Visible-light photocatalytic activity of Bi2WO6/Mn0.6Zn0.4Fe2O4/graphene oxide composites towards Rhodamine B
| Autor: | Min Zeng, Jian-ming Pang, Shi-wen Li, Bao-quan Lin, Jin-tao Yue |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
Graphene Composite number Oxide chemistry.chemical_element Condensed Matter Physics Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Bismuth law.invention chemistry.chemical_compound chemistry Tungstate Chemical engineering law Photocatalysis Rhodamine B Electrical and Electronic Engineering Visible spectrum |
| Zdroj: | Journal of Materials Science: Materials in Electronics. 32:19635-19645 |
| ISSN: | 1573-482X 0957-4522 |
| Popis: | Visible-light driven photocatalytic materials have been widely used in the removal of organic pollutants in water. Bi2WO6/Mn0.6Zn0.4Fe2O4/graphene oxide (GO) integrated particles were prepared by thermosynthesis method as photocatalysts towards Rhodamine B solution. The bismuth tungstate particles possessed excellent visible light driven photocatalytic activity due to the wide band gap and the layer structure of the materials. Ferromagnetic Mn–Zn ferrite integrated within the particles benefited magnetically separation and retrieval of the products. The incorporated GO helped transfer the charge on the structures so that further enhanced the photocatalytic ability of the composite. The morphology of the composite was influenced by the pH value of the reaction solution. The decomposition of Rhodamine B under visible light irradiation also strongly depended on the pH value. The decomposition rate was higher than 90% after 4 h testing. The photocatalytic performance of the composite remained high level after recycling utilization. The composite exhibits both remarkable photocatalytic ability and very good reusability, ascribed to the flaky Bi2WO6 structure incorporated with GO and magnetic species. |
| Databáze: | OpenAIRE |
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