Ag3PO4 quantum dot sensitized BiPO4: A novel p–n junction Ag3PO4/BiPO4 with enhanced visible-light photocatalytic activity
| Autor: | Shifu Chen, Benyan Xu, Huifang Ye, Haili Lin, Jing Cao |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
Materials science
Process Chemistry and Technology Inorganic chemistry Heterojunction General Chemistry Photochemistry Catalysis chemistry.chemical_compound chemistry X-ray photoelectron spectroscopy Quantum dot Methyl orange Photocatalysis p–n junction High-resolution transmission electron microscopy Visible spectrum |
| Zdroj: | Catalysis Communications. 37:55-59 |
| ISSN: | 1566-7367 |
| DOI: | 10.1016/j.catcom.2013.03.026 |
| Popis: | Ag3PO4 quantum dot sensitized BiPO4, a novel p–n junction Ag3PO4/BiPO4 photocatalyst, was prepared by co-precipitation hydrothermal method and characterized by XRD, XPS, SEM, TEM, HRTEM, EDS and DRS. Ag3PO4/BiPO4 exhibited much higher photocatalytic activity than Ag3PO4 and BiPO4 for the degradation of methyl orange under visible light (λ > 420 nm). The enhanced photocatalytic activity of Ag3PO4/BiPO4 could be mainly ascribed to the strong visible-light absorption originating from the quantum dot sensitization of Ag3PO4 and high efficient separation of photogenerated electron–hole pairs through Ag3PO4/BiPO4 heterojunction. Moreover, O2− and OH were the main reactive species. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect