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Peroxydisulfate activation by atomically-dispersed Fe-Nx on N-doped carbon: Mechanism of singlet oxygen evolution for nonradical degradation of aqueous contaminants
Abstract
Abstract Single-atom catalysts have drawn increasing attention in advanced oxidation due to their unique structure and significant promise in heterogeneous catalysis. Herein, single-atom iron anchored on nitrogen-doped carbon (SAFe-N-C) was synthesized with iron phthalocyanine (FePc) and metal-organic framework (ZIF-8). With thermal treatment and acid leaching, atomically-dispersed Fe-Nx sites were successfully formed on the surface of N-C support derived from ZIF-8. The prepared catalyst was demonstrated to activate peroxydisulfate (PDS) for chloramphenicol (CAP) degradation. Compared with N-C, the SAFe-N-C shows 6 times enhanced removal efficiency (from 15.3% to 93.1%) for CAP. Moreover, the catalyst shows high catalytic activity in a wide pH range of 5 to 9 and good resistance to inorganic anions, in which a singlet oxygen-dominated process is found. This study reveals the role of single-atom site in singlet oxygen evolution and offers a new catalytic approach for selective removal of organic pollutants in complex water matrix.
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Cites
Metal-Free Carbocatalysis in Advanced Oxidation Reactions
Duan, X., Sun, H., & Wang, S. (2018) · Accounts of Chemical Research · doi:10.1021/acs.accounts.7b00535 · Cited by 1,329
Zhu, S., Huang, X., Ma, F., Wang, L., Duan, X., & Wang, S. (2018) · Environmental Science & Technology · doi:10.1021/acs.est.8b01817 · Cited by 1,179
Yun, E.-T., Lee, J. H., Kim, J., Park, H.-D., & Lee, J. (2018) · Environmental Science & Technology · doi:10.1021/acs.est.8b00959 · Cited by 1,175
Sun, C., Chen, T., Huang, Q., Zhan, M., Li, X., & Yan, J. (2020) · Chemical Engineering Journal · doi:10.1016/j.cej.2019.122519 · Cited by 329
Wan, Z., Sun, Y., Tsang, D. C. W., Yu, I. K. M., Fan, J., Clark, J. H., Zhou, Y., Cao, X., Gao, B., & Ok, Y. S. (2019) · Green Chemistry · doi:10.1039/c9gc01843c · Cited by 260
Cited by
Zhao, Y., Yu, L., Song, C., Chen, Z., Meng, F., & Song, M. (2022) · Environmental Science & Technology · doi:10.1021/acs.est.2c01759 · Cited by 325
Metadata
- Authors
- Du, N., Liu, Y., Li, Q., Miao, W., Wang, D., & Mao, S.
- Venue
- Chemical Engineering Journal
- Publisher
- Elsevier BV
- Published
- 2021-06
- Volume
- 413
- Pages
- 127545
- ISSN
- 1385-8947 (ISSN-L)
- OpenAlex
- W3095827004
- Cited by
- 189
- References
- 5
- FWCI
- 7.54
- Type
- journal article
- Language
- en
- Open access
- closed
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- Du, N., Liu, Y., Li, Q., Miao, W., Wang, D., & Mao, S. (2021). Peroxydisulfate activation by atomically-dispersed Fe-Nx on N-doped carbon: Mechanism of singlet oxygen evolution for nonradical degradation of aqueous contaminants. Chemical Engineering Journal. https://doi.org/10.1016/j.cej.2020.127545
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