Abstract

Mehran Riazian¹ and Ali Ramzannezhad²

We report on the synthesis, morphology, chemically and structurally of composite nanostructure. In the present work, ternary reactive powders in the composite systems have been obtained using the sol-gel method, by the simultaneous gelation of all cations. Composite powders have been characterized by XRD, SEM, EDAX and FTIR. X-ray diffraction showed the formation of nano crystalline anatase, La2 O5, La2O7Ti2 , Co, Co3 O4 and CoO2H phases. The average crystallite size was calculated by using X-ray diffraction analysis. Scanning electron microscopy revealed that particles with spherical shapes decrease by increasing the calcinations temperatures and congestion of particles decreases with increasing the molar ratio of titanium precursor. EDX spectroscopy confirmed the composition of the ternary powders, which are formed during the gelation process. FTIR spectra showed that Co-O, La-O, Ti-O and Ti-O-La bonds are formed. The effects of chemical compositions and the strong process on the surface topography and the crystallization of anatase were studied.

Nanostructure; Poly-component; Composite and Sol-Gel method

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