts for wastewater treatment. In this work, for the first time, sulfate radicals (SO₄∙−) with a high oxidative potential (E⁰ = 2.5–3.1 V) were successfully activated from persulfate by a FeFe₇₈Si₉B₁₃ metallic glass. This alloy exhibited a superior surface stability and reusability while activating persulfate as indicated by it being used for 30 times while maintaining an acceptable methylene blue (MB) degradation rate. The produced SiO₂ layer on the ribbon surface expanded strongly from the fresh use to the 20th use, providing stable protection of the buried Fe. MB degradation and kinetic study revealed 100% of the dye degradation with a kinetic rate k = 0.640 within 20 min under rational parameter control. The dominant reactive species for dye molecule decomposition in the first 10 min of the reaction was hydroxyl radicals (∙OH, E⁰ = 2.7 V) and in the last 10 min was sulfate radicals (SO₄∙−), respectively. Empirical operating variables for dye degradation in this work were under catalyst dosage 0.5 g/L, light irradiation 7.7 μW/cm², and persulfate concentration 1.0 mmol/L. The amorphous Fe₇₈Si₉B₁₃ alloy in this work will open a new gate for wastewater remediation.
Description: Published: 06 December 2016
Rights: © The Author(s) 2016. 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/
RMID: 0030095313
DOI: 10.1038/srep38520
Grant ID: http://purl.org/au-research/grants/arc/DP130103592
Appears in Collections:Chemical Engineering publications

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