سال انتشار: ۱۳۸۷
محل انتشار: دومین کنگره بین المللی علوم و فناوری نانو
تعداد صفحات: ۲
M Rashidzadeh – Research Institute of petroleum Industry-Catalyst Research Center
B Faridnia – Research Institute of petroleum Industry-Catalyst Research Center. P.O. Box:14665-1998, Tehran, Iran
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 .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 . 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 . 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.