【摘要】 酸性红3R染料是一种常见的工业染料,在紫外灯(20 W)辐射下利用二氧化钛可以将其光催化降解为水、二氧化碳和其它一些小分子无机化合物。以混晶结构的纳米二氧化钛为催化剂,在紫外灯辐照下进行了光降解实验,结果表明,该反应为一级反应,速率常数为0.003 15 m in-1。同时,讨论了反应过程中的pH值,氧化钛的用量对催化反应的影响,并证实有机染料在180 m in内脱色率超过80%。更多还原

【Abstract】 Acid red 3R(AR3R),commonly used as a textile dye,could be photocatalytically degraded using TiO2 suspensions irradiated by a UV-clamp(20 W),and the mineralization products may be some inorganic molecules such as water,carbon dioxide.In this paper,photo-degradation experiments were preformed by UV lamp irradiation,and some operation parameters(catalyst amount and pH value) were discussed.The results proved that the degradation reaction was first-order reaction,the rate constant was 0.003 15 min-1,and degradation rate was beyond 80% in 180 min.更多还原