پديد آورندگان :
Mirkhani V. نويسنده , Tangestaninejad S. نويسنده , Moghadam M. نويسنده , Habibi M.H. نويسنده , Rostami-Vartooni A. نويسنده
چكيده لاتين :
In this paper, photocatalytic degradation of commercial textile azo dyes catalyzed by titanium dioxide and modified titanium
dioxide with Ag metal (1% w/w) in aqueous solution under irradiation with a 400 W high-pressure mercury lamp is reported. The
effect of various parameters such as irradiation time of UV light, amount of photocatalyst, flow rate of oxygen, pH and
temperature for the Ag-TiO2 photocatalyst were investigated. Kinetic investigations of photodegradation indicated that reactions
obey improved Langmuir-Hinshelwood model and pseudo-first-order law. The rate constant studies of photocatalytic degradation
reactions for Ag-TiO2 and TiO2 photocatalysts indicated that in all cases the rate constant of the reaction for Ag-TiO2 was higher
than that of TiO2.
