Novel synthesis route to titanium oxides nanomaterials using soluble starch
Résumé
A novel and easy synthesis route to mesoporous nanocrystalline TiO2 samples using soluble starch as the structural agent and mainly titanium(IV) isopropoxide as the inorganic precursor was described. The effect of key parameters, including soluble starch removal process, the solvent nature and the type of titanium precursor were discussed. Using soluble starch in cyclohexane as non polar solvent, a surface area of 94 m2.g−1 associated with 23 nm crystallites size was obtained. TiO2 samples were characterized by means of N2 adsorption-desorption, X-ray Diffraction (XRD), TG-DTA, Scanning Electron Microscopy (SEM) and ATR-FTIR spectroscopy.