期刊
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
卷 27, 期 11, 页码 11866-11872出版社
SPRINGER
DOI: 10.1007/s10854-016-5329-0
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资金
- Anhui Provincial Natural Science Foundation of China [1508085SME219]
Mesoporous Ce-doped TiO2 nanoparticles with different content of Ce are prepared by one-step hydrothermal method. The samples are characterized by XRD, TEM, Raman, XPS, BET, PL and UV-vis measurements. The results show that TiO2 doped with Ce can reduce the crystallite size. Under UV irradiation, the Ce-doped TiO2 samples exhibit much higher photocatalytic activity than pure TiO2 and commercial P25 for the degradation of Rhodamine (RhB). The maximum photocatalytic reaction rate constant for Ce-doped TiO2 sample is obtained as 0.021 min(-1). The unique photocatalytic properties of Ce-doped TiO2 are attributed to the improvement of photogenerated electron-hole pairs separation efficiency and formation of more reactive oxygen species owing to the presence of Ce3+/Ce4+. A degradation mechanism is proposed for the degradation of RhB for Ce-doped TiO2 photocatalyst under UV light.
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