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One-step electrodeposition preparation of boron nitride and samarium co-modified Ti/PbO2 anode with ultra-long lifetime: highly efficient degradation of lincomycin wastewater

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Abstract

Lincomycin (LC) is an extensively applied broad-spectrum antibiotic, and its considerable residues in wastewater have caused a series of environmental problems, which makes degradation of LC wastewater extremely urgent. In this work, we have constructed a novel boron nitride (BN) and samarium (Sm) co-modified Ti/PbO2 as anode for high-performance degradation of LC wastewater. Compared with Ti/PbO2, Ti/PbO2-Sm, and Ti/PbO2-BN electrodes, Ti/PbO2-BN-Sm electrode with smaller pyramidal particles possesses higher oxygen evolution potential (2.32 V), excellent accelerated service life (103 h), and outstanding electrocatalytic activity. The single-factor experiments demonstrate that under optimized conditions (current density of 20 mA.cm-2, 6.0 g L-1 Na2SO4, pH 9, and temperature of 30°C), removal rate and COD degradation rate of LC at 3 h have reached 92.85% and 89.11%, respectively. At the same time, degradation of LC is in accordance with the primary kinetic model. Based on the analysis of high-performance liquid chromatography-mass spectrometry (HPLC-MS), four possible degradation pathways are hypothesized. Therefore, efficient electrochemical degradation of LC by using an extremely long-life Ti/PbO2 electrode with high catalytic activity may be a promising method.

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The datasets used and/or analyzed during the current study are available from the corresponding author on reasonable request.

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Funding

This work was supported by the Longshan Academic Talent Research Supporting Program of Southwest University of Science and Technology (Grant No. 18LZX322) and the International Science and Technology Cooperation Laboratory of Micro-nanoparticle Application Research of Southwest University of Science and Technology (Grant No. 19MNA001).

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Maojie Zhao: Investigation, Writing - original draft, Writing - review & editing. Mengqi Yang: Investigation, Writing - review & editing. Peilin Yang: Investigation, Writing - review & editing. Rong Su: Investigation, Writing - review & editing. Feng Xiao: Investigation, Writing - review & editing. Ping He: Project administration. Writing - review & editing. Hongquan Deng: Project administration. Writing - review & editing. Tinghong Zhang: Project administration. Writing - review & editing. Bin Jia: Project administration.

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Correspondence to Ping He or Hongquan Deng.

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Responsible Editor: Weiming Zhang

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Zhao, M., Yang, M., Yang, P. et al. One-step electrodeposition preparation of boron nitride and samarium co-modified Ti/PbO2 anode with ultra-long lifetime: highly efficient degradation of lincomycin wastewater. Environ Sci Pollut Res 30, 97195–97208 (2023). https://doi.org/10.1007/s11356-023-28819-9

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  • DOI: https://doi.org/10.1007/s11356-023-28819-9

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