Highly selective generation of singlet oxygen via peroxymonosulfate activation by Mn–N supported biochar
In this study, manganese–nitrogen sites were incorporated into biochar (BC) to activate peroxymonosulfate (PMS) for the degradation of sulfamethoxazole (SMX). Characterization techniques, including scanning electron microscopy and others, confirmed the successful doping of Manganese–Nitrogen (Mn–N)...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
AIP Publishing LLC
2025-01-01
|
| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/5.0250244 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832542786604236800 |
|---|---|
| author | Huan Wu Fangfang Ji Bin Zhou Shikun Gao Zhe Zhang |
| author_facet | Huan Wu Fangfang Ji Bin Zhou Shikun Gao Zhe Zhang |
| author_sort | Huan Wu |
| collection | DOAJ |
| description | In this study, manganese–nitrogen sites were incorporated into biochar (BC) to activate peroxymonosulfate (PMS) for the degradation of sulfamethoxazole (SMX). Characterization techniques, including scanning electron microscopy and others, confirmed the successful doping of Manganese–Nitrogen (Mn–N) sites into the BC (referred to as MnN@BC). The study revealed that the integration of Mn–N active sites in BC modified the electronic polarization and facilitated electron transfer. It is worth noting that a remarkable synergistic effect (SI = 6.92) was witnessed in the MnN@BC/PMS system. Under optimal conditions, SMX was nearly completely eliminated within 40 minutes. Radical scavenging experiments indicated that Hydroxyl Radical (•OH), Sulfate Radicals (SO4•−), superoxide radicals (O2•−), and singlet oxygen (1O2) all played significant roles in the degradation of SMX. Density functional theory calculations were employed to further investigate the mechanism of enhanced electron transfer of PMS facilitated by the loading of BC on the Mn–N site. Cyclic experiments and characterizations conducted before and after recycling demonstrated that MnN@BC exhibited remarkable stability and reusability. This study probed into the mechanism of PMS activation by transition metal and non-metal dual active sites and offered strategies for more effective and sustainable degradation of pollutants. |
| format | Article |
| id | doaj-art-752e8516b27649c998bcef7a2a16f897 |
| institution | Kabale University |
| issn | 2158-3226 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | AIP Advances |
| spelling | doaj-art-752e8516b27649c998bcef7a2a16f8972025-02-03T16:40:41ZengAIP Publishing LLCAIP Advances2158-32262025-01-01151015014015014-1110.1063/5.0250244Highly selective generation of singlet oxygen via peroxymonosulfate activation by Mn–N supported biocharHuan Wu0Fangfang Ji1Bin Zhou2Shikun Gao3Zhe Zhang4Intelligent Construction Technology Application Service Center, School of Architecture and Engineering, Chongqing City Vocational College, Chongqing 402160, ChinaT. Y. Lin International, Chongqing 400074, ChinaIntelligent Construction Technology Application Service Center, School of Architecture and Engineering, Chongqing City Vocational College, Chongqing 402160, ChinaSchool of River and Ocean Engineering, Chongqing Jiaotong University, Chongqing 400074, ChinaEnvironmental Engineering and Science Program, Department of Chemical and Environmental Engineering (ChEE), University of Cincinnati, Cincinnati, Ohio 45221-0071, USAIn this study, manganese–nitrogen sites were incorporated into biochar (BC) to activate peroxymonosulfate (PMS) for the degradation of sulfamethoxazole (SMX). Characterization techniques, including scanning electron microscopy and others, confirmed the successful doping of Manganese–Nitrogen (Mn–N) sites into the BC (referred to as MnN@BC). The study revealed that the integration of Mn–N active sites in BC modified the electronic polarization and facilitated electron transfer. It is worth noting that a remarkable synergistic effect (SI = 6.92) was witnessed in the MnN@BC/PMS system. Under optimal conditions, SMX was nearly completely eliminated within 40 minutes. Radical scavenging experiments indicated that Hydroxyl Radical (•OH), Sulfate Radicals (SO4•−), superoxide radicals (O2•−), and singlet oxygen (1O2) all played significant roles in the degradation of SMX. Density functional theory calculations were employed to further investigate the mechanism of enhanced electron transfer of PMS facilitated by the loading of BC on the Mn–N site. Cyclic experiments and characterizations conducted before and after recycling demonstrated that MnN@BC exhibited remarkable stability and reusability. This study probed into the mechanism of PMS activation by transition metal and non-metal dual active sites and offered strategies for more effective and sustainable degradation of pollutants.http://dx.doi.org/10.1063/5.0250244 |
| spellingShingle | Huan Wu Fangfang Ji Bin Zhou Shikun Gao Zhe Zhang Highly selective generation of singlet oxygen via peroxymonosulfate activation by Mn–N supported biochar AIP Advances |
| title | Highly selective generation of singlet oxygen via peroxymonosulfate activation by Mn–N supported biochar |
| title_full | Highly selective generation of singlet oxygen via peroxymonosulfate activation by Mn–N supported biochar |
| title_fullStr | Highly selective generation of singlet oxygen via peroxymonosulfate activation by Mn–N supported biochar |
| title_full_unstemmed | Highly selective generation of singlet oxygen via peroxymonosulfate activation by Mn–N supported biochar |
| title_short | Highly selective generation of singlet oxygen via peroxymonosulfate activation by Mn–N supported biochar |
| title_sort | highly selective generation of singlet oxygen via peroxymonosulfate activation by mn n supported biochar |
| url | http://dx.doi.org/10.1063/5.0250244 |
| work_keys_str_mv | AT huanwu highlyselectivegenerationofsingletoxygenviaperoxymonosulfateactivationbymnnsupportedbiochar AT fangfangji highlyselectivegenerationofsingletoxygenviaperoxymonosulfateactivationbymnnsupportedbiochar AT binzhou highlyselectivegenerationofsingletoxygenviaperoxymonosulfateactivationbymnnsupportedbiochar AT shikungao highlyselectivegenerationofsingletoxygenviaperoxymonosulfateactivationbymnnsupportedbiochar AT zhezhang highlyselectivegenerationofsingletoxygenviaperoxymonosulfateactivationbymnnsupportedbiochar |