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CeO2包覆TiO2的XPS研究

XPS Study of TiO2 Coated with CeO2 Film

    摘要
  • 摘要: 利用光電子能譜XPS研究CeO2包覆TiO2后氧化還原性能.TEM照片證明實驗中制備出包覆材料;Ce3d譜線說明加入TiO2后CeO2非常容易還原,吸氧時它能夠再氧化.由于CeO2的晶體結構發生畸變,CeO2的活化能降低,有利于氧空位移動,所以CeO2容易還原氧化.

     

    Abstract: Redox capacity of CeO2 coating TiO2 is discussed.It is showed that CeO2 is easy to be reduced and can be re-oxidized while expoursing O2.Due to Ti4+ mixed in the CeO2 lattice, the activation energy decrease, which attributed to oxygen vacancy migration.

     

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