Decomposition of nonafluoropentanoic acid by heteropolyacid photocatalyst H3PW12O40 in aqueous solution

Hisao Hori, Etsuko Hayakawa, Kazuhide Koike, Hisahiro Einaga, Takashi Ibusuki

Research output: Contribution to journalArticlepeer-review

41 Citations (Scopus)


Nonafluoropentanoic acid (C4F9COOH; NFPA), which is a typical perfluorinated acid, was decomposed to F- and CO 2 with a water-soluble tungstic heteropolyacid photocatalyst, H 3PW12O40. The catalytic reaction proceeded in water at room temperature under UV-Vis irradiation in the presence of oxygen. The reaction system produced no trace of environmentally undesirable species, such as CF4 and CF3H. In addition to F- ions, a small amount of a one-CF2-unit-shortened species, heptafluorobutyric acid (C3F7COOH; HFBA), was formed. The reaction mechanism involves precomplexation between [PW12O 40]3- and NFPA and subsequent redox reactions.

Original languageEnglish
Pages (from-to)35-41
Number of pages7
JournalJournal of Molecular Catalysis A: Chemical
Issue number1-2
Publication statusPublished - Mar 15 2004
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Process Chemistry and Technology
  • Physical and Theoretical Chemistry

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