Novel architecture of ternary ZnO/PMA/AgI heterojunctions towards boosted visible-light photocatalytic destruction of antibiotics
Visible light-based photodegradation using heterojunctions has emerged as a suitable and environmentally friendly approach for removing antibiotic contaminants. The ease of transferring the photogenerated charges through heterojunctions to prevent their recombination is what makes the photocatalysis...
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| Format: | Article |
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Elsevier
2025-01-01
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| Series: | Results in Surfaces and Interfaces |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666845925000303 |
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| author | Yossor R. Abdulmajeed Saad H. Ammar Nada D. Ali Fatma D. Ali A. Al-Farraji Marwa A. Lafta |
| author_facet | Yossor R. Abdulmajeed Saad H. Ammar Nada D. Ali Fatma D. Ali A. Al-Farraji Marwa A. Lafta |
| author_sort | Yossor R. Abdulmajeed |
| collection | DOAJ |
| description | Visible light-based photodegradation using heterojunctions has emerged as a suitable and environmentally friendly approach for removing antibiotic contaminants. The ease of transferring the photogenerated charges through heterojunctions to prevent their recombination is what makes the photocatalysis process an extremely successful process. Herein, we demonstrated that the constructed ZnO embedded with phosphomolybdic acid (PMA) and AgI ternary heterojunction (ZnO/PMA/AgI) considerably improves the visible-light-induced photocatalytic destruction activity toward levofloxacin (LEV) antibiotic (97.4% within 60 min) compared to binary samples (ZnO/PMA and ZnO/AgI) and single samples (ZnO, PMA, and AgI). Besides, 82% and 77.6% of initial chemical oxygen demand (COD) and total organic carbon (TOC) of real pharmaceutical wastewater sample have been removed over ZnO/PMA/AgI ternary heterojunction within 120 min. This achievement was attributed to the high redox properties of PMA as an effective electron transfer mediator between AgI and ZnO semiconductors. Moreover, the developed heterojunction facilitates the migration and separation of photoproduced charge carriers. Accordingly, the reaction mechanism of LEV degradation over ZnO/PMA/AgI heterojunction has been elucidated and supported by active-species capturing studies, which confirm that •O2−, and in less degree h+ were the main reactive species in the reaction. Besides, after six cyclic degradations, the degradation efficiency of the ZnO/PMA/AgI photocatalyst for LEV stayed about 90%, demonstrating its superb photocatalytic stability. |
| format | Article |
| id | doaj-art-c15480f7b1c64936a4a83be4b6bce205 |
| institution | Kabale University |
| issn | 2666-8459 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Surfaces and Interfaces |
| spelling | doaj-art-c15480f7b1c64936a4a83be4b6bce2052025-02-07T04:48:26ZengElsevierResults in Surfaces and Interfaces2666-84592025-01-0118100443Novel architecture of ternary ZnO/PMA/AgI heterojunctions towards boosted visible-light photocatalytic destruction of antibioticsYossor R. Abdulmajeed0Saad H. Ammar1Nada D. Ali2Fatma D. Ali3A. Al-Farraji4Marwa A. Lafta5Department of Chemical Engineering, College of Engineering, Al-Nahrain University, Jadriya, Baghdad, IraqDepartment of Chemical Engineering, College of Engineering, Al-Nahrain University, Jadriya, Baghdad, Iraq; College of Engineering, University of Warith Al-Anbiyaa, Karbala, Iraq; Corresponding author. Department of Chemical Engineering, College of Engineering, Al-Nahrain University, Jadriya, Baghdad, Iraq.Department of Chemical Engineering, College of Engineering, Al-Nahrain University, Jadriya, Baghdad, IraqDepartment of Chemical Engineering, College of Engineering, Al-Nahrain University, Jadriya, Baghdad, IraqDepartment of Chemical Engineering, College of Engineering, Al-Nahrain University, Jadriya, Baghdad, IraqOil Exploration Company, Ministry of Oil, Baghdad, IraqVisible light-based photodegradation using heterojunctions has emerged as a suitable and environmentally friendly approach for removing antibiotic contaminants. The ease of transferring the photogenerated charges through heterojunctions to prevent their recombination is what makes the photocatalysis process an extremely successful process. Herein, we demonstrated that the constructed ZnO embedded with phosphomolybdic acid (PMA) and AgI ternary heterojunction (ZnO/PMA/AgI) considerably improves the visible-light-induced photocatalytic destruction activity toward levofloxacin (LEV) antibiotic (97.4% within 60 min) compared to binary samples (ZnO/PMA and ZnO/AgI) and single samples (ZnO, PMA, and AgI). Besides, 82% and 77.6% of initial chemical oxygen demand (COD) and total organic carbon (TOC) of real pharmaceutical wastewater sample have been removed over ZnO/PMA/AgI ternary heterojunction within 120 min. This achievement was attributed to the high redox properties of PMA as an effective electron transfer mediator between AgI and ZnO semiconductors. Moreover, the developed heterojunction facilitates the migration and separation of photoproduced charge carriers. Accordingly, the reaction mechanism of LEV degradation over ZnO/PMA/AgI heterojunction has been elucidated and supported by active-species capturing studies, which confirm that •O2−, and in less degree h+ were the main reactive species in the reaction. Besides, after six cyclic degradations, the degradation efficiency of the ZnO/PMA/AgI photocatalyst for LEV stayed about 90%, demonstrating its superb photocatalytic stability.http://www.sciencedirect.com/science/article/pii/S2666845925000303AgIPharmaceutical wastewaterPhotocatalytic heterojunctionsPhosphomolybdic-acidLevofloxacinZnO |
| spellingShingle | Yossor R. Abdulmajeed Saad H. Ammar Nada D. Ali Fatma D. Ali A. Al-Farraji Marwa A. Lafta Novel architecture of ternary ZnO/PMA/AgI heterojunctions towards boosted visible-light photocatalytic destruction of antibiotics Results in Surfaces and Interfaces AgI Pharmaceutical wastewater Photocatalytic heterojunctions Phosphomolybdic-acid Levofloxacin ZnO |
| title | Novel architecture of ternary ZnO/PMA/AgI heterojunctions towards boosted visible-light photocatalytic destruction of antibiotics |
| title_full | Novel architecture of ternary ZnO/PMA/AgI heterojunctions towards boosted visible-light photocatalytic destruction of antibiotics |
| title_fullStr | Novel architecture of ternary ZnO/PMA/AgI heterojunctions towards boosted visible-light photocatalytic destruction of antibiotics |
| title_full_unstemmed | Novel architecture of ternary ZnO/PMA/AgI heterojunctions towards boosted visible-light photocatalytic destruction of antibiotics |
| title_short | Novel architecture of ternary ZnO/PMA/AgI heterojunctions towards boosted visible-light photocatalytic destruction of antibiotics |
| title_sort | novel architecture of ternary zno pma agi heterojunctions towards boosted visible light photocatalytic destruction of antibiotics |
| topic | AgI Pharmaceutical wastewater Photocatalytic heterojunctions Phosphomolybdic-acid Levofloxacin ZnO |
| url | http://www.sciencedirect.com/science/article/pii/S2666845925000303 |
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