Sensitized Photoreduction of Nitrate in Homogeneous and Micellar Solutions

Arthur J. Frank, Michael Grätzel

Research output: Contribution to journalArticlepeer-review

26 Scopus Citations


Two organic sensitizers (S), N-methylphenothiazine and N,N,N′,N′-tetramethylbenzidine, were found to reduce nitrate ions after excitation to the triplet state. The photoreduction is irreversible and follows the sequence [formula omitted] For every triplet state produced, two donor molecules are oxidized and one nitrate ion is reduced to nitrite. The reactions were examined in homogeneous (water-ethanol) and micellar solutions. Rate constants for the individual processes were determined by a laser flash photolysis technique, and a detailed account of the energetics of this light energy conversion and storage system is given.

Original languageAmerican English
Pages (from-to)3834-3837
Number of pages4
JournalInorganic Chemistry
Issue number10
StatePublished - 1982

NREL Publication Number

  • ACNR/JA-233-4585


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