Efficient water disinfection against antibiotic-resistant bacteria by visible-light heterogeneous photo-Fenton-like process with atomically dispersed Cu on graphitic carbon nitride as the catalyst
Waterborne microbial contamination poses significant environmental and health risks. Photocatalytic heterogeneous Fenton and Fenton-like processes can offer efficient pathogen removal, with benefits in recycling, solid–liquid separation, and byproduct avoidance. However, their low reaction efficienc...
| Main Authors: | , , , , , , , , , , , , |
|---|---|
| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2024
|
| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/180765 |
| _version_ | 1824453693598072832 |
|---|---|
| author | Liu, Hang Wang, Tianyi Liu, Sixiao Zhou, Xiaoyu Zhang, Lei Sun, Yi Hu, Yongfeng Sharouri, Mohsen Zhang, Yu Teng, Zhenyuan Zhang, Xiuyun Wang, Guoxiu Wang, Chengyin |
| author2 | School of Chemical and Biomedical Engineering |
| author_facet | School of Chemical and Biomedical Engineering Liu, Hang Wang, Tianyi Liu, Sixiao Zhou, Xiaoyu Zhang, Lei Sun, Yi Hu, Yongfeng Sharouri, Mohsen Zhang, Yu Teng, Zhenyuan Zhang, Xiuyun Wang, Guoxiu Wang, Chengyin |
| author_sort | Liu, Hang |
| collection | NTU |
| description | Waterborne microbial contamination poses significant environmental and health risks. Photocatalytic heterogeneous Fenton and Fenton-like processes can offer efficient pathogen removal, with benefits in recycling, solid–liquid separation, and byproduct avoidance. However, their low reaction efficiency and slow kinetics for low-valence metal regeneration are limitations. This study addresses these challenges by incorporating atomically dispersed Cu onto graphitic carbon nitride (g-CN) as a single-atom catalyst (SAC). The Cu atoms are stabilized by pyridinic N atoms through coordination, forming Cu-N4 catalytic sites that enhance photogenerated charge carrier transfer. This leads to a more efficient synergistic photocatalytic-Fenton-like reaction, generating more hydroxyl radicals and achieving effective water disinfection. Results show a 7-log bacterial inactivation of antibiotic-resistant Acinetobacter baumannii within 8 min, surpassing prior photocatalytic-Fenton-like disinfection systems. Density functional theory calculations confirm improved hydrogen peroxide adsorption, electron transport, and electron-hole separation in the Cu-N4 structure. The catalyst's durability and stability were demonstrated through extensive cycling experiments, ion interference tests, and disinfection trials in various water matrices. Additionally, the Cu-SAC@CN catalyst, loaded onto a polytetrafluoroethylene membrane, achieved a 99% bacterial eradication rate within 20 min. This study provides valuable insights into the potential applications of heterogeneous photocatalytic-Fenton-like systems for efficient eradication of waterborne bacteria. |
| first_indexed | 2025-02-19T03:10:29Z |
| format | Journal Article |
| id | ntu-10356/180765 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2025-02-19T03:10:29Z |
| publishDate | 2024 |
| record_format | dspace |
| spelling | ntu-10356/1807652024-10-23T04:24:34Z Efficient water disinfection against antibiotic-resistant bacteria by visible-light heterogeneous photo-Fenton-like process with atomically dispersed Cu on graphitic carbon nitride as the catalyst Liu, Hang Wang, Tianyi Liu, Sixiao Zhou, Xiaoyu Zhang, Lei Sun, Yi Hu, Yongfeng Sharouri, Mohsen Zhang, Yu Teng, Zhenyuan Zhang, Xiuyun Wang, Guoxiu Wang, Chengyin School of Chemical and Biomedical Engineering Engineering Acinetobacter baumannii Single-atom catalysis Waterborne microbial contamination poses significant environmental and health risks. Photocatalytic heterogeneous Fenton and Fenton-like processes can offer efficient pathogen removal, with benefits in recycling, solid–liquid separation, and byproduct avoidance. However, their low reaction efficiency and slow kinetics for low-valence metal regeneration are limitations. This study addresses these challenges by incorporating atomically dispersed Cu onto graphitic carbon nitride (g-CN) as a single-atom catalyst (SAC). The Cu atoms are stabilized by pyridinic N atoms through coordination, forming Cu-N4 catalytic sites that enhance photogenerated charge carrier transfer. This leads to a more efficient synergistic photocatalytic-Fenton-like reaction, generating more hydroxyl radicals and achieving effective water disinfection. Results show a 7-log bacterial inactivation of antibiotic-resistant Acinetobacter baumannii within 8 min, surpassing prior photocatalytic-Fenton-like disinfection systems. Density functional theory calculations confirm improved hydrogen peroxide adsorption, electron transport, and electron-hole separation in the Cu-N4 structure. The catalyst's durability and stability were demonstrated through extensive cycling experiments, ion interference tests, and disinfection trials in various water matrices. Additionally, the Cu-SAC@CN catalyst, loaded onto a polytetrafluoroethylene membrane, achieved a 99% bacterial eradication rate within 20 min. This study provides valuable insights into the potential applications of heterogeneous photocatalytic-Fenton-like systems for efficient eradication of waterborne bacteria. The authors gratefully acknowledge the financially support by the National Natural Science Foundation of China (Grant No. 22102141), the six talent peaks project in Jiangsu Province (XCL-104) and Postgraduate Research & Practice Innovation Program of Jiangsu Province (KYCX22-3461), the Postgraduate Education and Teaching Reform Project of Yangzhou University (No. XJGKT22_010). 