Synthesis of TiO2/SnO2 core shell nanocomposite via sol-gel method

The particles of TiO2 core/ SnO2 shell nanocomposite were prepared by hydrolysis of SnCl4.5H2O in the presence of titania nanoparticle after drying and calcinations treatments. TiO2 particle were produced from titanium isopropoxide sol by hydrothermal processing. X-ray diffraction (XRD), Fourier transformed infrared (FTIR), and transmission electron microscopy (TEM) were used to characterize the TiO2/ SnO2 core shell nanocomposites. The obtained results from XRD show that the SnO2 nanoparticles coated on TiO2 yields diffraction peaks correspond to the crystalline SnO2 phase. Also, TEM results show that the nanocomposite particles have a spherical morphology and a narrow size distribution. The thickness of SnO2 shell on the surface of TiO2 particles were about 8 nm. Moreover, the results obtained from EDX analysis show that the core-shell structured nanocomposites have crystalline structure.