TiO_2光催化降解紫丁香醇的定量分析

Quantitative Analysis of Photocatalytic Degradation of Syringe Lignin by Nanometer TiO_2

在圆柱型光催化反应器中,以UV-A light(功率11W,波长253.7,nm)作为光源,对含有紫丁香醇模型物的木素类有机废水进行光催化降解实验,研究讨论了悬浮体系中TiO2光催化降解紫丁香醇木素的反应特性.实验结果表明,紫丁香醇结构中部分双甲氧基在光照的条件下,与苯环发生了断裂,生成了具有单甲氧基结构的中间体——愈创木酚和一些其他低分子有机物;通过联立公式对降解过程中的紫丁香醇和愈创木酚的浓度进行定量分析.

In cylindrical photocatalytic reactort,he researches were made on the characters of the syringe lignin degradation obtained from organic wastewateri,n which the suspended TiO2 was used as activated photocatalyst and a 11,W UV disinfec-tion lamp（λ=253.7,nm）as light source.The experimental results showed that the double methoxyl of the syringe partly broke and became single methoxy structure like guaiacol and some other low molecular organic substance under illuminationcondition.The concentration of the syringe and guaiacol in the degradation were quantitatively analyzed by the simultaneous formula.