Recycling experiment exhibit that the activity of photocatalyst decreased as the increasing of recycling times, after used for six times, the PAM degradation rate declined form 90.2% to 68%.

• 催化剂回收实验表明，催化剂的活性随着使用次数的增加而降低，使用六次后的催化活性由90.；2%25下降到了68%25。