摘要：

以钛酸丁酯和乙酸锰为前驱物,采用溶胶-凝胶(sol-gel)法成功地制备了纳米Mn₃O₃/TiO₃₂粉体,利用XRD、TEM和TG-DSC对粉体进行了表征。以甲基橙为模型化合物,研究了热处理温度、锰的含量、凝胶pH以及溶液的pH、甲基橙浓度、太阳光照时间和光源等对Mn₂O₃/TiO₂光催化活性的影响。

关键词: 二氧化钛, 锰(Ⅲ), 太阳光催化, 甲基橙, 溶胶-凝胶法

Abstract:

Using Ti (OC₄H₉) and Mn (CH₃COO)₂·4H₂O as precursors, the nano-sized Mn₂O₃ /TiO₂ photo-catalysts powder has been prepared by sol-gel method. XRD, TEM and TG-DSC are used for characterizing the powder.Take methyl orange as model compound, the effects of the heat treatment temperature, manganese content, pH values of the gel and sol, concentration of methyl orange, illuminating time, light sources, etc. on the photocatalytic activity of Mn₂O₃/TiO₂ are investigated.

Key words: titanium dioxide, manganese( Ⅲ) , solar photo-catalysis, methyl orange, sol-gel method

中图分类号: 

• X703

• O643.3