Fabrication and photocatalytic performance of C, N, F-tridoped TiO2 nanotubes
| Autor: | Ping Wang, Gui Chang Wang, Wei Ping Huang, Lu Lu Ma, Bao Lin Zhu, Dan Guo, Shou Min Zhang, Lili Wang, Xue Wang |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Anatase
Materials science Dopant Band gap 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Catalysis 0104 chemical sciences law.invention chemistry.chemical_compound X-ray photoelectron spectroscopy chemistry law Methyl orange Photocatalysis Calcination 0210 nano-technology Nuclear chemistry |
| Zdroj: | Catalysis Today. 327:182-189 |
| ISSN: | 0920-5861 |
| DOI: | 10.1016/j.cattod.2018.05.007 |
| Popis: | By impregnating the thermal stable TiO2 nanotubes (C/TiO2NTs) in NH4F solution with different concentrations and subsequent calcination treatment at different temperatures, C, N, F-tridoped TiO2 nanotubes (C, N, F/TiO2NTs) were prepared. XRD, XPS, TEM, TG-DTG, UV–vis and nitrogen adsorption were used to and characterize the prepared materials. The influences of dopants, calcination temperature and NH4F concentration on the catalytic performances of C, N, F/TiO2NTs under UV light and simulated sunlight were investigated by using methyl orange solution as simulant wastewater. Obtained results indicated that the C, N, F/TiO2NTs exhibited higher photocatalytic activity than the C-doped or N, F-codoped ones, and the C, N, F/TiO2NTs showed the best photocatalytic performance when they were calcinated at 300 °C and impregnated by 1 wt.% NH4F solution. The electronic density of states (DOS) analysis results implied that the C, N, F-tridoping could improve the electronic transition and narrow the band gap of anatase TiO2, and resulted in improved photocatalytic performance. The synergistic effects of the three dopants were also discussed. |
| Databáze: | OpenAIRE |
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