【摘要】 在紫外光照射下,以TiO2为催化剂,研究邻苯二甲酸二丁酯(DBP)、邻苯二甲酸二环己酯(DCHP)和邻苯二甲酸丁基苄基酯(BBP)水溶液的光催化降解规律,不同结构特征的酞酸酯在降解过程中pH值均表现为先升高,再降低的趋势.降解为表观一级反应.采用色质联用技术(GC-MS)分别对上述物质降解过程中生成的中间体进行分析,提出了可能的降解机理.更多还原

【Abstract】 The photocatalytic degradation rules of phthalic acid esters（PAE）such as DBP（dibutyl phthalate）,DCHP（dicyclohexyl phthalate） and BBP（butyl benzyl phthalate） were studied in aqueous TiO₂ dispersions under UV irradiation.The pH shows ascending firstly then falling in every photocatalytic reaction system.The experiment shows that the photocatalytic degradation of PAE was pseudo first-order reaction kinetics.The（intermediates） of degradation were analyzed by GCMS and the possible degradation mechanism was proposed.更多还原