The objective of the thesis is to produce two types of phase-phase Nano TiO2 materials Nitrogen inclusion on aluminum oxide metal (N-TiO2 / Al2O3) applied as a filter for air purifiers and nanocomposit hydroxyl apatite coated on nitrogen doped TiO2 (HA / N-TiO2) on the wall to treat toluene, Bacteria and fungi contaminate the air. | Abstract of Doctoral thesis: Research on the synthesis and characterization of structure and properties of TiO2-based Nanocomposite for the treatment of some pollutants in air enviroment