Enriched Surface Oxygen Vacancies of Fe<sub>2</sub>(MoO<sub>4</sub>)<sub>3</sub> Catalysts for a PDS-Activated photoFenton System
The environmentally benign Fe<sub>2</sub>(MoO<sub>4</sub>)<sub>3</sub> plays a crucial role in the transformation of organic contaminants, either through catalytically decomposing oxidants or through directly oxidizing the target pollutants. Because of their dual...
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MDPI AG
2022-12-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/28/1/333 |
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| author | Yang Qiu Chuanxi Yang Huimin Zhou Jinqiu Zang Yuqi Fan Feng Dang Guanwei Cui Weiliang Wang |
| author_facet | Yang Qiu Chuanxi Yang Huimin Zhou Jinqiu Zang Yuqi Fan Feng Dang Guanwei Cui Weiliang Wang |
| author_sort | Yang Qiu |
| collection | DOAJ |
| description | The environmentally benign Fe<sub>2</sub>(MoO<sub>4</sub>)<sub>3</sub> plays a crucial role in the transformation of organic contaminants, either through catalytically decomposing oxidants or through directly oxidizing the target pollutants. Because of their dual roles and the complex surface chemical reactions, the mechanism involved in Fe<sub>2</sub>(MoO<sub>4</sub>)<sub>3</sub>-catalyzed PDS activation processes remains obscure. In this study, Fe<sub>2</sub>(MoO<sub>4</sub>)<sub>3</sub> was prepared via the hydrothermal and calcine method, and photoFenton degradation of methyl orange (MO) was used to evaluate the catalytic performance of Fe<sub>2</sub>(MoO<sub>4</sub>)<sub>3</sub>. Fe<sub>2</sub>(MoO<sub>4</sub>)<sub>3</sub> catalysts with abundant surface oxygen vacancies were used to construct a synergistic system involving a photocatalyst and PDS activation. The oxygen vacancies and Fe<sup>2+</sup>/Fe<sup>3+</sup> shuttle played key roles in the novel pathways for generation of •O<sub>2</sub><sup>−</sup>, h<sup>+</sup>, and <sup>1</sup>O<sub>2</sub> in the UV–Vis + PDS + FMO-6 photoFenton system. This study advances the fundamental understanding of the underlying mechanism involved in the transition metal oxide-catalyzed PDS activation processes. |
| first_indexed | 2024-03-09T12:06:15Z |
| format | Article |
| id | doaj.art-fff86c07889843c989d67d38b006fc31 |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-09T12:06:15Z |
| publishDate | 2022-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj.art-fff86c07889843c989d67d38b006fc312023-11-30T22:58:01ZengMDPI AGMolecules1420-30492022-12-0128133310.3390/molecules28010333Enriched Surface Oxygen Vacancies of Fe<sub>2</sub>(MoO<sub>4</sub>)<sub>3</sub> Catalysts for a PDS-Activated photoFenton SystemYang Qiu0Chuanxi Yang1Huimin Zhou2Jinqiu Zang3Yuqi Fan4Feng Dang5Guanwei Cui6Weiliang Wang7Institute of Environment and Ecology, Shandong Normal University, Jinan 250358, ChinaSchool of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266520, ChinaInstitute of Environment and Ecology, Shandong Normal University, Jinan 250358, ChinaSchool of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266520, ChinaInstitute of Environment and Ecology, Shandong Normal University, Jinan 250358, ChinaKey Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, Shandong University, Jinan 250061, ChinaKey Laboratory of Molecular and Nano Probes, College of Chemistry, Chemical Engineering and Materials Science, Ministry of Education, Shandong Normal University, Jinan 250014, ChinaSchool of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266520, ChinaThe environmentally benign Fe<sub>2</sub>(MoO<sub>4</sub>)<sub>3</sub> plays a crucial role in the transformation of organic contaminants, either through catalytically decomposing oxidants or through directly oxidizing the target pollutants. Because of their dual roles and the complex surface chemical reactions, the mechanism involved in Fe<sub>2</sub>(MoO<sub>4</sub>)<sub>3</sub>-catalyzed PDS activation processes remains obscure. In this study, Fe<sub>2</sub>(MoO<sub>4</sub>)<sub>3</sub> was prepared via the hydrothermal and calcine method, and photoFenton degradation of methyl orange (MO) was used to evaluate the catalytic performance of Fe<sub>2</sub>(MoO<sub>4</sub>)<sub>3</sub>. Fe<sub>2</sub>(MoO<sub>4</sub>)<sub>3</sub> catalysts with abundant surface oxygen vacancies were used to construct a synergistic system involving a photocatalyst and PDS activation. The oxygen vacancies and Fe<sup>2+</sup>/Fe<sup>3+</sup> shuttle played key roles in the novel pathways for generation of •O<sub>2</sub><sup>−</sup>, h<sup>+</sup>, and <sup>1</sup>O<sub>2</sub> in the UV–Vis + PDS + FMO-6 photoFenton system. This study advances the fundamental understanding of the underlying mechanism involved in the transition metal oxide-catalyzed PDS activation processes.https://www.mdpi.com/1420-3049/28/1/333Fe<sub>2</sub>(MoO<sub>4</sub>)<sub>3</sub>photoFentonshuttlesynergistic effectoxygen vacancies |
| spellingShingle | Yang Qiu Chuanxi Yang Huimin Zhou Jinqiu Zang Yuqi Fan Feng Dang Guanwei Cui Weiliang Wang Enriched Surface Oxygen Vacancies of Fe<sub>2</sub>(MoO<sub>4</sub>)<sub>3</sub> Catalysts for a PDS-Activated photoFenton System Molecules Fe<sub>2</sub>(MoO<sub>4</sub>)<sub>3</sub> photoFenton shuttle synergistic effect oxygen vacancies |
| title | Enriched Surface Oxygen Vacancies of Fe<sub>2</sub>(MoO<sub>4</sub>)<sub>3</sub> Catalysts for a PDS-Activated photoFenton System |
| title_full | Enriched Surface Oxygen Vacancies of Fe<sub>2</sub>(MoO<sub>4</sub>)<sub>3</sub> Catalysts for a PDS-Activated photoFenton System |
| title_fullStr | Enriched Surface Oxygen Vacancies of Fe<sub>2</sub>(MoO<sub>4</sub>)<sub>3</sub> Catalysts for a PDS-Activated photoFenton System |
| title_full_unstemmed | Enriched Surface Oxygen Vacancies of Fe<sub>2</sub>(MoO<sub>4</sub>)<sub>3</sub> Catalysts for a PDS-Activated photoFenton System |
| title_short | Enriched Surface Oxygen Vacancies of Fe<sub>2</sub>(MoO<sub>4</sub>)<sub>3</sub> Catalysts for a PDS-Activated photoFenton System |
| title_sort | enriched surface oxygen vacancies of fe sub 2 sub moo sub 4 sub sub 3 sub catalysts for a pds activated photofenton system |
| topic | Fe<sub>2</sub>(MoO<sub>4</sub>)<sub>3</sub> photoFenton shuttle synergistic effect oxygen vacancies |
| url | https://www.mdpi.com/1420-3049/28/1/333 |
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