Rare-earth-doped tungsten oxide microspheres with highly enhanced photocatalytic activites
| Autor: | Xueting Chang, Linge Chai, Zhao Li, Xiaokun Jin, Shibin Sun, Le Xu, Danxia Gu |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Dopant Band gap Process Chemistry and Technology Inorganic chemistry Doping Energy-dispersive X-ray spectroscopy chemistry.chemical_element 02 engineering and technology Tungsten 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials X-ray photoelectron spectroscopy chemistry Materials Chemistry Ceramics and Composites Photocatalysis Nanorod 0210 nano-technology |
| Zdroj: | Ceramics International. 43:10263-10269 |
| ISSN: | 0272-8842 |
| Popis: | Rare-earth-doped WO 2.72 microspheres (RE-WO 2.72 MSs) have been successfully synthesized by using a facile solvothermal route with tungsten salt as precursor, RE (RE=Ce, La, and Y) metal salts as dopants, and ethanol as solvent. Results of X-ray diffraction (XRD), X-ray photoelectron spectrometry (XPS), and energy dispersive spectroscopy (EDS) showed that the solvothermal process allowed for the homogeneous doping of WO 2.72 while maintaining the original crystal structure. The RE doping could effectively engineer the bandgap of WO 2.72 , which could not only enhance the light-harvesting ability but also deduce up-shift of both the conduction band and valence band. Compared to the undoped WO 2.72 nanorods (NRs), the RE-WO 2.72 MSs exhibited highly enhanced photocatalytic properties for the degradation of methylene blue (MB) under full spectrum light irradiation. This work provides a versatile strategy for the synthesis of RE-doped tungsten oxides and can be extended to the doping of other oxide semiconductors. |
| Databáze: | OpenAIRE |
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