Photodegradation of 1-nitropyrene in solution and in the adsorbed state

Alexander Muck, Pavel Kubát, Anabela Oliveira, Luis Filipe Vieira Ferreira, Josef Cvačka, Svatopluk Civiš, Zdeněk Zelinger, Jiří Barek, Jiří Zima

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The photodegradation of the 1-nitropyrene (NPy) has been studied using conventional (Xe and medium pressure Hg lamps) and laser sources (XeCl excimer and Nd-YAG UV). Low energy monochromatic light sources were used to study the early stages of degradation (up to 50% conversion). The medium pressure Hg lamp was used for longer periods of irradiation (up to 6h) and for greater degradation of NPy. The results of our work confirm that degradation occurs by radical mechanism. Aromatic hydroxymethyl, methoxy, hydroxy and nitroso derivatives of pyrene (Py) are created by low energy UV irradiation. After a massive UV irradiation, the Py aromatic system is destroyed and more polar low-molecular compounds are generated. The photochemical method described in this paper, based on irradiation by UV lamp, is therefore, suitable for degradation of fused benzene ring(s) and thus should also be effective for degradation of other nitrated polycyclic aromatic compounds.

Original languageEnglish
Pages (from-to)175-184
Number of pages10
JournalJournal of Hazardous Materials
Volume95
Issue number1-2
DOIs
Publication statusPublished - 11 Nov 2002
Externally publishedYes

Keywords

  • 1-Nitropyrene
  • HPLC
  • Mass spectroscopy
  • Photolysis

ASJC Scopus subject areas

  • Environmental Engineering
  • Environmental Chemistry
  • Waste Management and Disposal
  • Pollution
  • Health, Toxicology and Mutagenesis

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  • Cite this

    Muck, A., Kubát, P., Oliveira, A., Ferreira, L. F. V., Cvačka, J., Civiš, S., Zelinger, Z., Barek, J., & Zima, J. (2002). Photodegradation of 1-nitropyrene in solution and in the adsorbed state. Journal of Hazardous Materials, 95(1-2), 175-184. https://doi.org/10.1016/S0304-3894(02)00120-6