2024-10-23T04:24:34Z 2024-10-23T04:24:34Z 2024 Journal Article Liu, H., Wang, T., Liu, S., Zhou, X., Zhang, L., Sun, Y., Hu, Y., Sharouri, M., Zhang, Y., Teng, Z., Zhang, X., Wang, G. & Wang, C. (2024). Efficient water disinfection against antibiotic-resistant bacteria by visible-light heterogeneous photo-Fenton-like process with atomically dispersed Cu on graphitic carbon nitride as the catalyst. Chemical Engineering Journal, 498, 155359-. https://dx.doi.org/10.1016/j.cej.2024.155359 1385-8947 https://hdl.handle.net/10356/180765 10.1016/j.cej.2024.155359 2-s2.0-85202952943 498 155359 en Chemical Engineering Journal © 2024 Elsevier B.V. All rights are reserved, including those for text and data mining, AI training, and similar technologies. |
| spellingShingle | Engineering Acinetobacter baumannii Single-atom catalysis Liu, Hang Wang, Tianyi Liu, Sixiao Zhou, Xiaoyu Zhang, Lei Sun, Yi Hu, Yongfeng Sharouri, Mohsen Zhang, Yu Teng, Zhenyuan Zhang, Xiuyun Wang, Guoxiu Wang, Chengyin Efficient water disinfection against antibiotic-resistant bacteria by visible-light heterogeneous photo-Fenton-like process with atomically dispersed Cu on graphitic carbon nitride as the catalyst |
| title | Efficient water disinfection against antibiotic-resistant bacteria by visible-light heterogeneous photo-Fenton-like process with atomically dispersed Cu on graphitic carbon nitride as the catalyst |
| title_full | Efficient water disinfection against antibiotic-resistant bacteria by visible-light heterogeneous photo-Fenton-like process with atomically dispersed Cu on graphitic carbon nitride as the catalyst |
| title_fullStr | Efficient water disinfection against antibiotic-resistant bacteria by visible-light heterogeneous photo-Fenton-like process with atomically dispersed Cu on graphitic carbon nitride as the catalyst |
| title_full_unstemmed | Efficient water disinfection against antibiotic-resistant bacteria by visible-light heterogeneous photo-Fenton-like process with atomically dispersed Cu on graphitic carbon nitride as the catalyst |
| title_short | Efficient water disinfection against antibiotic-resistant bacteria by visible-light heterogeneous photo-Fenton-like process with atomically dispersed Cu on graphitic carbon nitride as the catalyst |
| title_sort | efficient water disinfection against antibiotic resistant bacteria by visible light heterogeneous photo fenton like process with atomically dispersed cu on graphitic carbon nitride as the catalyst |
| topic | Engineering Acinetobacter baumannii Single-atom catalysis |
| url | https://hdl.handle.net/10356/180765 |
| work_keys_str_mv | AT liuhang efficientwaterdisinfectionagainstantibioticresistantbacteriabyvisiblelightheterogeneousphotofentonlikeprocesswithatomicallydispersedcuongraphiticcarbonnitrideasthecatalyst AT wangtianyi efficientwaterdisinfectionagainstantibioticresistantbacteriabyvisiblelightheterogeneousphotofentonlikeprocesswithatomicallydispersedcuongraphiticcarbonnitrideasthecatalyst AT liusixiao efficientwaterdisinfectionagainstantibioticresistantbacteriabyvisiblelightheterogeneousphotofentonlikeprocesswithatomicallydispersedcuongraphiticcarbonnitrideasthecatalyst AT zhouxiaoyu efficientwaterdisinfectionagainstantibioticresistantbacteriabyvisiblelightheterogeneousphotofentonlikeprocesswithatomicallydispersedcuongraphiticcarbonnitrideasthecatalyst AT zhanglei efficientwaterdisinfectionagainstantibioticresistantbacteriabyvisiblelightheterogeneousphotofentonlikeprocesswithatomicallydispersedcuongraphiticcarbonnitrideasthecatalyst AT sunyi efficientwaterdisinfectionagainstantibioticresistantbacteriabyvisiblelightheterogeneousphotofentonlikeprocesswithatomicallydispersedcuongraphiticcarbonnitrideasthecatalyst AT huyongfeng efficientwaterdisinfectionagainstantibioticresistantbacteriabyvisiblelightheterogeneousphotofentonlikeprocesswithatomicallydispersedcuongraphiticcarbonnitrideasthecatalyst AT sharourimohsen efficientwaterdisinfectionagainstantibioticresistantbacteriabyvisiblelightheterogeneousphotofentonlikeprocesswithatomicallydispersedcuongraphiticcarbonnitrideasthecatalyst AT zhangyu efficientwaterdisinfectionagainstantibioticresistantbacteriabyvisiblelightheterogeneousphotofentonlikeprocesswithatomicallydispersedcuongraphiticcarbonnitrideasthecatalyst AT tengzhenyuan efficientwaterdisinfectionagainstantibioticresistantbacteriabyvisiblelightheterogeneousphotofentonlikeprocesswithatomicallydispersedcuongraphiticcarbonnitrideasthecatalyst AT zhangxiuyun efficientwaterdisinfectionagainstantibioticresistantbacteriabyvisiblelightheterogeneousphotofentonlikeprocesswithatomicallydispersedcuongraphiticcarbonnitrideasthecatalyst AT wangguoxiu efficientwaterdisinfectionagainstantibioticresistantbacteriabyvisiblelightheterogeneousphotofentonlikeprocesswithatomicallydispersedcuongraphiticcarbonnitrideasthecatalyst AT wangchengyin efficientwaterdisinfectionagainstantibioticresistantbacteriabyvisiblelightheterogeneousphotofentonlikeprocesswithatomicallydispersedcuongraphiticcarbonnitrideasthecatalyst |