The advanced photocatalytic performance of V doped CuWO<inf>4</inf> for water splitting to produce hydrogen
المؤلف | Le Minh Tri, Nguyen |
المؤلف | Trung, Do Quang |
المؤلف | Van Thuan, Doan |
المؤلف | Dieu Cam, Nguyen Thi |
المؤلف | Al Tahtamouni, Talal |
المؤلف | Pham, Thanh Dong |
المؤلف | Duc, Dao Sy |
المؤلف | Thanh Tung, Mai Hung |
المؤلف | Van Ha, Hoang |
المؤلف | Anh Thu, Ngo Hong |
المؤلف | Trang, Hoang Thu |
تاريخ الإتاحة | 2023-08-24T11:12:56Z |
تاريخ النشر | 2020-07-17 |
اسم المنشور | International Journal of Hydrogen Energy |
المعرّف | http://dx.doi.org/10.1016/j.ijhydene.2019.06.132 |
الاقتباس | Tri, N. L. M., Van Thuan, D., Cam, N. T. D., Al Tahtamouni, T., Pham, T. D., Duc, D. S., ... & Trang, H. T. (2020). The advanced photocatalytic performance of V doped CuWO4 for water splitting to produce hydrogen. International Journal of Hydrogen Energy, 45(36), 18186-18194. |
الرقم المعياري الدولي للكتاب | 03603199 |
الملخص | In the study, we successfully conducted vanadium doping to improve photocatalytic performance of the CuWO4 for water splitting to produce hydrogen. The doping mechanism, optimal doping ratio and material stability were investigated by various characterization methods and water splitting experiments. We found that the V substituted several W elements of the CuWO4 crystal. In the V–CuWO4, V dopant existed in form of the V5+, which created new energy level between the conduction band (CB) and the valence band (VB) of the CuWO4 to improve charge transfer as well as to prevent the e− and h+ recombination of the material. The substitution of W by V dopant also led the formation of Cu+ and W5+ in the CuWO4 crystal. The formation of Cu+ and W5+ in the CuWO4 crystal not only narrowed the energy band gap but also increased the CB potential of the material. Therefore, the V–CuWO4 generated significant amount of e− under visible light and the generated e− was strong enough to react with H+ to produce H2. The optimal V/W ratio for maximum improving photocatalytic performance of the CuWO4 was 6 wt%. Finally, we investigated that our prepared V–CuWO4 showed high stability during long-term water splitting process. |
راعي المشروع | This research is funded by Vietnam National Foundation for Science and Technology Development (NAFOSTED) under grant number 104.05-2018.27 . |
اللغة | en |
الناشر | Elsevier Ltd |
الموضوع | CuWO 4 Doping mechanism Hydrogen Stability Vanadium doping |
النوع | Article |
الصفحات | 18186-18194 |
رقم العدد | 36 |
رقم المجلد | 45 |
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