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Photosensitised oxidation of a water pollutant using sulphonated porphyrin

Authors
  • Gmurek, Marta
  • Miller, Jacek
Type
Published Article
Journal
Chemical Papers
Publisher
Versita
Publication Date
Nov 23, 2011
Volume
66
Issue
2
Pages
120–128
Identifiers
DOI: 10.2478/s11696-011-0103-5
Source
De Gruyter
Keywords
License
Green

Abstract

Photodegradation of endocrine disrupting butylparaben (BP) in aerated aqueous solutions was studied using 4,4′,4″,4‴-(porphine-5,10,15,20-tetrayl)tetrakis(benzenesulphonic acid) (TPPS4), as a sensitiser. Influence of various parameters, such as initial sensitiser and BP concentration, pH of the reaction solution and oxygen content in the reaction solution, on the photosensitised oxidation was examined. It was found that the dominant pathway of BP degradation occurred in the reaction with molecular singlet oxygen 1O2, i.e. via photosensitised oxidation mechanism of type II. Kinetic parameters of the BP reaction with 1O2 were estimated.

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