In situ loading of Ag2S particle on Nb2O5 sheets for synergistically enhanced photocatalytic decontamination of methylene blue
| Autor: | Xinlu Liu, Shengqing Zhu, Yurou Zhang, Zuming He, Zhengyi Huang, Yongmei Xia, Jiangbin Su, Xiaofei Fu |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
Radical Composite number Heterojunction Condensed Matter Physics Photochemistry Atomic and Molecular Physics and Optics Hydrothermal circulation Electronic Optical and Magnetic Materials chemistry.chemical_compound chemistry Photocatalysis Particle Irradiation Electrical and Electronic Engineering Methylene blue |
| Zdroj: | Journal of Materials Science: Materials in Electronics. 33:2125-2137 |
| ISSN: | 1573-482X 0957-4522 |
| DOI: | 10.1007/s10854-021-07419-8 |
| Popis: | Novel p-Ag2S/n-Nb2O5 heterojunction composites were successfully obtained for the first time by hydrothermal and ion-exchange deposition way. A series of photocatalytic tests and characterization results confirm that the optimized 10 wt% Ag2S/Nb2O5 heterojunction composite exhibits excellent photocatalytic degradation activity for methylene blue (92.8%) under simulated solar light irradiation, which is approximately 2.7 times higher than that of pure Nb2O5 (34.3%) and 2.2 times higher than that of Ag2S (42.0%). The outstanding photocatalytic activity of Ag2S/Nb2O5 heterojunction composites could be ascribed to enhance simulated solar light response and effectively accelerates photo-induced charge separation and migration via a Z-scheme mechanism. Furthermore, the trapping experimental results confirm that both superoxide radicals (·O− 2) and hydroxyl radicals (·OH) play a key role in photocatalytic degradation process. |
| Databáze: | OpenAIRE |
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