Excellent long-term reactivity of inhomogeneous nanoscale Fe-based metallic glass in wastewater purification

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  • ReceivedAug 19, 2019
  • AcceptedOct 10, 2019
  • PublishedNov 7, 2019



This work was financially supported by the National Natural Science Foundation of China(NSFC,51871129,51571127)

the National Key Basic Research and Development Programme(2016YFB0300502)

and the Natural Science Foundation of Jiangsu Province(BK20190480)


This work was financially supported by the National Natural Science Foundation of China (NSFC, 51871129 and 51571127), the National Key Basic Research and Development Programme (2016YFB0300502), and the Natural Science Foundation of Jiangsu Province (BK20190480). The author Chen SQ appreciates the help from Heng-Wei Luan, Jia-Cheng Ge, Si-Nan Liu and Dr. Sudheer Kumar Yadav.

Interest statement

The authors declare that they have no conflict of interest.

Contributions statement

Chen SQ designed and performed most of the experiments and wrote the manuscript with support from Hahn H, Shao Y, Yao KF and Zhao W. Hui KZ and Dong LZ performed the experiments of degradation of azo dyes. Li Z prepared the ribbons. Zhang QH and Gu L performed the TEM experiments. Lan S and Ke Y conducted the SANS experiments. Shao Y, Hahn H and Yao KF conceived and supervised the study. All authors contributed to the general discussion.

Author information

Shuang-Qin Chen received her PhD degree in materials science from Tsinghua University under the supervision of Prof. Kefu Yao in 2018. Currently, she is working at Nanjing University of Science and Technology as an assistant professor. Her present research interests focus on the catalytic properties of metallic glasses.

Yang Shao is an associate professor of the School of Materials Science and Engineering at Tsinghua University. He received his BE degree in 2002 and Master degree in 2004 from Tsinghua University, and received his PhD degree in 2009 from McMaster University. After postdoc research in the Canadian Centre for Electron Microscopy, he joined in Tsinghua University in 2010. Dr. Shao’s research interests mainly focus on the fundamentals and applications of advanced metallic alloys.

Supplementary data

Supplementary information

Supporting information is available in the online version of the paper.


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  • Figure 1

    (a) XRD pattern, (b) DSC curve, (c) HRTEM image and (d) HAADF image and its corresponding EDS images of Fe-MGI.

  • Figure 2

    (a) Degradation curves of Fe-MGI, Fe-MG and C-ZVI. UV-vis absorption spectra of Orange II by Fe-MGI (b) and the decomposition products of Orange II degraded by Fe-MGI (c). Experimental conditions: C0 of 25 mg L−1, solution volume of 250 mL, ribbon dosage of 10 g L−1, temperature of 25°C, pH value of 6.

  • Figure 3

    (a) OCP curves and (b) potentio-dynamic polarization curves of Fe-MGI and Fe-MG before and after the degradation of Orange II.

  • Figure 4

    SEM images of Fe-MGI’s surface morphologies after degradation of Orange II: (a) at low magnefication, (b) enlarged reacted region, (c) and (d) enlarged flowerlike structure corrosion products, and (e) further enlarged nanoporous reacted regions. Experimental conditions: C0 of 25 mg L−1, solution volume of 250 mL, ribbon dosage of 10 g L−1, temperature of 25°C, pH value of 6.

  • Figure 5

    Degradation curves of Fe-MGI under different environments: (a) various C0s of Orange II, (b) environment temperatures, (c) the Arrhenius plot for the estimation of the activation energy in degradation of Orange II by Fe-MGI, and (d) different pH values. Experimental conditions: C0 of 25 mg L−1, solution volume of 250 mL, ribbon dosage of 10 g L−1, temperature of 25°C, pH value of 6, except for noted variates.

  • Figure 6

    SEM images of the surface morphology of Fe-MGI after degradation of Orange II solution at pH 10, (a) low enlarged scale SEM image, (b) enlarged reacted region corresponded B region in (a), (c) enlarged cracks in precipitated products corresponded C region in (b), and (d) enlarged precipitated products corresponded D region in (c). Experimental conditions: C0 of 25 mg L−1, solution volume of 250 mL, ribbon dosage of 10 g L−1, temperature of 25°C.

  • Figure 7

    Catalytic properties of Fe-MGI evaluated by degradation of MB in Fenton-like process using various treatment parameters: (a) dosages of Fe-MGI, (b) concentrations of H2O2, (c) C0s of MB, (d) initial pH values and (e) temperatures. (f) The Arrhenius plot for the estimation of the activation energy. If not mentioned, experimental conditions are C0 of 20 mg L−1, solution volume of 250 mL, ribbon dosage of 0.5 g L−1, temperature of 25°C and pH value of 3.

  • Figure 8

    (a) Cyclic degradation curves of Orange II solution with C0 of 100 mg L−1 by Fe-MGI, and (b) degradation efficiency within 50 min (η50min), half-life (t1/2) and the observed degradation rate (kobs) as a function of cycles. Experimental condition: C0 of 100 mg L−1, solution volume of 250 mL, ribbon dosage of 10 g L−1, temperature of 25°C, pH value of 6.

  • Figure 9

    Available cycling data of different reported ZVIs compared with the Fe-MGI prepared in this work.

  • Figure 10

    (a) The optical photographs of Fe-MGI before and after cycle experiment, (b) optical microscope image, (c) and (d) SEM images of Fe-MGI after cycle experiment, (e) and (f) further enlarged SEM images of the main reacted region. Inset of (f) is pore size distribution of the nanoporous structures. (g) Corresponding EDS images of (e).

  • Figure 11

    (a) SEM images of the cross-section of Fe-MGI after the fifteenth cycle experiment, the cracks are highlighted by yellow arrows, (b) SEM images of the cross-section of Fe-MGI before and after different cycles, (c) SEM images of the surfaces of Fe-MGI before and after different cycles.


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