Primary mechanism in the degradation of 4-octylphenol photoinduced by Fe(III) in water-acetonitrile solution

被引：34

作者：

Brand, N ^{[1
]}

Mailhot, G ^{[1
]}

Sarakha, M ^{[1
]}

Bolte, M ^{[1
]}

机构：

[1] Univ Blaise Pascal, UMR CNRS 6505, Photochim Mol & Macromol Lab, F-63177 Aubiere, France

来源：

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 2000年 / 135卷 / 2-3期

关键词：

iron(III); 4-octylphenol; photodegradation; hydroxyl radical;

D O I：

10.1016/S1010-6030(00)00299-9

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The degradation of 4-octylphenol (4-OP), a toxic and persistent product in the environment, photoinduced by Fe(III) has been investigated in water/acetonitrile solution (95/5 by volume). The initial rate of 4-OP degradation depends on the irradiation wavelength and on the initial concentration of Fe(OH)(2+), the monomeric species present in our experimental conditions. Several photoproducts have been identified among them 4-(1,1,3,3-tetramethylbutyl)pyrocatechol. The formation of octylphenoxyl radical was observed by fast kinetics as a result of the quenching reaction between Fe(III) species in the excited state and 4-OP. For longer irradiation times, regeneration of the monomeric species, Fe(OH)(2+), was suggested due to Fe(II) reoxidation by radicals. (C) 2000 Elsevier Science S.A. All rights reserved.

引用

页码：221 / 228

页数：8

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