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Volume 28 Issue 10
Aug.  2021
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Article Contents
CUI Yumin, FAN Shaohua, ZHANG Ying. Synthesis,characterization and photocatalytic activity of rare-earth doped TiO2 nanometer particles[J]. Chinese Journal of Engineering, 2006, 28(10): 956-958. doi: 10.13374/j.issn1001-053x.2006.10.032
Citation: CUI Yumin, FAN Shaohua, ZHANG Ying. Synthesis,characterization and photocatalytic activity of rare-earth doped TiO2 nanometer particles[J]. Chinese Journal of Engineering, 2006, 28(10): 956-958. doi: 10.13374/j.issn1001-053x.2006.10.032

Synthesis,characterization and photocatalytic activity of rare-earth doped TiO2 nanometer particles

doi: 10.13374/j.issn1001-053x.2006.10.032
  • Received Date: 2005-09-21
  • Rev Recd Date: 2006-03-28
  • Available Online: 2021-08-24
  • Pure and Ce-doped nano-TiO2 particles were prepared by a sol-gel process and characterized and explained by UV-Vis and XRD spectra. Being a model reaction, the photocatalytic degradation of methyl orange aqueous solution in the present of CeO2/TiO2 nano-particles was investigated with a high pressure mercury lamp as the light source. The results show that rare-earth Ce doped makes the reflective spectral characteristic of nano-TiO2 move to the visible region with a red shift to 500 nm, and is favorable to enhancing the absorption of visible and UV light of nano-TiO2. A few Ce4+ doped enter into the crystal lattices of TiO2, but a lot of Ce4+ doped disperse into TiO2 or cover onto TiO2 as the form of CeO2 with small size. It is indicated that rare-earth Ce doped increases its photocatalytic activity, and the optimum molar fraction of Ce in CeO2/TiO2 is 2.0%.

     

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