摘要：

通过凝胶-溶胶法制备了Bi₂O₃-MgO复合材料,用可见光降解罗丹明B,考察了n(Bi):n(Mg)、反应温度、活化时间以及煅烧温度等因素对Bi₂O₃-MgO光催化性能的影响,并得出最佳制备条件:n(Bi):n(Mg)=2,反应温度90℃、活化时间15 h,煅烧温度500℃。

关键词: Bi₂O₃-MgO, 复合材料, 罗丹明B, 光催化

Abstract:

Bi₂O₃-MgO composite material has been prepared by sol-gel method. The effects of the factors, including n(Bi):n(Mg),reaction temperature,activation time,calcination temperature,etc.,on the photocatalytic activity of Bi₂O₃-MgO are investigated by the visible light degradation of Rhodamine B. The optimal preparation conditions obtained are as follows:n(Bi):n(Mg) is 2,reaction temperature 90℃,activation time 15 h and calcination tempera-ture 500℃.

Key words: Bi₂O₃-MgO, composite material, Rhodamine B, photocatalysis

中图分类号: 

• X703