The results showed that for the photodegradation of RhB the optimal Co~(2+) dopant concentration is 0.02%,and that there is a synergetic effect of photocatalytic and photosensitization in RhB degradation.

• 结果表明；当Co2+的掺杂摩尔分数为0.；02%25时；光催化剂对RhB有最佳的光降解效果；而且在降解过程中存在光催化和光敏化的协同效应;