微波快速合成N/Ce-TiO_2复合光催化材料

Microwave Synthesis of N/Ce-TiO_2 Composite Photocatalyst

以四氯化钛为原料,采用微波技术探索N掺杂和N/Ce共掺杂TiO2粒子的快速合成工艺条件,以甲基橙为光降解模型污染物,在可见光下考察了相关工艺条件对TiO2复合光催化材料活性的影响。结果表明,微波功率为700 W条件下反应15min得到的催化材料活性最好。N/Ce共掺杂均匀实验结果表明,当n(N)∶n(Ti)=0.08,n(Ce)∶n(Ti)=0.1,在700W功率下反应15min得到的复合光催化材料活性要好于P25粉体。

With titanium tetrachloride as the raw material,N doped and N/Ce co-doped TiO2 particles were prepared by the microwave rapid synthesis technique.The preparation process conditions were investigated by the photodegradation methyl orange as model pollutants in visible light.The results showed the optimal process conditions： microwave power was 700W,microwave time was 15 mins.Under these conditions,the catalytic materials showed the excellent activity.The research showed that the composite photocatalyst activity of the materials which were prepared under the conditions of n（Ti）∶ n（Ce） equals 0.04,n（Ti）∶ n（Ce） equals 0.01,700 W and the reaction of 15 mins were more excellet than P25.