Abstract:

It is found that using sunlight as the light source, the photocatalytic activities of TiO₂- ZnO have beeninvestigated by the degradation of organic dye solution. The home-made sample’s photocatalytic degradation rateof organic dye and the elimination rate of COD_Cr can be more than 90% after 60 min. This shows that thecomposite material is more effective than pure TiO₂and the photocatalytic degradation reaction accords with thefirst grade dynamic equation.

Key words: composite photocatalyst material, visible-light, photocatalytic degradation, dye wastewater

摘要：

以太阳光为光源，TiO₂-ZnO复合材料为光催化剂，在太阳光照射下，以有机染料模拟工业废水为处理对象，研究了自制纳米复合材料TiO₂-ZnO的光催化活性，结果表明：在日光照射60min后，有机染料的降解率、COD_Cr去除率均>90%，复合材料TiO₂-ZnO光催化活性高于纯TiO₂的光催化活性，光催化反应符合一级动力学方程。

关键词: 复合光催化材料, 可见光光催化降解, 染料废水

CLC Number: 

• X703.1