磷钨杂多酸银盐光催化降解甲基橙溶液的研究

Study on Photocatalytic Degradation of Methyl Orange with Silver Salts of Tungstophosphoric

以磷钨杂多酸银盐为光催化剂光催化降解甲基橙溶液,并用正交实验探讨了其最佳条件。实验结果表明,对于20mg/L的甲基橙溶液,当pH=2,催化剂的用量为0.5g/L,光催化降解时间为30min时,脱色率达到最大值93.7%。并且催化剂可以重复使用。最后,测定了该反应的化学动力学参数。

Methyl orange solution was degraded by using silver salts of tungstophosphoric as photocatalyst. The experiment condition was optimized by using perpendicular experiment design. The results showed that the maximum of discolored rate was 93.7% in 20 mg/L methyl orange solution, when the value of pH was 2, the quality of catalyst was 0.5g/L and the time of photocatalytic degradation was 30 minutes. Furthermore, the catalyst could be used repeatedly. Finally, the kinetic parameters of the reaction were determined