Preparation, structural and morphological studies of Ni doped titania nanoparticles

•No change in anatase phase of bare and Ni doped TiO2 was predicted even after calcinations at 500 °C.•No alkoxy groups were identified in FTIR spectra.•The peaks which were existing in bare TiO2, were blue shifted as result of doping.•Particles are almost in spherical shape with uniform size distribution.•TEM image that the particle size is 8–16 nm, which are in good agreement with the XRD results.

TiO2 nanoparticles doped with different weight percentages (4%, 8%, 12% and 16%) of nickel contents were prepared by a modified sol–gel method using Titanium tetra iso propoxide and nickel nitrate as precursors and 2-propanol as a solvent. X-ray diffraction studies show that the as prepared and annealed products show anatase structure with average particle sizes running between of 8 and 16 nm. FTIR results demonstrate the presence of strong chemical bonding at the interface of TiO2 nanoparticles. The optical properties of bare and doped samples were carried out using UV-DRS and photoluminescence measurements. The surface morphology and the element constitution of the nickel doped TiO2 nanoparticles were studied by scanning electron microscope attached with energy dispersive X-ray spectrometer arrangement. The non linear optical properties of the products were confirmed by Kurtz second harmonic generation (SHG) test and the output power generated by the nanoparticle was compared with that of potassium di hydrogen phosphate (KDP).

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