TiO_2投加量及其表面载银量对光催化降解Aro-clor1260的影响

The Effect of the Dosage of TiO_2 and Its Surface-loaded Silver on the Photocatalytic Degradation of Aroclor1260

在紫外灯照射下 ,催化剂TiO2 的投入量及其表面载银量对光催化降解Aroclor1 2 60有显著的影响 .但TiO2的投入量并不与Aroclor1 2 60的降解速率成正比关系 ,而是有一个最佳投入量 ,在本文的实验条件下 ,这个最佳值为 60mg( 3g/L) .TiO2 的表面载银量越多 ,Aroclor1 2 60的降解速率也越大 ,而且浓度相对较高的PCB单体化合物的降解速率大于浓度相对较低的PCB单体化合物的降解速率 .对于多数PCB单体化合物而言 ,TiO2

The dosage of TiO 2 and its surface loaded silver had notable effect on the photocatalytic degradation of Aroclor1260, under ultraviolet light. The dosage of TiO 2 had no proportion to the degradation rate of Aroclor1260, but had an optimal value, which was 3g/L under the experimental condition. The degradation rate of Aroclor1260 increased with the increasing of loading silver, and the PCBs congeners with higher concentration had higher degradation rate. The catalytic activity of TiO 2 increased with the amount of loading silver increasing.