超声协同TiO_2光催化降解酸性大红染料的研究

Study on photodegradation of acid scarlet dyestuff catalyzed by coupling system of titanium dioxide and ultrasonic

选取酸性大红染料为降解目标物,研究了在二氧化钛催化剂存在下的光催化氧化法与超声作用的协同反应,重点考察了超声辐射功率、初始溶液pH值、染料初始浓度、催化剂用量以及Fe3+等的添加对降解效率的影响。实验结果表明,溶液pH值为1.0,超声辐射功率400 W,染料初始浓度为40 mg/L,催化剂浓度为4 g/L,对酸性大红染料溶液降解75 m in,降解率可达90%以上。

The photodegradation of the acid scarlet dyestuff catalyzed by coupling system of titanium dioxide and ultrasonic was studied, the effect of ultrasonic concentration of dyestuff, amount of catalyst,etc, on the optimum catalytic condition was gained, and when pH = the original concentration of the dyestuff radiation power, pH value of initial solution, initial degradation efficiency were also investigated. The 1.0, the power of ultrasonic radiation was 400 W, solution was 40 mg/L and the catalyst was 4 g/L, the degradation efficiency could up to 90% after 75 min.