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Zhu J, Ma J, Liu L, Zhang S, Zhao L, Jin H, Zhang K. Carbon supported "core-shell structure" of Fe nanoparticles for enhanced Fenton reaction activity and magnetic separation. Environ Sci Pollut Res Int 2023; 30:7207-7217. [PMID: 36031677 DOI: 10.1007/s11356-022-22754-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Accepted: 08/23/2022] [Indexed: 06/15/2023]
Abstract
Effectively facilitating Fe3+/Fe2+ cycles and expanding its operating pH range are keys to optimizing the traditional Fenton reaction. In this exploration, we used chitosan and ferrous sulfate as precursors to prepare a multicomponent magnetic Fe/C Fenton-like catalyst, which exhibited extraordinary catalytic properties and excellent stability performance in a pH range of 4~8. Besides, it could be easily separated from the solution by a magnet. The characterization showed that the supported Fe species include troilite-2H (FeS), lepidocrocite (FeOOH), and pyrrhotite-6T (Fe1 - xS) with a unique "core-shell structure." The presence of reductive iron sulfide core in the system can accelerate the reduction of Fe(III). Meanwhile, the graphite-like structure formed after calcination can adsorb and enrich priority pollutants near the active site through π-π coupling and strengthen electron transfer, which endows its high catalytic performance and enables it invulnerable to dissolved organic compounds.
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Affiliation(s)
- Jiahao Zhu
- College of Civil Engineering and Architecture, Zhejiang University, Hangzhou, 310058, China
- School of Civil Engineering and Architecture, NingboTech University, Ningbo, 315100, China
| | - Jianqing Ma
- School of Civil Engineering and Architecture, NingboTech University, Ningbo, 315100, China.
- Ningbo Research Institute, Zhejiang University, Ningbo, 315100, China.
| | - Liang Liu
- Blue City Ecological Co., Ltd., Ningbo, 315100, China
| | - Shali Zhang
- School of Civil Engineering and Architecture, NingboTech University, Ningbo, 315100, China
| | - Liaoyuan Zhao
- Blue City Ecological Co., Ltd., Ningbo, 315100, China
| | - Huixia Jin
- School of Civil Engineering and Architecture, NingboTech University, Ningbo, 315100, China
- Ningbo Research Institute, Zhejiang University, Ningbo, 315100, China
| | - Kefeng Zhang
- School of Civil Engineering and Architecture, NingboTech University, Ningbo, 315100, China
- Ningbo Research Institute, Zhejiang University, Ningbo, 315100, China
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