Mechanism of the hydroxide ion initiated decomposition of ozone in aqueous solution

Research output: Contribution to journal › Article › Research › peer review

Authors

  • L. Forni
  • D. Bahnemann
  • Edwin J. Hart

External Research Organisations

  • Helmholtz-Zentrum Berlin für Materialien und Energie (HZB)
  • Brunel University
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Details

Original languageEnglish
Pages (from-to)255-259
Number of pages5
JournalJournal of Physical Chemistry
Volume86
Issue number2
Publication statusPublished - 1982
Externally publishedYes

Abstract

Stopped-flow experiments are reported on the OH -catalyzed chain decomposition of ozone in the pH range 11-13. O3-• has been identified as a product by its 430-nm absorption band. Acetate and carbonate ions inhibit this reaction. In the carbonate-inhibited reaction, the radical anion CO3-• has been identified by its 600-nm absorption band. In this case an apparent second-order rate constant of 115 ± 40 dm3 mol-1 s-1 has been obtained. Evidence is provided to support the reaction OH- + O3 → HO2- + O2 as the primary step. On this basis, k(OH- + O3) equals 48 ± 12 dm3 mol-1 s-1. Some aspects of the overall reaction are discussed.

ASJC Scopus subject areas

Cite this

Mechanism of the hydroxide ion initiated decomposition of ozone in aqueous solution. / Forni, L.; Bahnemann, D.; Hart, Edwin J.
In: Journal of Physical Chemistry, Vol. 86, No. 2, 1982, p. 255-259.

Research output: Contribution to journal › Article › Research › peer review

Forni, L, Bahnemann, D & Hart, EJ 1982, 'Mechanism of the hydroxide ion initiated decomposition of ozone in aqueous solution', Journal of Physical Chemistry, vol. 86, no. 2, pp. 255-259. https://doi.org/10.1021/j100391a025
Forni, L., Bahnemann, D., & Hart, E. J. (1982). Mechanism of the hydroxide ion initiated decomposition of ozone in aqueous solution. Journal of Physical Chemistry, 86(2), 255-259. https://doi.org/10.1021/j100391a025
Forni L, Bahnemann D, Hart EJ. Mechanism of the hydroxide ion initiated decomposition of ozone in aqueous solution. Journal of Physical Chemistry. 1982;86(2):255-259. doi: 10.1021/j100391a025
Forni, L. ; Bahnemann, D. ; Hart, Edwin J. / Mechanism of the hydroxide ion initiated decomposition of ozone in aqueous solution. In: Journal of Physical Chemistry. 1982 ; Vol. 86, No. 2. pp. 255-259.
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AU - Forni, L.

AU - Bahnemann, D.

AU - Hart, Edwin J.

N1 - Copyright: Copyright 2017 Elsevier B.V., All rights reserved.

PY - 1982

Y1 - 1982

N2 - Stopped-flow experiments are reported on the OH -catalyzed chain decomposition of ozone in the pH range 11-13. O3-• has been identified as a product by its 430-nm absorption band. Acetate and carbonate ions inhibit this reaction. In the carbonate-inhibited reaction, the radical anion CO3-• has been identified by its 600-nm absorption band. In this case an apparent second-order rate constant of 115 ± 40 dm3 mol-1 s-1 has been obtained. Evidence is provided to support the reaction OH- + O3 → HO2- + O2 as the primary step. On this basis, k(OH- + O3) equals 48 ± 12 dm3 mol-1 s-1. Some aspects of the overall reaction are discussed.

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