Abstract
Gadolinium–boron codoped and mono-doped TiO2 nanoparticles were prepared using a sol–gel method, and tested for photocatalytic activity by the UV light after a further calcination process. For comparison, a pure TiO2 sample was also prepared and tested under the same conditions. The prepared catalysts were characterized by X-ray diffraction, scanning electron microscope, and UV–Vis spectra. The photocatalytic activity of the samples was evaluated through the photo-degradation of three different dyes under UV light. The experiments demonstrated that the gadolinium–boron codoped TiO2 (Gd–B–TiO2) sample calcined at 500 °C possessed the best photocatalytic activity, and the photodegradation rate of the Reactive Brilliant Red K2G aqueous solution could reach to 95.7% under UV irradiation for 80 min. The results showed that Gd–B–TiO2 has smaller crystallite size and higher photocatalytic activity than that of mono-doped TiO2 samples and undoped TiO2.
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This work was supported by the National Natural Science Foundation of China (No. 20571025), Nature Science Foundation of Henan Province (No. 0424270073).
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Niu, X., Lu, X., Cui, T. et al. A comparative study on characterization and photocatalytic activities of gadolinium–boron codoped and mono-doped TiO2 nanoparticles. Res Chem Intermed 38, 807–816 (2012). https://doi.org/10.1007/s11164-011-0419-3
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DOI: https://doi.org/10.1007/s11164-011-0419-3