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Article
Photochemical coupling of iron redox reactions and transformation of low-molecular-weight organic matter
Journal of Physical Chemistry Letters
  • Zhaohui Wang, Chinese Academy of Sciences
  • Chuncheng Chen, Chinese Academy of Sciences
  • Wanhong Ma, Chinese Academy of Sciences
  • Jincai Zhao, Chinese Academy of Sciences
Document Type
Article
Publication Date
1-1-2012
Peer Reviewed
Peer-Reviewed
Abstract
The photoreactions between Fe(III)/Fe(II) and low-molecular-weight organic matter (LMWOM) under solar irradiation have significant implications for many biogeochemical cycles on the Earth and for the fates of environmental pollutants. In this Perspective, we focus on several fundamental aspects of the photochemical processes that couple the redox cycling of iron species and transformation of organic substrates. The primary photoprocesses (e.g., intramolecular electron transfer or photodissociation) are first highlighted by introducing the recently disputed observations on the photolysis of ferrioxalate complexes. The effects of LMWOM and its daughter radicals on the photochemical redox cycling of iron species are discussed with special attention given to the example of Fe–malonate complexes. These processes and mechanisms would provide us some refreshed understanding of environmental photochemistry of LMWOM and the iron species and would be helpful for our assessment of photochemical decontamination of organic pollutants.
Citation Information

Wang, Z, Chen, C, Ma, W & Zhao, J 2012, 'Photochemical coupling of iron redox reactions and transformation of low-molecular-weight organic matter', Journal of Physical Chemistry Letters, vol. 3, no. 15, pp. 2044-2051.

Published version available from:

http://dx.doi.org/10.1021/jz3005333