The feasibility of photocatalytic degradation of X 3B azo dye by TiO 2/beads photocatalyst was studied. The effects of parameters such as the amount of TiO 2/beads, airflow, as well as the concentrations of H ...The feasibility of photocatalytic degradation of X 3B azo dye by TiO 2/beads photocatalyst was studied. The effects of parameters such as the amount of TiO 2/beads, airflow, as well as the concentrations of H 2O 2, Fe 3+ , Mg 2+ and Na + on the photocatalytic degradation of X 3B azo dye were also studied. The results showed that 25 mg/dm 3 X 3B azo dye can be photocatalytically degraded completely by 30 min illumination with a 375W medium pressure mercury lamp. Adding a small amount of H 2O 2 or Fe 3+ , the efficiencies of photocatalytic degradation of X 3B azo dye were increased rapidly. The mechanisms of the reaction and the role of the additives were also investigated. After 120 hours TiO 2/beads showed no significant loss of the photocatalytic activity.展开更多
文摘The feasibility of photocatalytic degradation of X 3B azo dye by TiO 2/beads photocatalyst was studied. The effects of parameters such as the amount of TiO 2/beads, airflow, as well as the concentrations of H 2O 2, Fe 3+ , Mg 2+ and Na + on the photocatalytic degradation of X 3B azo dye were also studied. The results showed that 25 mg/dm 3 X 3B azo dye can be photocatalytically degraded completely by 30 min illumination with a 375W medium pressure mercury lamp. Adding a small amount of H 2O 2 or Fe 3+ , the efficiencies of photocatalytic degradation of X 3B azo dye were increased rapidly. The mechanisms of the reaction and the role of the additives were also investigated. After 120 hours TiO 2/beads showed no significant loss of the photocatalytic activity.
