Photocatalytic degradation of 4-chlorophenoxyacetic acid in the presence of an iron complex and hydrogen peroxide.

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388980%3A_____%2F02%3A50023019" target="_blank" >RIV/61388980:_____/02:50023019 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Photocatalytic degradation of 4-chlorophenoxyacetic acid in the presence of an iron complex and hydrogen peroxide.

Original language description

The photoinitiated transformation of 4-chlorophenoxyacetic acid (CPA) in aqueous solutions is described in detail. The photocatalytic system consists of CPA, hydrogen peroxide (no oxygen) and the complex iron(III) acetylacetonate Fe(acac)(3). Special attention was paid to the choice of irradiation wavelength in order to separate the contribution of the iron-photocatalyzed reaction from that of direct photoreactions. This was achieved by selecting a wavelength of 365 nm, which is absorbed exclusively bythe iron complex. We specified the conditions for effective photocatalytic degradation of CPA with high quantum yields which depend on the concentration of Fe(acac)(3). The reaction is primarily initiated by absorption of 365 nm radiation by Fe(acac)(3)followed by the photoreduction of Fe(III)(acac)(3) to Fe(II)(acac)(2) and subsequently by the Fenton reaction with hydrogen peroxide producing highly reactive hydroxyl radicals OH+. The main degradation intermediates are phenol and 4-chlo

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

CA - Inorganic chemistry

OECD FORD branch

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Project

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Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2002

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Photochemical and Photobiological Sciences

ISSN

1474-905X

e-ISSN

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Volume of the periodical

1

Issue of the periodical within the volume

8

Country of publishing house

CH - SWITZERLAND

Number of pages

4

Pages from-to

588-591

UT code for WoS article

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EID of the result in the Scopus database

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