Document Type

Journal Article

Publication Title

Catalysts

Publisher

MDPI

School

School of Engineering

RAS ID

30904

Funders

Australian Research Council

National Natural Science Foundation of China (Grant Nos. 61671206, 51771103).

Grant Number

ARC Number : DP130103592

Comments

Wang, X., Zhang, Q., Liang, S. X., Jia, Z., Zhang, W., Wang, W., & Zhang, L. C. (2020). Fe-based metallic glasses and dyes in fenton-like processes: Understanding their intrinsic correlation. Catalysts, 10(1), 48. https://doi.org/10.3390/catal10010048

Abstract

Fe-based metallic glasses have been demonstrated as effective heterogeneous catalysts in Fenton-like processes for dye degradation. Yet, currently corresponding studies have limitations due to the limited study object (dyes) and the correlation between metallic glasses and dye pollutants in Fenton-like processes is still not comprehensively studied. Accordingly, this work intensively investigated the thermal catalytic behavior correlations between two Fe-based metallic glasses (Fe78Si9B13 and Fe73.5Si13.5B9Cu1Nb3) and eight different dyes. Results indicated a lower activation energy in the more active metallic glass and a dependence of the activation energy of Fe-based metallic glasses in dye solutions. In addition, a high H2O2 concentration led to a declined catalytic efficiency but a photo-enhanced Fenton-like process overcame this limitation at high concentration of H2O2 due to the decrease of pH and enhancement of irradiation. Furthermore, the average mineralization rates of Fe78Si9B13 and Fe73.5Si13.5B9Cu1Nb3 have been measured to be 42.7% and 12.6%, respectively, and the correlation between decolorization and mineralization revealed that a faster decolorization in a Fenton-like process contributed to a higher mineralization rate. This work provides an intrinsic viewpoint of the correlation between Fe-based metallic glasses and dyes in Fenton-like processes and holds the promise to further promote the industrial value of metallic glasses.

DOI

10.3390/catal10010048

Creative Commons License

Creative Commons Attribution 4.0 License
This work is licensed under a Creative Commons Attribution 4.0 License.

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