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Xiao F, Wang Z, Fan J, Majima T, Zhao H, Zhao G. Selective Electrocatalytic Reduction of Oxygen to Hydroxyl Radicals via 3‐Electron Pathway with FeCo Alloy Encapsulated Carbon Aerogel for Fast and Complete Removing Pollutants. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202101804] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Fan Xiao
- Shanghai Key Lab of Chemical Assessment and Sustainability School of Chemical Science and Engineering Tongji University 1239 Siping Road Shanghai 200092 China
| | - Zining Wang
- Shanghai Key Lab of Chemical Assessment and Sustainability School of Chemical Science and Engineering Tongji University 1239 Siping Road Shanghai 200092 China
| | - Jiaqi Fan
- Shanghai Key Lab of Chemical Assessment and Sustainability School of Chemical Science and Engineering Tongji University 1239 Siping Road Shanghai 200092 China
| | - Tetsuro Majima
- The institute of Scientific and Industrial Research Osaka University Mihogaoka 8-1 Ibaraki, Osaka 567-0047 Japan
| | - Hongying Zhao
- Shanghai Key Lab of Chemical Assessment and Sustainability School of Chemical Science and Engineering Tongji University 1239 Siping Road Shanghai 200092 China
| | - Guohua Zhao
- Shanghai Key Lab of Chemical Assessment and Sustainability School of Chemical Science and Engineering Tongji University 1239 Siping Road Shanghai 200092 China
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Xiao F, Wang Z, Fan J, Majima T, Zhao H, Zhao G. Selective Electrocatalytic Reduction of Oxygen to Hydroxyl Radicals via 3-Electron Pathway with FeCo Alloy Encapsulated Carbon Aerogel for Fast and Complete Removing Pollutants. Angew Chem Int Ed Engl 2021; 60:10375-10383. [PMID: 33606335 DOI: 10.1002/anie.202101804] [Citation(s) in RCA: 55] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Indexed: 12/22/2022]
Abstract
We reported the selective electrochemical reduction of oxygen (O2 ) to hydroxyl radicals (. OH) via 3-electron pathway with FeCo alloy encapsulated by carbon aerogel (FeCoC). The graphite shell with exposed -COOH is conducive to the 2-electron reduction pathway for H2 O2 generation stepped by 1-electron reduction towards to . OH. The electrocatalytic activity can be regulated by tuning the local electronic environment of carbon shell with the electrons coming from the inner FeCo alloy. The new strategy of . OH generation from electrocatalytic reduction O2 overcomes the rate-limiting step over electron transfer initiated by reduction-/oxidation-state cycle in Fenton process. Fast and complete removal of ciprofloxacin was achieved within 5 min in this proposed system, the apparent rate constant (kobs ) was up to 1.44±0.04 min-1 , which is comparable with the state-of-the-art advanced oxidation processes. The degradation rate almost remains the same after 50 successive runs, suggesting the satisfactory stability for practical applications.
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Affiliation(s)
- Fan Xiao
- Shanghai Key Lab of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, 1239 Siping Road, Shanghai, 200092, China
| | - Zining Wang
- Shanghai Key Lab of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, 1239 Siping Road, Shanghai, 200092, China
| | - Jiaqi Fan
- Shanghai Key Lab of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, 1239 Siping Road, Shanghai, 200092, China
| | - Tetsuro Majima
- The institute of Scientific and Industrial Research, Osaka University, Mihogaoka 8-1, Ibaraki, Osaka, 567-0047, Japan
| | - Hongying Zhao
- Shanghai Key Lab of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, 1239 Siping Road, Shanghai, 200092, China
| | - Guohua Zhao
- Shanghai Key Lab of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, 1239 Siping Road, Shanghai, 200092, China
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