锰掺杂WO3-TiO2复合光催化剂的制备及其性能研究

溶胶-凝胶和浸渍相结合的方法制备锰掺杂WO3-TiO2复合光催化剂，RXD表征，考察WO3和Mn2+掺入量、焙烧温度、焙烧时间及催化剂用量对光催化降解甲基橙的影响。结果表明，500℃焙烧2h，掺杂量n（Mn2+）∶n（WO3）∶n（TiO2）＝0.8∶1∶100时，光催化活性最高，光催化降解甲基橙溶液，120min后，降解率达90%, 比单纯 TiO2的光催化活性提高81%。

Study on the preparation of Mn2+ doped WO3-TiO2 composite photocatalyst and its properties

Mn2+ doped WO3-TiO2 composite photocatalysts were prepared by sol-gel and impregnation method and then characterized by XRD. Experiments of photocatalytic degradation of methyl orange were carried out. The effects of amount WO3 and Mn2+doped, of calcinations temperature and time on these experiments are studied. The result shows that the performance of Mn2+-WO3-TiO2 is the best, when n（Mn2+）∶n（WO3）∶n（TiO2）＝0.8∶1.0∶100 and the claimed temperature is at 500 ℃. After 120 min, the degradation percentage of methyl orange is 90%, which is 81% higher than the activity of pure TiO2.