Mailhot G, Sarakha M, Lavedrine B, Cáceres J, Malato S
Laboratoire de Photochimie Moléculaire et Macromoléculaire, Université Blaise Pascal, UMR CNRS 6505, France.
Chemosphere. 2002 Nov;49(6):525-32. doi: 10.1016/s0045-6535(02)00418-6.
The degradation of diethyl phthalate (DEP) photoinduced by Fe(III) in aqueous solutions has been investigated under solar irradiation in the compound parabolic collector reactor at Plataforma Solar de Almeria. Hydroxyl radicals *OH, responsible of the degradation, are formed via an intramolecular photoredox process in the excited state of Fe(III) aquacomplexes. The primary step of the reaction is mainly due to the attack of *OH radicals on the aromatic ring. For prolonged irradiations DEP and its photoproducts are completely mineralized due to the regeneration of the absorbing species and the continuous formation of *OH radicals that confers a catalytic aspect to the process. Consequently, the degradation photoinduced by Fe(III) could be an efficient method of DEP removal from water.
在阿尔梅里亚太阳能平台的复合抛物面集热器反应器中，研究了在太阳辐射下，水溶液中三价铁（Fe(III)）光诱导邻苯二甲酸二乙酯（DEP）的降解情况。负责降解的羟基自由基·OH是通过Fe(III)水络合物激发态下的分子内光氧化还原过程形成的。反应的第一步主要是由于·OH自由基对芳环的攻击。对于长时间照射，由于吸收物种的再生以及·OH自由基的持续形成，使得该过程具有催化作用，DEP及其光产物会完全矿化。因此，Fe(III)光诱导降解可能是一种从水中去除DEP的有效方法。
