Accelerated Fenton reaction for antibiotic ofloxacin degradation in discharge plasma system based on graphene-Fe3O4 nanocomposites

Guo, He; Li, Zhen; Xie, Zhehao; Song, Jia-Xi; Xiang, Liangrui; Zhou, Luoyan; Li, Caixia; Liao, liuni; Li, Jie; Wang, Huijuan

doi:10.1016/j.vacuum.2020.110022

Cited by 28 publications

(4 citation statements)

References 43 publications

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Section: From Fundamentals To Practical Improvements In Catalytic Pro...mentioning

confidence: 99%

“…Meanwhile, the magnetism endowed by catalyst allows an easy separation from the aqueous solution and avoids secondary pollution caused by the catalyst. Figure shows the concentration of reactive HO • in three different configurations: plasma, plasma and Fe 3 O 4 , and plasma reduced graphene-Fe 3 O 4 . In accordance to this behavior, the degradation efficiency of ofloxacin, an antibiotic whose presence in aquatic environment causes renal dysfunction, allergic reaction, and central symptoms, is increased from 65 to 99.9%.…”

Section: From Fundamentals To Practical Improvements In Catalytic Pro...mentioning

confidence: 99%

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Recent Progress and Prospects in Catalytic Water Treatment

et al. 2021

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HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.

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Section: From Fundamentals To Practical Improvements In Catalytic Pro...mentioning

confidence: 99%

Section: From Fundamentals To Practical Improvements In Catalytic Pro...mentioning

confidence: 99%

Recent Progress and Prospects in Catalytic Water Treatment

et al. 2021

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“…In this way, several researchers have studied the degradation of different pollutants such as amoxicillin, sulfadiazine, tetracycline, sulfadiazine, and rifampicin metronidazole, among others, working at pHs of 6 to 7.5, and obtaining degradation higher that 90% using goethite, Fe 2 (SO 4 ) 3 •H 2 O, single-atom iron fixed in porous carbon, copper-modified MgFe-CO 3 double-layered hydroxide, rGO@nFe/Pd, magnetic biocarbon, CoFe 2 O 4 -S, and LaCu 0.8 Mn 0.2 O 3 [68][69][70][71][72][73][74][75] as Fenton catalysts. Guo et al [76] also achieved the total degradation of ofloxacin at the widest pH using GO-Fe 3 O 4 in a discharge plasma system. Wang et al [77] also obtained the total degradation of ofloxacin using Fe 3 O 4 @S-doped ZnO at a pH of 5.2 to 9.0.…”

Section: Fenton Reactionmentioning

confidence: 99%

From Fenton and ORR 2e−-Type Catalysts to Bifunctional Electrodes for Environmental Remediation Using the Electro-Fenton Process

et al. 2023

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Currently, the presence of emerging contaminants in water sources has raised concerns worldwide due to low rates of mineralization, and in some cases, zero levels of degradation through conventional treatment methods. For these reasons, researchers in the field are focused on the use of advanced oxidation processes (AOPs) as a powerful tool for the degradation of persistent pollutants. These AOPs are based mainly on the in-situ production of hydroxyl radicals (OH•) generated from an oxidizing agent (H2O2 or O2) in the presence of a catalyst. Among the most studied AOPs, the Fenton reaction stands out due to its operational simplicity and good levels of degradation for a wide range of emerging contaminants. However, it has some limitations such as the storage and handling of H2O2. Therefore, the use of the electro-Fenton (EF) process has been proposed in which H2O2 is generated in situ by the action of the oxygen reduction reaction (ORR). However, it is important to mention that the ORR is given by two routes, by two or four electrons, which results in the products of H2O2 and H2O, respectively. For this reason, current efforts seek to increase the selectivity of ORR catalysts toward the 2e− route and thus improve the performance of the EF process. This work reviews catalysts for the Fenton reaction, ORR 2e− catalysts, and presents a short review of some proposed catalysts with bifunctional activity for ORR 2e− and Fenton processes. Finally, the most important factors for electro-Fenton dual catalysts to obtain high catalytic activity in both Fenton and ORR 2e− processes are summarized.

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“…Other studies have also confirmed that the traditional DBD has a lower treatment capacity to the laboratory level. None of the reaction systems can be used on a large scale [20][21][22][23]. Moreover, high power demand and mass transfer of low-reactive substances from plasma to the aqueous medium are also disadvantages of the traditional DBD systems [18,22,23].…”

Section: Introductionmentioning

confidence: 99%

Research on quinoline degradation in drinking water by a large volume strong ionization dielectric barrier discharge reaction system

et al. 2021

Plasma Sci. Technol.

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Quinoline is widely used in the production of drugs as a highly effective insecticide, and its derivatives can also be used to produce dyes. It has a teratogenic carcinogen to wildlife and humans once entering into the aquatic environment. In this study, the degradation mechanism of quinoline in drinking water by a strong ionization dielectric barrier discharge (DBD) low-temperature plasma with large volume was explored. High concentration of hydroxyl radical (·OH) (0.74 mmol l−1) and ozone (O3) (58.2 mg l−1) produced by strongly ionized discharge DBD system were quantitatively analyzed based on the results of electron spin resonance and O3 measurements. The influencing reaction conditions of input voltages, initial pH value, ·OH inhibitors, initial concentration and inorganic ions on the removal efficiency of quinoline were systematically studied. The obtained results showed that the removal efficiency and TOC removal of quinoline achieved 94.8% and 32.2%, degradation kinetic constant was 0.050 min−1 at 3.8 kV and in a neutral pH (7.2). The proposed pathways of quinoline were suggested based on identified intermediates as hydroxy pyridine, fumaric acid, oxalic acid, and other small molecular acids by high-performance liquid chromatography/tandem mass spectrometry analysis. Moreover, the toxicity analysis on the intermediates demonstrated that its acute toxicity, bioaccumulation factor and mutagenicity were reduced. The overall findings provided theoretical and experimental basis for the application of a high capacity strong ionization DBD water treatment system in the removal of quinoline from drinking water.

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Accelerated Fenton reaction for antibiotic ofloxacin degradation in discharge plasma system based on graphene-Fe3O4 nanocomposites

Cited by 28 publications

References 43 publications

Recent Progress and Prospects in Catalytic Water Treatment

Recent Progress and Prospects in Catalytic Water Treatment

From Fenton and ORR 2e−-Type Catalysts to Bifunctional Electrodes for Environmental Remediation Using the Electro-Fenton Process

Research on quinoline degradation in drinking water by a large volume strong ionization dielectric barrier discharge reaction system

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