Abstract
TiO2 nanoparticles doped with different concentrations of Rb were prepared by sol–gel method. The crystal structures of samples were characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM). It was confirmed by the Rietveld refinement method that the as-prepared samples crystallize in anatase phase and Rb do** induces expansion and distortion of the crystal lattice. Compared with the pure TiO2, the Rb-doped nanoparticles have smaller crystal size and better dispersibility. Degradation rate of methylene blue was used to evaluate the photocatalytic activity of Rb–TiO2. It indicated that do** Rb into TiO2 can effectively improve the photocatalytic activity of TiO2 and the mechanisms were discussed in detail. When using the sample doped with 0.20% Rb, methylene blue degraded with the fastest rate (97% within 60 min).
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This study was financially supported by the Science and Technology Project of Bei**g (No. Z151100003315016).
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Jia, L., Yang, LM., Wang, W. et al. Preparation and characterization of Rb-doped TiO2 powders for photocatalytic applications. Rare Met. 43, 555–561 (2024). https://doi.org/10.1007/s12598-019-01241-2
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DOI: https://doi.org/10.1007/s12598-019-01241-2