Effect of Fe2+/Fe3+ ratio on photocatalytic activities of Zn1-Fe O nanoparticles fabricated by the auto combustion method
| Autor: | Ruidi Liu, Xiaoru Zhao, Libing Duan, Yangyang Zhang |
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| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Materials science Band gap Process Chemistry and Technology Doping Nanoparticle 02 engineering and technology 021001 nanoscience & nanotechnology Combustion 01 natural sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials chemistry.chemical_compound Chemical engineering chemistry X-ray photoelectron spectroscopy 0103 physical sciences Materials Chemistry Ceramics and Composites Photocatalysis Methyl orange Degradation (geology) 0210 nano-technology |
| Zdroj: | Ceramics International. 46:1-7 |
| ISSN: | 0272-8842 |
| Popis: | Zn1-xFexO nanoparticles with Fe doping content from 0 % to 6 % were fabricated by a facile auto combustion method. SEM, XRD, PL and XPS were carried out to characterize the morphologies, structures, optical properties and surface chemical states of the samples. The photocatalytic properties were also investigated toward Methyl Orange (MO) degradation. It was found that the maximum photocatalytic activity was obtained by 4 % Fe-doped ZnO nanoparticles, which was ascribed to the highest ratio of Fe2+/Fe3+. The experimental results and DFT calculations indicated that Fe could effectively affect the photocatalytic activity of ZnO nanoparticles, dependent on Fe2+/Fe3+ ratio and doping contents. Furthermore, a conceivable mechanism of band gap structure and carrier transfer of Fe2+/Fe3+ co-existed Zn1-xFexO was proposed according to experimental analyses and theory calculations. |
| Databáze: | OpenAIRE |
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