Degradation of polyvinyl chloride microplastics via electrochemical oxidation with a CeO2–PbO2 anode

Ning, Ziqi; Duan, Xiaoyue; Li, Yitong; Zhao, Xuesong; Chang, Limin

doi:10.1016/j.jclepro.2023.139668

Cited by 10 publications

(2 citation statements)

References 65 publications

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“…Based on the intrinsic nature of anodes, both the nonradical and the radical oxidation mechanisms were illustrated in the contributions to the degradation of antibiotics by the synergistic effects of direct electrolysis and indirect oxidations. Notably, the in situ generation of •OH on the non-active anode was regarded as the dominant pathway for organic degradation [26][27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Boosted Electrocatalytic Degradation of Levofloxacin by Chloride Ions: Performances Evaluation and Mechanism Insight with Different Anodes

Yang,

Han,

Liu

et al. 2024

Molecules

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As chloride (Cl−) is a commonly found anion in natural water, it has a significant impact on electrocatalytic oxidation processes; yet, the mechanism of radical transformation on different types of anodes remains unexplored. Therefore, this study aims to investigate the influence of chlorine-containing environments on the electrocatalytic degradation performance of levofloxacin using BDD, Ti4O7, and Ru-Ti electrodes. The comparative analysis of the electrode performance demonstrated that the presence of Cl− improved the removal and mineralization efficiency of levofloxacin on all the electrodes. The enhancement was the most pronounced on the Ti4O7 electrode and the least significant on the Ru-Ti electrode. The evaluation experiments and EPR characterization revealed that the increased generation of hydroxyl radicals and active chlorine played a major role in the degradation process, particularly on the Ti4O7 anode. The electrochemical performance tests indicated that the concentration of Cl− affected the oxygen evolution potentials of the electrode and consequently influenced the formation of hydroxyl radicals. This study elucidates the mechanism of Cl− participation in the electrocatalytic degradation of chlorine-containing organic wastewater. Therefore, the highly chlorine-resistant electrocatalytic anode materials hold great potential for the promotion of the practical application of the electrocatalytic treatment of antibiotic wastewater.

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Section: Introductionmentioning

confidence: 99%

Boosted Electrocatalytic Degradation of Levofloxacin by Chloride Ions: Performances Evaluation and Mechanism Insight with Different Anodes

Yang,

Han,

Liu

et al. 2024

Molecules

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“…These methods comprise coagulation-occulation (XIANGXiao-fang, 2024), biological treatment (Dai et al, 2024), ltration (Talvitie et al, 2017), magnetic separation (Grbic et al, 2019), photocatalysis (Uheida et al, 2021), and electrochemistry (Kiendrebeogo et al, 2021). Of these methods, advanced electrocatalysis oxidation process (AEOP) (Ning et al, 2023) has demonstrated signi cant bene ts in degrading microplastic pollutants due to its high e ciency (Yan et al, 2023), operational simplicity, and environmental friendliness (Ma et al, 2023). Electrode materials' properties directly impact the e ciency of AEOP water treatment (Dolatabadi et al, 2023).…”

Section: Introductionmentioning

confidence: 99%

La-doped Ti/Sb-SnO2 electrode enhanced removal of microplastics by advanced electrocatalysis oxidation process (AEOP) strategy

Zheng,

Wang,

Liu

et al. 2024

Preprint

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Microplastics (MPs) in the aqueous environments has attracted widespread attention because of its potential risk to human health .Its high stability makes it difficult to be degraded and long term presence in the environment. Therefore, it is crucial to find an efficient and clean technology to remove microplastics in water. The advanced electrocatalysis oxidation process (AEOP) shows great potential for application. In this work, We focused on preparing Ti/Sb-SnO2 electrodes doped with different rare earth elements (La, Ce, Sm or Nd) as active layer by sol-gel method. The electrooxidation system has efficiently degraded MPs in aqueous solution. The optimal parameters for the removal of MPs were electrode spacing of 1.5 cm, current density of 46.67 mA cm-2, Na2SO4 electrolyte concentration of 0.22 mol·L-1, and initial solution pH of 7. After 3 h, MPs removal rate by Ti/La-Sb-SnO2 system reached 28.3 %, which was higher than the Ti/Ce-Sb-SnO2, Ti/Sm-Sb-SnO2, Ti/Nd-Sb-SnO2 and Ti/Sb-SnO2 electrode, the removal rates were increased by 8.23 %, 10.13 %, 16.28 % and 77 %, respectively. Electrochemical performance tests and •OH (Hydroxyl radicals) generation results indicated that the surface of Ti/La-Sb-SnO2 electrode had abundant active sites, which promoted the formation of •OH to degrade microplastics effectively. In summary, the rare earth element-doped Ti/Sb-SnO2 electrode provides crucial technological support for the electrooxidative removal of microplastics from water.

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Ti/PANI/PbO2-Ce Anode for 2,3-Dimethylphenol Degradation: Effective Electrocatalytic Performance and Degradation Mechanism

Zhang,

An,

Yuan

et al. 2024

Water Air Soil Pollut

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Degradation of polyvinyl chloride microplastics via electrochemical oxidation with a CeO2–PbO2 anode

Cited by 10 publications

References 65 publications

Boosted Electrocatalytic Degradation of Levofloxacin by Chloride Ions: Performances Evaluation and Mechanism Insight with Different Anodes

Boosted Electrocatalytic Degradation of Levofloxacin by Chloride Ions: Performances Evaluation and Mechanism Insight with Different Anodes

La-doped Ti/Sb-SnO2 electrode enhanced removal of microplastics by advanced electrocatalysis oxidation process (AEOP) strategy

Ti/PANI/PbO2-Ce Anode for 2,3-Dimethylphenol Degradation: Effective Electrocatalytic Performance and Degradation Mechanism

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