Photocatalytic Efficiency of TiO2/Fe2O3 and TiO2/WO3 Nanocomposites

The photocatalytic proprieties of TiO2/FeO3 and TiO2/WO3 nanocomposites have been investigated using methylene blue as a pollutant. We propose non-conventional approach for material preparation, i.e., the Doctor Blade technique, which is an easy inexpensive method coating materials. Several drawbacks related to use powders can be alleviated by solid substrates, this deposition allows us take advantage high surface area nanoparticles, avoiding dispersion in solution. possibility with photoactive molecule leads photocatalysis real world. structural, optical, textural characterizations these materials were carried out UV-vis. Diffuse Reflectance Spectroscopy (DRS) was used calculate energy band gap Kubelka-Munk method, N2 absorption-desorption measurements study exposed (SBET). activity evaluated containing 0.1/0.2/0.3/0.5 wt.% Fe2O3 or WO3 both WO3. An enhancement about 60% achieved adding 0.2% wt. after 2 h exposure UV light. TiO2@Fe2O3 TiO2@WO3/Fe2O3 mixtures showed same behavior TiO2@WO3 mixture. Therefore, photoactivity photocatalysts not oxide itself. These results are due structure In fact, there important matching among TiO2, WO3, Fe2O3, gives substantial improvement photodegradation. pH neutral at beginning end experiment, consistent well-known photodegradation pathway blue.