Rate constants of the reaction of the hydrated electron and hydroxyl radical with ozone in aqueous solution

verfasst von: D. Bahnemann, Edwin J. Hart
Abstract: Absolute rate constants for the reaction of the hydrated electron and hydroxyl radical with ozone in aqueous solution have been determined by using pulse radiolysis techniques. The rate constant, k(e_aq^- + O₃) = (3.60 ± 0.14) × 10¹⁰ dm³ mol^-1 s^-1, was measured in the pH range 4.1-6.05 by following the decay of e_aq^- at 600 nm. The rate constant k(OH• + O₃) = (3.02 ± 0.25) × 10⁹ dm³ mol^-1 s^-1, was obtained by a competition method at pH 6.7 with acetate ions as the OH• radical scavengers. The ozone concentration for both studies varied from 0.05 × 10^-3 to 0.50 × 10^-3 mol dm^-3.
Externe Organisation(en): Helmholtz-Zentrum Berlin für Materialien und Energie GmbH
Typ: Artikel
Journal: Journal of Physical Chemistry
Band: 86
Seiten: 252-255
Anzahl der Seiten: 4
ISSN: 0022-3654
Publikationsdatum: 1982
Publikationsstatus: Veröffentlicht
Peer-reviewed: Ja
ASJC Scopus Sachgebiete: Allgemeiner Maschinenbau, Physikalische und Theoretische Chemie
Elektronische Version(en): https://doi.org/10.1021/j100391a024 (Zugang: Unbekannt)