Preparation of nanostructured CeO 2 coated TiO 2

Abstract

The synthesis of nanostructured TiO₂ and nanostructured CeO₂ coated TiO₂ has been investigated. On the basis of the synthesis of nano-TiO₂, nano-CeO₂ coated TiO₂ was prepared by use of sol- gel technology. X-ray diffraction, TEM, and high resolution electron microscopy were employed to analyse the characteristics and microstructures of the synthesised materials. The TEM analysis indicated that nano-CeO₂ coated TiO₂ is formed of agglomerated particles with an average size of 70 nm with the TiO₂ located at the centre surrounded by nanostructured CeO₂ polycrystals. Owing to the catalytic effect of nano-CeO₂, the oxygen sensitivity of nano-CeO₂ coated TiO₂ was better than that of pure nano-TiO₂.