Heterogeneous photo-electro-Fenton degradation of tetracycline through nitrogen/oxygen self-doped porous biochar supported CuFeO2 multifunctional cathode catalyst under visible light

Huo, Siyue ¹Xin, Yanjun ²Xin, Shuaishuai ¹Gao, Mengchun ¹Wang, Yanhao ¹Liu, Wenjie ¹Zhang, Chunlei ¹Ma, Xiaoming¹

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作者信息

1. Ocean Univ China
2. Qingdao Agr Univ
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Abstract

The nitrogen/oxygen self-doped porous biochar (NO/PBC) and NO/PBC supported CuFeO2 (CuFeO2-NO/PBC) were prepared and mixed as cathode catalysts for gas diffusion electrode (GDE) fabrication. The fabricated GDE could realize H2O2 electrogeneration and activate H2O2 to produce active radicals through NO/PBC and CuFeO2, respectively. The GDE with the NO/PBC to CuFeO2-NO/PBC ratio of 1:1 (CuFeO2-NO/PBC-GDE-1.0) possessed more superior catalytic performance for tetracycline degradation in heterogeneous photo-electro-Fenton (heteroPEF) system under visible light than other as-fabricated GDEs. The center dot & nbsp;OH was primary species, and center dot O-2(-) was auxiliary species for hetero-PEF degradation of tetracycline through CuFeO2-NO/PBC-GDE-1.0. The electron on the cathode surface and photoinduced electron could accelerate & nbsp; =Fe3+/=Fe2+ and =Cu2+/=Cu+ redox cycle, promoting center dot OH/center dot O-2(-)& nbsp;production and tetracycline degradation. The toxicity estimation of tetracycline and intermediates, TOC removal and Escherichia coli growth inhibition confirmed that the remission of overall toxicity, the inhibition of antibacterial property and the mineralization of tetracycline were achieved in hetero-PEF system.

Key words

Heterogeneous photo-electro-Fenton/Nitrogen/oxygen self-doped porous biochar/CuFeO 2/Tetracycline/Toxicity estimation/RECYCLABLE MICROSCALED CUFEO2/OXYGEN REDUCTION/ACTIVATED CARBON/H2O2/ELECTROGENERATION/CARBAMAZEPINE/PERFORMANCE/POLLUTANTS/MECHANISM/OXIDATION

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出版年

2022

Applied Catalysis

ISSN：0926-3373

被引量32

参考文献量51

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