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Preparation of BiFeO3 and photodegradation of tetracycline pollutant in the UV-heterogeneous Fenton-like system

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Abstract

Surplus tetracycline in the water body causes damage to the ecology balance and human health. Therefore, this work established an efficient strategy, namely, the BFO-based UV-heterogeneous Fenton-like system, to eliminate TC pollution. The photocatalytic oxidation system has been integrated with the heterogeneous Fenton-like system, cooperated with the photolysis of H2O2. These synergistic effects could boost the generation of reactive species for the TC degradation and mineralization, due to the reduction of Fe(III) to Fe(II) by photogenerated electrons and the separation of photogenerated electron–hole pairs. The prepared BFO was stable with no secondary pollution, and could be recovered by an extra magnet to reuse. Compared with other single oxidation systems, this coupled system showed an outstanding performance in TC disposal, and TC and TOC removal efficiencies could reach 100% and 74.92%, respectively. Moreover, the mechanisms for TC degradation involved that TC was degraded by oxidation species, such as superoxide radicals, hydroxyl radicals, and positive holes, and intermediate products in the TC degradation process mainly were products at m/z = 459, m/z = 445, and m/z = 134. The promising TC disposal efficiency achieved by the integration between BFO-based photocatalytic and heterogeneous Fenton-like system sheds light on applying BFO to control water pollution.

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All data generated or analyzed during this study are included in this published article and its supplementary information files.

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Funding

The research was supported by the Fundamental Research Funds for the Central Universities (Grant No. 2632019FY02), the National Natural Science Foundation of China (Grant No. 21707166), the National Innovation and Entrepreneurship Training Program for Undergraduate (Grant No. 202010316067S), the Environmental Protection Research Project of Jiangsu Province, Standardized evaluation and Remediation of key Chemical Industrial Parks and Technology Research on Control of Typical Pollutants (2018006), and the Natural Science Foundation of Jiangsu Province (BK20190568).

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Yongwei Jiang: funding acquisition, writing—review and editing. Chao Xing: formal analysis; writing—original draft; writing—review and editing. Yue Chen: investigation, formal analysis, writing—original draft. Jing Shi: conceptualization; resources; writing—review and editing; supervision; funding acquisition. Sheng Wang: investigation, formal analysis.

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Correspondence to Jing Shi.

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Jiang, Y., Xing, C., Chen, Y. et al. Preparation of BiFeO3 and photodegradation of tetracycline pollutant in the UV-heterogeneous Fenton-like system. Environ Sci Pollut Res 29, 57656–57668 (2022). https://doi.org/10.1007/s11356-022-19806-7

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  • DOI: https://doi.org/10.1007/s11356-022-19806-7

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  1. Chao Xing