Structural,optical and morphological analyses of pristine titanium di-oxide nanoparticles-Synthesized via sol-gel route

摘要

Pure titanium di-oxide nanoparticles (TiO_2) were synthesized by sol-gel technique at room temperature with appropriate reactants.The synthesis of anatase phase TiO_2 nanoparticles was achieved by tetraisopropyl orthotitanate and 2-propanol as common starting materials and the product was annealed at 450℃ for 4 h.The synthesized product was characterized by X-ray diffraction analysis (XRD),Fourier transform infrared spectroscopy (FTIR),UV-VIS-Diffuse reflectance spectroscopy (DRS),Photoluminescence (PL) spectroscopy and Scanning electron microscopy (SEM) with Energy dispersive X-ray (EDX) analysis.XRD pattern confirmed the crystalline nature and tetragonal structure of synthesized composition.Average grain size was determined from X-ray line broadening,using the Debye-Scherrer relation.The functional groups present in the sample were identified by FTIR spectroscopy.Diffuse reflectance measurement indicated an absorption band edge on UV-region.The allowed direct and indirect band gap energies,as well as the crystallite size of pure TiO_2 nanoparticles are calculated from DRS analysis.The microstructure and elemental identification were done by SEM with EDX analysis.