Fe-Mn/ZrO2 catalysts: Sulfate-based-advanced oxidation process for the degradation of olive oil industry model pollutants
Fe, Mn and a bimetallic FeMn catalysts supported on ZrO2 were synthesized and tested for the activation of persulfate (PS) and peroxymonosulfate (PMS) in the degradation reaction of three different organic compounds: cinnamic acid (CA), benzoic acid (BA), and catechol (C). The catalysts were prepare...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-01-01
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| Series: | Catalysis Communications |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1566736722001832 |
| _version_ | 1797956276325449728 |
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| author | Camila M. Loffredo Mariana Dennehy Mariana Alvarez |
| author_facet | Camila M. Loffredo Mariana Dennehy Mariana Alvarez |
| author_sort | Camila M. Loffredo |
| collection | DOAJ |
| description | Fe, Mn and a bimetallic FeMn catalysts supported on ZrO2 were synthesized and tested for the activation of persulfate (PS) and peroxymonosulfate (PMS) in the degradation reaction of three different organic compounds: cinnamic acid (CA), benzoic acid (BA), and catechol (C). The catalysts were prepared and tested in order to evaluate the effect of the metal and the metal combination on the generation of reactive oxygen species (ROS). The characterization of the catalysts was carried out by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and atomic absorption spectroscopy (AAS).The best degradation results were obtained when PMS was activated with the bimetallic Fe-Mn/ZrO2 catalyst in the CA degradation. Moreover, the Fe-Mn/ZrO2 catalyst reusability was tested for up to three consecutive cycles of reaction, with mineralization levels >90%.A synergistic effect between the Fe and Mn metal species, which increases the catalyst activity if compared to the monometallic catalysts, is postulated. Both sulfate and hydroxyl radicals were generated in the PMS activation process. The activation mechanisms of the oxidants were proposed. |
| first_indexed | 2024-04-10T23:47:31Z |
| format | Article |
| id | doaj.art-f49cda17e4244b9991d25f3061c69477 |
| institution | Directory Open Access Journal |
| issn | 1873-3905 |
| language | English |
| last_indexed | 2024-04-10T23:47:31Z |
| publishDate | 2023-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Catalysis Communications |
| spelling | doaj.art-f49cda17e4244b9991d25f3061c694772023-01-11T04:28:05ZengElsevierCatalysis Communications1873-39052023-01-01174106578Fe-Mn/ZrO2 catalysts: Sulfate-based-advanced oxidation process for the degradation of olive oil industry model pollutantsCamila M. Loffredo0Mariana Dennehy1Mariana Alvarez2INQUISUR/ Departamento de Química, Universidad Nacional del Sur, Av. Alem 1253, 8000 Bahía Blanca, ArgentinaINQUISUR/ Departamento de Química, Universidad Nacional del Sur, Av. Alem 1253, 8000 Bahía Blanca, ArgentinaCorresponding author.; INQUISUR/ Departamento de Química, Universidad Nacional del Sur, Av. Alem 1253, 8000 Bahía Blanca, ArgentinaFe, Mn and a bimetallic FeMn catalysts supported on ZrO2 were synthesized and tested for the activation of persulfate (PS) and peroxymonosulfate (PMS) in the degradation reaction of three different organic compounds: cinnamic acid (CA), benzoic acid (BA), and catechol (C). The catalysts were prepared and tested in order to evaluate the effect of the metal and the metal combination on the generation of reactive oxygen species (ROS). The characterization of the catalysts was carried out by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and atomic absorption spectroscopy (AAS).The best degradation results were obtained when PMS was activated with the bimetallic Fe-Mn/ZrO2 catalyst in the CA degradation. Moreover, the Fe-Mn/ZrO2 catalyst reusability was tested for up to three consecutive cycles of reaction, with mineralization levels >90%.A synergistic effect between the Fe and Mn metal species, which increases the catalyst activity if compared to the monometallic catalysts, is postulated. Both sulfate and hydroxyl radicals were generated in the PMS activation process. The activation mechanisms of the oxidants were proposed.http://www.sciencedirect.com/science/article/pii/S1566736722001832ZrO2Organic pollutantsAdvanced oxidation processesSulfate radicalsiron and manganese catalysts |
| spellingShingle | Camila M. Loffredo Mariana Dennehy Mariana Alvarez Fe-Mn/ZrO2 catalysts: Sulfate-based-advanced oxidation process for the degradation of olive oil industry model pollutants Catalysis Communications ZrO2 Organic pollutants Advanced oxidation processes Sulfate radicals iron and manganese catalysts |
| title | Fe-Mn/ZrO2 catalysts: Sulfate-based-advanced oxidation process for the degradation of olive oil industry model pollutants |
| title_full | Fe-Mn/ZrO2 catalysts: Sulfate-based-advanced oxidation process for the degradation of olive oil industry model pollutants |
| title_fullStr | Fe-Mn/ZrO2 catalysts: Sulfate-based-advanced oxidation process for the degradation of olive oil industry model pollutants |
| title_full_unstemmed | Fe-Mn/ZrO2 catalysts: Sulfate-based-advanced oxidation process for the degradation of olive oil industry model pollutants |
| title_short | Fe-Mn/ZrO2 catalysts: Sulfate-based-advanced oxidation process for the degradation of olive oil industry model pollutants |
| title_sort | fe mn zro2 catalysts sulfate based advanced oxidation process for the degradation of olive oil industry model pollutants |
| topic | ZrO2 Organic pollutants Advanced oxidation processes Sulfate radicals iron and manganese catalysts |
| url | http://www.sciencedirect.com/science/article/pii/S1566736722001832 |
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