We have prepared TiO₂ anatase in powder form, studied their structure, Raman spectroscopic and optical properties in relation with the particle size. The average diameter of the particles was found by XRD pattern and SEM to be in the range of 1 μm-10 nm, depending on the synthesis condition. The effects of annealing temperature on the morphology, structural phase and particle size distribution of the particles were studied by scanning electron microscopy, X-ray diffraction, Raman spectroscopy and optical absorption techniques. The distinct changes of the measured results with respect to variations in particle size and synthesis parameter signify the promising application of the optical and Raman spectroscopy for comprehensive physical characterization of nanoparticles. © 2008 World Scientific Publishing Company.

Khang N.C., Van Minh N.

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