Photoelectrodeposition of Ag3PO4 nanoparticles on BiVO4 photoanode for enhancing its photoelectrochemical water oxidation performance
Bismuth vanadate (BiVO4) has emerged as one of the most promising materials that can be used for the fabrication of solar-driven water splitting photoanodes. However, its photocatalytic activity is limited by the low charge carriers’ mobility, fast charge carrier recombination, and the slow kinetics...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-06-01
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| Series: | Journal of Science: Advanced Materials and Devices |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2468217923000163 |
| _version_ | 1827941653146501120 |
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| author | Hoang V. Le Ly T. Le Hyuksu Han Thuy T.D. Ung Phong D. Tran |
| author_facet | Hoang V. Le Ly T. Le Hyuksu Han Thuy T.D. Ung Phong D. Tran |
| author_sort | Hoang V. Le |
| collection | DOAJ |
| description | Bismuth vanadate (BiVO4) has emerged as one of the most promising materials that can be used for the fabrication of solar-driven water splitting photoanodes. However, its photocatalytic activity is limited by the low charge carriers’ mobility, fast charge carrier recombination, and the slow kinetics of the water oxidation reaction. In this study, silver phosphate nanoparticles (Ag3PO4 NPs) are decorated on the BiVO4 surface via a facile photodeposition of Ag NPs, which are subsequently oxidized into Ag3PO4 NPs by a photoelectrochemical oxidation process. We demonstrate that Ag3PO4 NPs play as a passivator to reduce the charge carrier recombination on the BiVO4 surface and to accelerate the water oxidation reaction at the BiVO4/electrolyte interface. The best BiVO4/Ag3PO4 photoanode generates a photocatalytic current density of ca. 4.1 mA/cm2 when it is operated at 1.23 V vs. RHE in a pH 7 phosphate electrolyte and under 1 sun illumination. This photocatalytic performance is more than twice compared to that obtained for the pristine BiVO4 photoanode. |
| first_indexed | 2024-03-13T09:41:53Z |
| format | Article |
| id | doaj.art-d37fbaf6b77a4cbd9afb1ef8e5d6919b |
| institution | Directory Open Access Journal |
| issn | 2468-2179 |
| language | English |
| last_indexed | 2024-03-13T09:41:53Z |
| publishDate | 2023-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Science: Advanced Materials and Devices |
| spelling | doaj.art-d37fbaf6b77a4cbd9afb1ef8e5d6919b2023-05-25T04:24:46ZengElsevierJournal of Science: Advanced Materials and Devices2468-21792023-06-0182100547Photoelectrodeposition of Ag3PO4 nanoparticles on BiVO4 photoanode for enhancing its photoelectrochemical water oxidation performanceHoang V. Le0Ly T. Le1Hyuksu Han2Thuy T.D. Ung3Phong D. Tran4Institute of Science and Technology, TNU-University of Sciences, Thai Nguyen, Viet Nam; Corresponding author.University of Science and Technology of Hanoi, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Hanoi, 100000 Viet NamDepartment of Energy Engineering, Konkuk University, 120 Neungdong-ro Gwangjin-gu, Seoul, 05029 Republic of KoreaInstitute of Materials Science, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Hanoi, 100000 Viet NamUniversity of Science and Technology of Hanoi, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Hanoi, 100000 Viet Nam; Corresponding author.Bismuth vanadate (BiVO4) has emerged as one of the most promising materials that can be used for the fabrication of solar-driven water splitting photoanodes. However, its photocatalytic activity is limited by the low charge carriers’ mobility, fast charge carrier recombination, and the slow kinetics of the water oxidation reaction. In this study, silver phosphate nanoparticles (Ag3PO4 NPs) are decorated on the BiVO4 surface via a facile photodeposition of Ag NPs, which are subsequently oxidized into Ag3PO4 NPs by a photoelectrochemical oxidation process. We demonstrate that Ag3PO4 NPs play as a passivator to reduce the charge carrier recombination on the BiVO4 surface and to accelerate the water oxidation reaction at the BiVO4/electrolyte interface. The best BiVO4/Ag3PO4 photoanode generates a photocatalytic current density of ca. 4.1 mA/cm2 when it is operated at 1.23 V vs. RHE in a pH 7 phosphate electrolyte and under 1 sun illumination. This photocatalytic performance is more than twice compared to that obtained for the pristine BiVO4 photoanode.http://www.sciencedirect.com/science/article/pii/S2468217923000163BiVO4Ag3PO4PhotoanodePhotocatalystsWater splitting |
| spellingShingle | Hoang V. Le Ly T. Le Hyuksu Han Thuy T.D. Ung Phong D. Tran Photoelectrodeposition of Ag3PO4 nanoparticles on BiVO4 photoanode for enhancing its photoelectrochemical water oxidation performance Journal of Science: Advanced Materials and Devices BiVO4 Ag3PO4 Photoanode Photocatalysts Water splitting |
| title | Photoelectrodeposition of Ag3PO4 nanoparticles on BiVO4 photoanode for enhancing its photoelectrochemical water oxidation performance |
| title_full | Photoelectrodeposition of Ag3PO4 nanoparticles on BiVO4 photoanode for enhancing its photoelectrochemical water oxidation performance |
| title_fullStr | Photoelectrodeposition of Ag3PO4 nanoparticles on BiVO4 photoanode for enhancing its photoelectrochemical water oxidation performance |
| title_full_unstemmed | Photoelectrodeposition of Ag3PO4 nanoparticles on BiVO4 photoanode for enhancing its photoelectrochemical water oxidation performance |
| title_short | Photoelectrodeposition of Ag3PO4 nanoparticles on BiVO4 photoanode for enhancing its photoelectrochemical water oxidation performance |
| title_sort | photoelectrodeposition of ag3po4 nanoparticles on bivo4 photoanode for enhancing its photoelectrochemical water oxidation performance |
| topic | BiVO4 Ag3PO4 Photoanode Photocatalysts Water splitting |
| url | http://www.sciencedirect.com/science/article/pii/S2468217923000163 |
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