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Titanium dioxides (TiO2) have been widely studied, due to its interesting general properties in a wide range of fields including catalysis, photocatalysis, and in civil as nano-paint (self-cleaning) that affect the quality of life. Therefore, TiO2 and doped with noble metal are good candidates in the performance these applications. The fascinating physical and chemical features of TiO2 depend on the crystal phase, size and shape of particles. Here, anatase TiO6 connected octahedra by sharing corners and has a tetragonal structure with a unit cell of a = 0.54 nm and b = 0.95 nm. The rutile form has a tetragonal structure (d = 0.30 nm) with octagonal edges and its unit cells (c = 0.46 nm). This abstract explains some applications and theoretical concepts of nanostructure of TiO2 nanoparticles. Also, it demonstrates electrical, optical and morphological properties which make TiO2 preferable for environmental applications [1-3].
As a result of calculations (BR=1.27; RF=1.98; χ2=2.68), the structure of the initial TiO2 sample was single-phase, tetragonal, and is described by the space group P 42/mnm). But X-ray diffraction data of TiO2 after gamma irradiation shows that the lattice parameters increased: a = 4.5946 Å, b = 4.5946 Å, c = 2.9609 Å and tetragonal showed that it has a structure (special group P42/mnm), unit cell as a result of calculations of the irradiated TiO2 sample (BR=1,09; RF=2,67; χ2=1,77). The Raman line at 147.5 cm−1 is very strong compared indicating that the TiO2 nano powders possess a certain degree of long-range order. This may be due to the reconstruction of O–Ti–O bonds, hence, contributing to the reduction in the disordered sites in TiO2 nano powder samples. Therefore, the solution to higher photocatalytic efficiency has been sought for some time [4-7].
