Effect of physical properties upon hydrothermal treatments on titanium dioxide films

Abstract

Titanium dioxide is used extensively as semiconductor since more than five decades. Hydrothermal method is one the method which widely used for the synthesis of TiO2 have been widely developed. The effect of hydrothermal temperatures on the titanium dioxide films is investigated. The TiO2 films were prepared by hydrothermally layering a mixture of aquadest, HCl and titanium(IV) isopropoxide over indium tin oxide glass, at 110, 150, 180 and 200 ºC for 10 h. The film on the surface of indium tin oxide glass was calcined at 500 ºC and characterized by X-ray diffraction, UV-visible spectroscopy and scanning electron microscopy-energy dispersive X-ray (SEM-EDX) methods. The study shows that the TiO2 has a spherical morphology with the size between 0.5 to 2 µm. The TiO2 consits of rutile and anatase with the particle size ranging from 16.97 to 24.10 nm and from 18.09 to 26.75 nm, respectively. The band gap energy of TiO2 is between 3.17 to 3.48 eV.