Photoredox chemistry of mercury ions in aqueous ethanol solutions

Ottó Horváth, Ildikó Mikó

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5 Citations (Scopus)


Mercury(II) is reduced to mercury(I) upon irradiation (λir = 254 nm) in air-saturated aqueous solution containing ethanol. The quantum yield of this reaction linearly depends on the alcohol concentration. The product of this process is Hg22+, which is photoactive too. Photostationary state with Hg(I)/Hg(II) ratio depending on the alcohol concentration can be reached in this system. Thus, photoassisted catalytic oxidation of alcohol to aldehyde takes place in such a state. Flash photolysis experiments confirmed that the reactions of Hg+ and Hg2+ formed in the primary steps of the photoinduced process are strongly affected by mercury(II), oxygen, and alcohol.

Original languageEnglish
Pages (from-to)33-38
Number of pages6
JournalJournal of Photochemistry and Photobiology A: Chemistry
Issue number1-3
Publication statusPublished - Nov 1999



  • Aqueous ethanol
  • Catalytic oxidation
  • Intermediates
  • Mercury ions
  • Photoredox

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Physics and Astronomy(all)

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