A highly efficient degradation mechanism of methyl orange using Fe-based metallic glass powders

Scientific Reports
Shenghui XieHaixia Qian

Abstract

A new Fe-based metallic glass with composition Fe76B12Si9Y3 (at. %) is found to have extraordinary degradation efficiency towards methyl orange (MO, C14H14N3SO3) in strong acidic and near neutral environments compared to crystalline zero-valent iron (ZVI) powders and other Fe-based metallic glasses. The influence of temperature (294-328 K) on the degradation reaction rate was measured using ball-milled metallic glass powders revealing a low thermal activation energy barrier of 22.6 kJ/mol. The excellent properties are mainly attributed to the heterogeneous structure consisting of local Fe-rich and Fe-poor atomic clusters, rather than the large specific surface and strong residual stress in the powders. The metallic glass powders can sustain almost unchanged degradation efficiency after 13 cycles at room temperature, while a drop in degradation efficiency with further cycles is attributed to visible surface oxidation. Triple quadrupole mass spectrometry analysis conducted during the reaction was used to elucidate the underlying degradation mechanism. The present findings may provide a new, highly efficient and low cost commercial method for azo dye wastewater treatment.

References

Aug 7, 2003·Environmental Science & Technology·Angela M MooreThomas M Young
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Jun 30, 2015·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Xuan SunYoshinori Kawase

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Citations

Sep 19, 2018·Chemistry, an Asian Journal·Lai-Chang Zhang, Shun-Xing Liang
Nov 23, 2019·Dalton Transactions : an International Journal of Inorganic Chemistry·Jian-Peng DongLi-Ya Wang
Oct 3, 2018·Advanced Materials·Shun-Xing LiangLai-Chang Zhang
Jan 12, 2021·Saudi Journal of Biological Sciences·Md Manjurul HaquePolash Kisku Marcus
Apr 27, 2021·Environmental Science and Pollution Research International·Xue YangKeqiang Qiu
Jul 3, 2021·International Journal of Molecular Sciences·Myroslav SprynskyyAgnieszka Feliczak-Guzik
Aug 21, 2020·Journal of Colloid and Interface Science·Shun-Xing LiangLai-Chang Zhang
Sep 9, 2021·Brazilian Journal of Microbiology : [publication of the Brazilian Society for Microbiology]·José Antonio Vilchis-CarmonaXianwu Guo

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Methods Mentioned

BETA
differential scanning calorimetry
X-ray
scanning electron microscopy

Software Mentioned

ZVI

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