Synthesis of bioactive materials based on undoped/doped TiO(2) and their nanocrystals with alpha- / beta -cyclodextrins

Bioactive compounds encapsulating for controlled protection and release is an actuality field, with involved in supra-molecular chemistry, biochemistry, drugs products, cosmetics and food-processing fields. The controlled protection and release of bio-molecules represent a large and actuality field, with application, especially in drugs, cosmetics and food-processing industries. Cyclodextrins were the first studying compounds regarding to complexing behavior and catalytic properties, in order to copy the enzymes. In this paper it was achieved the synthesis of titanium dioxide undoped and doped with metallic ions, silver and iron, through sol-gel method, and also their complexation with alpha- / beta-cyclodextrins through co-crystallization method. The obtained nanomaterials were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDAX), thermogravimetry (TG) and Fourier transform infrared spectroscopy (FT-IR).