FeIII-driven self-cycled Fenton via contact-electro-catalysis for water purification
Abstract While self-cycled Fenton (SC-Fenton) systems represent an innovative advancement in water purification technologies, their practical implementation remains constrained by inefficient in situ H2O2 generation. To address this limitation, we developed a mechano-driven contact-electro-catalysis...
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| Format: | Article |
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Nature Portfolio
2025-05-01
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| Series: | npj Clean Water |
| Online Access: | https://doi.org/10.1038/s41545-025-00476-0 |
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| author | Dongmei Ma Jin Zhang Wei Li Jinxing Ma Kuanchang He Kui Yang Jianghu Cui Qian Liu Sihao Lv Min Zhang Faliang Cheng Defeng Xing |
| author_facet | Dongmei Ma Jin Zhang Wei Li Jinxing Ma Kuanchang He Kui Yang Jianghu Cui Qian Liu Sihao Lv Min Zhang Faliang Cheng Defeng Xing |
| author_sort | Dongmei Ma |
| collection | DOAJ |
| description | Abstract While self-cycled Fenton (SC-Fenton) systems represent an innovative advancement in water purification technologies, their practical implementation remains constrained by inefficient in situ H2O2 generation. To address this limitation, we developed a mechano-driven contact-electro-catalysis (CEC) platform employing fluorinated ethylene propylene (FEP) as a triboelectric catalyst. Under ultrasound irradiation, this system achieves an exceptional H2O2 generation rate of 7.67 mmol·gcat –1·h–1, outperforming conventional piezo-catalysis systems. Mechanistic studies reveal that a built interfacial electric field generated on the FEP surface effectively reduces the free energy for the indirect 2e– water oxidation pathway. This unique characteristic promotes the generation of interfacial hydroxyl radical (*OH) and enhances its subsequent recombination into H2O2. The strategic integration of FeIII as a catalytic initiator with the CEC system enables the establishment of SC-Fenton reaction (FeIII/FEP/CEC). Notably, the contact-electrification electrons accumulated on the FEP interface drive efficient FeIII/FeII redox cycling, achieving a remarkable degradation rate for sulfadiazine at 0.125 min–1. This enhanced catalytic performance stems from FeIII-mediated amplification of dissociative hydroxyl radical (•OH) generation. This study provides fundamental insights into the underlying mechanisms of CEC-mediated FeIII-initiated SC-Fenton reaction, offering new possibilities for sustainable water purification processes. |
| format | Article |
| id | doaj-art-26b60baaecdf444b926eb3fb48143178 |
| institution | Kabale University |
| issn | 2059-7037 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | npj Clean Water |
| spelling | doaj-art-26b60baaecdf444b926eb3fb481431782025-08-20T03:48:15ZengNature Portfolionpj Clean Water2059-70372025-05-01811910.1038/s41545-025-00476-0FeIII-driven self-cycled Fenton via contact-electro-catalysis for water purificationDongmei Ma0Jin Zhang1Wei Li2Jinxing Ma3Kuanchang He4Kui Yang5Jianghu Cui6Qian Liu7Sihao Lv8Min Zhang9Faliang Cheng10Defeng Xing11Research Center for Eco-environmental Engineering, School of Environment and Civil Engineering, Dongguan University of TechnologyResearch Center for Eco-environmental Engineering, School of Environment and Civil Engineering, Dongguan University of TechnologyResearch Center for Eco-environmental Engineering, School of Environment and Civil Engineering, Dongguan University of TechnologySchool of Ecology, Environment and Resources, Guangdong University of TechnologySchool of Ecology, Environment and Resources, Guangdong University of TechnologySchool of Ecology, Environment and Resources, Guangdong University of TechnologyResearch Center for Eco-environmental Engineering, School of Environment and Civil Engineering, Dongguan University of TechnologyResearch Center for Eco-environmental Engineering, School of Environment and Civil Engineering, Dongguan University of TechnologyResearch Center for Eco-environmental Engineering, School of Environment and Civil Engineering, Dongguan University of TechnologyGuangdong Engineering and Technology Research Center for Advanced Nanomaterials, School of Environment and Civil Engineering, Dongguan University of TechnologyGuangdong Engineering and Technology Research Center for Advanced Nanomaterials, School of Environment and Civil Engineering, Dongguan University of TechnologyState Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of TechnologyAbstract While self-cycled Fenton (SC-Fenton) systems represent an innovative advancement in water purification technologies, their practical implementation remains constrained by inefficient in situ H2O2 generation. To address this limitation, we developed a mechano-driven contact-electro-catalysis (CEC) platform employing fluorinated ethylene propylene (FEP) as a triboelectric catalyst. Under ultrasound irradiation, this system achieves an exceptional H2O2 generation rate of 7.67 mmol·gcat –1·h–1, outperforming conventional piezo-catalysis systems. Mechanistic studies reveal that a built interfacial electric field generated on the FEP surface effectively reduces the free energy for the indirect 2e– water oxidation pathway. This unique characteristic promotes the generation of interfacial hydroxyl radical (*OH) and enhances its subsequent recombination into H2O2. The strategic integration of FeIII as a catalytic initiator with the CEC system enables the establishment of SC-Fenton reaction (FeIII/FEP/CEC). Notably, the contact-electrification electrons accumulated on the FEP interface drive efficient FeIII/FeII redox cycling, achieving a remarkable degradation rate for sulfadiazine at 0.125 min–1. This enhanced catalytic performance stems from FeIII-mediated amplification of dissociative hydroxyl radical (•OH) generation. This study provides fundamental insights into the underlying mechanisms of CEC-mediated FeIII-initiated SC-Fenton reaction, offering new possibilities for sustainable water purification processes.https://doi.org/10.1038/s41545-025-00476-0 |
| spellingShingle | Dongmei Ma Jin Zhang Wei Li Jinxing Ma Kuanchang He Kui Yang Jianghu Cui Qian Liu Sihao Lv Min Zhang Faliang Cheng Defeng Xing FeIII-driven self-cycled Fenton via contact-electro-catalysis for water purification npj Clean Water |
| title | FeIII-driven self-cycled Fenton via contact-electro-catalysis for water purification |
| title_full | FeIII-driven self-cycled Fenton via contact-electro-catalysis for water purification |
| title_fullStr | FeIII-driven self-cycled Fenton via contact-electro-catalysis for water purification |
| title_full_unstemmed | FeIII-driven self-cycled Fenton via contact-electro-catalysis for water purification |
| title_short | FeIII-driven self-cycled Fenton via contact-electro-catalysis for water purification |
| title_sort | feiii driven self cycled fenton via contact electro catalysis for water purification |
| url | https://doi.org/10.1038/s41545-025-00476-0 |
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