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Cited by 215

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The superoxide radicals’ production via persulfate activated with CuFe2O4@Biochar composites to promote the redox pairs cycling for efficient degradation of o-nitrochlorobenzene in soil

Zhao, Yan, Song, Min, Cao, Qi, Sun, Peizhe, Chen, Yonghao, Meng, Fanyue·2020·Journal of Hazardous Materials

Abstract

CuFe2O4 nanoparticles are decorated on biochar (BC) by modified sol-gel method to form the CuFe2O4@BC catalyst for persulfate (PS) activation in a wide pH range. The application of CuFe2O4@BC for o-nitrochlorobenzene degradation in soil was explored in this study. The mechanism of heterogeneous PS activation was comprehensively investigated. The synergistic effects between CuFe2O4 and BC could enhance catalytic activity and stability, including well dispersed CuFe2O4 species, efficient electron transfer and abundant oxygen functional groups. The superoxide radicals (O2-) produced from CuFe2O4 and BC could mediate Cu(I)/Cu(II) and Fe(II)/Fe(III) redox pairs on CuFe2O4@BC surface to activate PS, and then generating •OH and SO4- continuously. Moreover, the reaction intermediates are identified as well to elucidate the possible degradation pathways. These findings help to achieve more comprehensive understanding of the heterogeneous activation process of PS by CuFe2O4@BC catalyst.

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Metadata

Authors
Zhao, Y., Song, M., Cao, Q., Sun, P., Chen, Y., & Meng, F.
Venue
Journal of Hazardous Materials
Publisher
Elsevier BV
Published
2020-12
Volume
400
Pages
122887
ISSN
0304-3894 (ISSN-L)
OpenAlex
W3024398068
Cited by
215
References
5
FWCI
7.40
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: The superoxide radicals’ production via persulfate activated with CuFe2O4@Biochar composites to promote the redox pairs cycling for efficient degradation of o-nitrochlorobenzene in soil. https://app.cochat.ai/papers/10.1016/j.jhazmat.2020.122887
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Zhao, Y., Song, M., Cao, Q., Sun, P., Chen, Y., & Meng, F. (2020). The superoxide radicals’ production via persulfate activated with CuFe2O4@Biochar composites to promote the redox pairs cycling for efficient degradation of o-nitrochlorobenzene in soil. Journal of Hazardous Materials. https://doi.org/10.1016/j.jhazmat.2020.122887

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