Synthesis of TiO2/SnO2 nanoparticles prepared by the sol–gel route under different chemical and physical condition with TiCl4 as a precursor

In the present study, TiO2/SnO2 nanocomposites were prepared by the sol–gel method under differentchemical and physical conditions (with a different mol ratio of SnO2). The morphology properties of samples surfacewere studied with scanning electron microscopy (SEM). Moreover, the structural properties (the kinds of structuralphases, crystal lattice strains and transition point) and the size of nanocrystallites were investigated using x-raydiffraction (XRD) spectra. The XRD analysis indicated that at low calcination temperature the anatase structure of TiO2was formed, and with increasing the calcination temperature of synthesized nanocomposites the anatase phase TiO2was changed to rutile structure. The important consequence of XRD analysis is that SnO2 impurity added to TiO2causes a transition point shift of anatase phase to rutile phase.

Keywords:

nanocomposites , TiO2/SnO2 , sol-gel , anatase , rutile