Hydrothermal Synthesis Of TiO2 Nanoparticles and It’s Photocatalytic Activity

Among three different forms of titania polymorphs, anatase, brookite and rutile, anatse-TiO2 has attracted more attention for it’s vital use as photocatalyst and catalyst support in industrial processes [1].On the other hand the Photocatalytic activity and also catalytic properties of titania varies depending on it’s crystallinity, particle size, crystal phase, surface area and the method of preparation [2]. Hydrothermal synthesis is a promising method to obtain nanocrystalline titania particles .The hydrothermal process in which the chemical reaction take place under auto-generated pressure upon heating is sufficient to achieve the crystalline phase at relatively low temperature. The process is take place in a closed system then it is a environmentally friendly process [3]. In this study to obtain a titania photocatalyst with high performance and also high thermal stability a special type of hydrothermal process was chosen. The Photocatalytic activity, thermal stability and degradation kinetics on a model dye, Fluorescein, of synthesized sample as well as commercial sample were investigated.