Enhanced visible‐light photocatalytic activity by Ag 3 PO 4 –Ag–Bi 2 WO 6 Z‐scheme heterojunction
| Autor: | Qian Yang, Zhichang Duan, Wensong Lin, Qicheng Zhang, Sen Xu |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Biomedical Engineering Nanoparticle Bioengineering Heterojunction 02 engineering and technology Visible light photocatalytic 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Decomposition 0104 chemical sciences Catalysis chemistry.chemical_compound Nanolithography chemistry Chemical engineering Photocatalysis General Materials Science 0210 nano-technology Methylene blue |
| Zdroj: | Micro & Nano Letters. 15:1055-1058 |
| ISSN: | 1750-0443 |
| DOI: | 10.1049/mnl.2020.0212 |
| Popis: | A novel material of Ag3PO4–Ag–Bi2WO6 Z-scheme heterojunction has been successfully synthesised using a simple deposition–precipitation method. In this work, the authors used diverse techniques to characterise the structure, catalytic performance, and morphology of the prepared materials. Meanwhile, the catalytic performance of prepared materials was evaluated by degrading organic pigment. The excellent catalytic performance of the material is according to the collaboration of Ag nanoparticles in the Ag3PO4–Ag–Bi2WO6 heterojunction. Ag nanoparticles enhance the stableness and activeness of the catalyst by acting as a charge transfer bridge between Ag3PO4 and Bi2WO6, which results in improving electron–hole pairs’ separation. Compared with pure Bi2WO6 and Ag3PO4–Bi2WO6 materials, Ag3PO4–Ag–Bi2WO6 has higher decomposition effectiveness of methylene blue under the same conditions. The photocatalytic mechanism was put forward and the process of the hole–electron pair's separation is discussed in detail, which is due to the formation of the Z-scheme heterojunction with Ag nanoparticles acted as a charge transfer bridge. |
| Databáze: | OpenAIRE |
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