光催化氧化降解聚乙二醇的机理研究

Mechanism Study on Photocatalytic Degradation of Polyethylene Glycol

以纳米TiO2为光催化剂,对聚乙二醇水溶液进行光催化降解实验.气相色谱、热重、红外、核磁共振等测定结果表明降解过程有低分子量聚乙二醇和甲酸酯及其他低分子量酯等中间产物生成,最终矿化为CO2和H2O.

Nanoscale TiO2 is used as the photocatalyst in the degradation process of polyethylene glycol （PEG）. The intermediates and products have been characterized by GC, TG, FT-IR, NMR. They are low molecular weight PEG, esters and other intermediates during degradation reaction. The PEG was finally mineralized to CO2 and H2I.