Enhanced photocatalytic performance of Er-doped Bi 24 O 31 Br 10 : Facile synthesis and photocatalytic mechanism
| Autor: | Zhi Lin Liu, Jin Long Liu, Xiang Ji, Jing Wen Zhang, Zhang Sheng Liu, Ting Fei Zhou |
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| Rok vydání: | 2016 |
| Předmět: |
Materials science
Dopant Scanning electron microscope Mechanical Engineering Doping Nanotechnology 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Photochemistry 01 natural sciences 0104 chemical sciences Catalysis chemistry.chemical_compound X-ray photoelectron spectroscopy chemistry Mechanics of Materials Rhodamine B Photocatalysis Methyl orange General Materials Science 0210 nano-technology |
| Zdroj: | Materials Research Bulletin. 76:256-263 |
| ISSN: | 0025-5408 |
| DOI: | 10.1016/j.materresbull.2015.12.033 |
| Popis: | Erbium (Er) doped Bi24O31Br10 samples were successfully prepared by using a solvothermal method. The samples were characterized by XRD, XPS, SEM, TEM, BET, DRS, PL and EIS. The photocatalytic activity was evaluated by the degradation of rhodamine B (RhB) and methyl orange (MO) under visible light irradiation. The result shows that Er dopant induces a significant improvement in the photocatalytic activity. 1.0% Er–Bi24O31Br10 sample exhibits the best photocatalytic performance. The enhanced photocatalytic activity is attributed to the effective trapping of photogenerated electron by Er3+ ion and the up-conversion process resulting from Er dopant. In addition, it is found that holes and super-oxide radicals play main role in the photocatalytic degradation of RhB and MO. |
| Databáze: | OpenAIRE |
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