TiO2 Nanocrystals by Sol-Gel Method
Cite the paper
D.V. Sridevi, V. Ramesh, T. Sakthivel, K.Geetha, V. Ratchagar, K. Jagannathan, K. Rajarajan, K. Ramachadran (2017). Synthesis, Structural and Optical Properties of Co Doped TiO2 Nanocrystals by Sol-Gel Method. Mechanics, Materials Science & Engineering, Vol 9. doi:10.2412/mmse.99.9.726
Authors: D.V. Sridevi, V. Ramesh, T. Sakthivel, K.Geetha, V. Ratchagar, K. Jagannathan, K. Rajarajan, K. Ramachadran
ABSTRACT. A TiO2 nanoparticle doped with cobalt was synthesized by sol-gel technique employed at room temperature with appropriate reactants. In the present case, we used titanium tetra isoprotoxide (TTIP) and 2–propanol as a common starting material and the obtained products were calcined at 450˚ C. From the Powder XRD data the particle size was calculated by Scherrer method. The FE-SEM analysis shows the morphology of cobalt doped TiO2 nanoparticles. The various functional groups of the samples were identified by Fourier transform spectroscopy (FT-IR). The UV-Vis-NIR spectra of cobalt doped TiO2 material shows two absorption peaks in the visible region related to d-d transitions of Co2+ in TiO2 lattice. Compared to un-doped TiO2 nanoparticles, the cobalt doped material show a red shift in the band gap.
Keywords: nanoparticles, PXRD, sol-gel method, UV-Vis studies, FT-IR, FE-SEM, EDAX
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