Analytical control of photocatalytic treatments: degradation of a sulfonated azo dye

Vincenzo Augugliaro, Giuseppe Marci', Leonardo Palmisano, Basso, Edmondo Pramauro, Baiocchi, Baiocchi, Alessandra Bianco Prevot, Pazzi

Risultato della ricerca: Articlepeer review

40 Citazioni (Scopus)

Abstract

The degradation of Methyl Orange (C14H14N 3SO3Na), chosen as a model sulfonated azo dye, was investigated in aqueous solutions containing suspended polycrystalline TiO 2 particles under irradiation with simulated sunlight. The dye disappearance and the formation of the mineralization end products were monitored; the formation of the main transient intermediates was also examined in detail. Particular attention was devoted to the identification and to the evolution of fragments retaining the chromophoric group. The comparison of data coming from various analytical techniques led to a possible reaction mechanism for the degradation process, giving insight into an aspect of the treatment which has not been considered in previous studies.
Lingua originaleEnglish
pagine (da-a)214-220
Numero di pagine7
RivistaAnalytical and Bioanalytical Chemistry
Volume378
Stato di pubblicazionePublished - 2004

All Science Journal Classification (ASJC) codes

  • Analytical Chemistry
  • Biochemistry

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