The role of copper(II) ions in the photocatalytic oxidation of 1,4-dioxane

S.W. Lam, M. Hermawan, Heather Coleman, K. Fisher, R. Amal

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

The effect of Cu2+ on the photocatalytic oxidation of 1,4-dioxane was evaluated. The addition of Cu2+ led to an enhancing effect in the photocatalytic degradation and mineralisation of 1,4-dioxane for both pH 3 and 5. This positive role of Cu2+ was attributed to its involvement in the ligand-to-metal charge transfer (LMCT) process, where Cu2+ formed complexes with 1,4-dioxane and/or its intermediate products, providing an alternative routes for the oxidation reaction via photoredox mechanism. The supporting evidence to the complexes formation has been confirmed using an electron spin resonance (ESR) spectroscopy and the semi-empirical PM3 calculation.
Original languageEnglish
Pages (from-to)152-159
JournalJournal of Molecular Catalysis A: Chemical
Volume278
Issue number1-2
Early online date10 Sep 2007
DOIs
Publication statusE-pub ahead of print - 10 Sep 2007

Keywords

  • 1
  • 4-Dioxane
  • Ethylene glycol diformate
  • Photocatalysis
  • Copper(II) ions

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