摘要
采用纳米TiO_2光催化降解酸性嫩黄。当进水中嫩黄质量浓度为20mg·L^(-1)时,通过速率常数的比较得出反应的最佳条件为:TiO_2的投加质量浓度为600mg·L^(-1),pH值为3.56。当向UV/TiO_2体系中投加H_2O_2时,UV/TiO2体系与H2O2具有协同作用。向溶液中充氧也能提高酸性嫩黄的光催化降解速率,但效果不如投加H_2O_2明显。
The nano-TiO2 catalysts was used to degrade acid light yellow .When the initial concentration was 20 mg·L^-1, through the comparison of the reaction rate constants, studies showed that the optimum adding dosage of nano-TiO2 was 600 mg·L^-1 ,the best reaction pH value was 3.56. When adding H2O2 to the UV/TiO2 system, H2O2 and UV/TiO2 had the obvious coordination function. The reaction rate constant rised when adding O2 to the system, but lower than that of adding H2O2.
关键词
TIO2
光催化氧化
酸性嫩黄
动力学
TiO2
Photocatalytic oxidation
Acid light yellow
Kinetics
