Charge separation enhancement of triple-phase Ag3PO4-AgI-ZnO heterojunction for dye photodegradation
Pristine ZnO (PC1), AgI (PC2), Ag3PO4 (PC3), and mixed system polyvinyl alcohol (PVA)-assisted AgI-ZnO-Ag3PO4 (PC4) photocatalysts were prepared for the degradation of synthetic methylene blue (MB) dye under visible light. The prepared pristine and nanocomposite photocatalysts were characterized by...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-07-01
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| Series: | Results in Chemistry |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2211715625003108 |
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| author | Teketel Girma Gindose Gebrehiwot Gebreslassie Tessema Derbe Tesfay G. Ashebr Yitayew Tesfaye Daba Fanyana M Mtunzi Thokozani Xaba H.L. Rutto Enyew Amare Zereffa Tsegaye Belege Atisme |
| author_facet | Teketel Girma Gindose Gebrehiwot Gebreslassie Tessema Derbe Tesfay G. Ashebr Yitayew Tesfaye Daba Fanyana M Mtunzi Thokozani Xaba H.L. Rutto Enyew Amare Zereffa Tsegaye Belege Atisme |
| author_sort | Teketel Girma Gindose |
| collection | DOAJ |
| description | Pristine ZnO (PC1), AgI (PC2), Ag3PO4 (PC3), and mixed system polyvinyl alcohol (PVA)-assisted AgI-ZnO-Ag3PO4 (PC4) photocatalysts were prepared for the degradation of synthetic methylene blue (MB) dye under visible light. The prepared pristine and nanocomposite photocatalysts were characterized by advanced techniques. HR-TEM finding indicates the intimate contact of PC3 and PC2 with PC1. The combination of PC3 and PC2 with PC1 exhibited a reduced band gap 2.41 eV and increased surface area of 100.11 m2/g, respectevely. The photocatalytic activities of the synthesized materials over MB were tested. A 47%, 53%, 62%, and 98% of MB degradation efficiencies were achieved for PC1, PC2, PC3, and PC4, respectively. Besides, the PC4 nanocomposite exhibited excellent photocatalytic activity compared to others. This catalytic improvement could be due to the cumulative effect of the different phases. The catalytic potential of the PC4 nanocomposite was 98%. The stability and reusability of the PC4 nanocomposite were studied for four cycles where the XRD analysis showed almost the same phases before and after reuse were observed. Furthermore, a potential photocatalytic mechanism for the degradation of methylene blue has been put forth, which could provide stable Z-scheme heterojunctions using the pristine photocatalysts. |
| format | Article |
| id | doaj-art-b499b2567ec841afa0ffe33a7b7c196e |
| institution | Kabale University |
| issn | 2211-7156 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Chemistry |
| spelling | doaj-art-b499b2567ec841afa0ffe33a7b7c196e2025-08-20T03:39:09ZengElsevierResults in Chemistry2211-71562025-07-011610232710.1016/j.rechem.2025.102327Charge separation enhancement of triple-phase Ag3PO4-AgI-ZnO heterojunction for dye photodegradationTeketel Girma Gindose0Gebrehiwot Gebreslassie1Tessema Derbe2Tesfay G. Ashebr3Yitayew Tesfaye Daba4Fanyana M Mtunzi5Thokozani Xaba6H.L. Rutto7Enyew Amare Zereffa8Tsegaye Belege Atisme9Department of Industrial Chemistry, Addis Ababa Science and Technology University, P.O.Box 16417, Addis Ababa, Ethiopia; Nanotechnology Centre of Excellence, Addis Ababa Science and Technology University, P.O. Box 1647, Addis Ababa, Ethiopia; Corresponding authors at: Department of Industrial Chemistry, Addis Ababa Science and Technology University, P.O.Box 16417, Addis Ababa, Ethiopia.Department of Industrial Chemistry, Addis Ababa Science and Technology University, P.O.Box 16417, Addis Ababa, Ethiopia; Nanotechnology Centre of Excellence, Addis Ababa Science and Technology University, P.O. Box 1647, Addis Ababa, Ethiopia; School of Mechanical and Electrical Engineering, University of Electronic Science and Technology of China, Chengdu 611731, ChinaDepartment of Industrial Chemistry, Addis Ababa Science and Technology University, P.O.Box 16417, Addis Ababa, Ethiopia; Nanotechnology Centre of Excellence, Addis Ababa Science and Technology