3种染料化合物在UV-TiO2/H2O2和UV-TiO2体系中的光催化降解研究

采用自制的TiO2膜和平板式固定床型光催化氧化反应装置,对甲基橙、茜素红和罗丹明B 3种含有不同生色基团的染料化合物进行了TiO2光催化氧化降解研究,通过对照测定降解过程中吸光度、电导率、pH的变化,分析了在加入和不加入H2O22种情况下降解过程的异同,比较了3种染料化合物脱色的难易程度,揭示了降解产物中无机离子的变化规律及某些可能的产物类型.

Study on photocatalytic degradation of three dyes in systems of UV-TiO2/H2O2 and UV-TiO2

By using TiO 2 fixed film and shallow basin photocatalytic reactor, methyl orange, alizarin red and rhodamine B with different chromopharic groups were treated. Absorbance,conductivity and pH were employed to study the difference of photodegradation process of three dyes in systems of UV TiO 2 and UV TiO 2 / H 2O 2. The decolourtion degrees of the dyes were compared and the changes of inorganic ion and some degradation products in their systems were showned.