University, P.O. Box 1647, Addis Ababa, Ethiopia; Department of Chemistry, Wachemo University, P.O. Box 667, Hossana, EthiopiaDepartment of Industrial Chemistry, Addis Ababa Science and Technology University, P.O.Box 16417, Addis Ababa, Ethiopia; Nanotechnology Centre of Excellence, Addis Ababa Science and Technology University, P.O. Box 1647, Addis Ababa, EthiopiaDepartment of Industrial Chemistry, Addis Ababa Science and Technology University, P.O.Box 16417, Addis Ababa, Ethiopia; Nanotechnology Centre of Excellence, Addis Ababa Science and Technology University, P.O. Box 1647, Addis Ababa, EthiopiaDepartment of Biotechnology and Chemistry, Vaal University of Technology, Moshoeshoe Road, Sebokengn, 1983, South AfricaDepartment of Biotechnology and Chemistry, Vaal University of Technology, Moshoeshoe Road, Sebokengn, 1983, South AfricaDepartment of Biotechnology and Chemistry, Vaal University of Technology, Moshoeshoe Road, Sebokengn, 1983, South AfricaDepartment of Applied Chemistry, School of Applied Natural Science, Adama Science and Technology University, P.O. Box 1888, Adama, EthiopiaDepartment of Industrial Chemistry, Addis Ababa Science and Technology University, P.O.Box 16417, Addis Ababa, Ethiopia; Nanotechnology Centre of Excellence, Addis Ababa Science and Technology University, P.O. Box 1647, Addis Ababa, Ethiopia; Corresponding authors at: Department of Industrial Chemistry, Addis Ababa Science and Technology University, P.O.Box 16417, Addis Ababa, Ethiopia.Pristine ZnO (PC1), AgI (PC2), Ag3PO4 (PC3), and mixed system polyvinyl alcohol (PVA)-assisted AgI-ZnO-Ag3PO4 (PC4) photocatalysts were prepared for the degradation of synthetic methylene blue (MB) dye under visible light. The prepared pristine and nanocomposite photocatalysts were characterized by advanced techniques. HR-TEM finding indicates the intimate contact of PC3 and PC2 with PC1. The combination of PC3 and PC2 with PC1 exhibited a reduced band gap 2.41 eV and increased surface area of 100.11 m2/g, respectevely. The photocatalytic activities of the synthesized materials over MB were tested. A 47%, 53%, 62%, and 98% of MB degradation efficiencies were achieved for PC1, PC2, PC3, and PC4, respectively. Besides, the PC4 nanocomposite exhibited excellent photocatalytic activity compared to others. This catalytic improvement could be due to the cumulative effect of the different phases. The catalytic potential of the PC4 nanocomposite was 98%. The stability and reusability of the PC4 nanocomposite were studied for four cycles where the XRD analysis showed almost the same phases before and after reuse were observed. Furthermore, a potential photocatalytic mechanism for the degradation of methylene blue has been put forth, which could provide stable Z-scheme heterojunctions using the pristine photocatalysts.http://www.sciencedirect.com/science/article/pii/S2211715625003108 |
| spellingShingle | Teketel Girma Gindose Gebrehiwot Gebreslassie Tessema Derbe Tesfay G. Ashebr Yitayew Tesfaye Daba Fanyana M Mtunzi Thokozani Xaba H.L. Rutto Enyew Amare Zereffa Tsegaye Belege Atisme Charge separation enhancement of triple-phase Ag3PO4-AgI-ZnO heterojunction for dye photodegradation Results in Chemistry |
| title | Charge separation enhancement of triple-phase Ag3PO4-AgI-ZnO heterojunction for dye photodegradation |
| title_full | Charge separation enhancement of triple-phase Ag3PO4-AgI-ZnO heterojunction for dye photodegradation |
| title_fullStr | Charge separation enhancement of triple-phase Ag3PO4-AgI-ZnO heterojunction for dye photodegradation |
| title_full_unstemmed | Charge separation enhancement of triple-phase Ag3PO4-AgI-ZnO heterojunction for dye photodegradation |
| title_short | Charge separation enhancement of triple-phase Ag3PO4-AgI-ZnO heterojunction for dye photodegradation |
| title_sort | charge separation enhancement of triple phase ag3po4 agi zno heterojunction for dye photodegradation |
| url | http://www.sciencedirect.com/science/article/pii/S2211715625003108 |
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