Ruthenium Oxide, a Suitable Redox Catalyst to Mediate Oxygen Production from Water

Authors

  • J. Kiwi Institut de Chimie Physique, Ecole Polytechnique Fédérale, Lausanne, Suisse
  • M. Grätzel Institut de Chimie Physique, Ecole Polytechnique Fédérale, Lausanne, Suisse

DOI:

https://doi.org/10.2533/chimia.1979.289

Abstract

RuO2 dispersions were found to catalyze in aqueous solution the one electron reduction of Ce4+ and Ru(bipy)33+ ions under simultaneous evolution of oxygen from water. The reaction is first order with respect to the concentration of oxidants and in the case of Ce4+ the specific rate is 0.3 h-1 at ambient temperature and 2 h-1 at 50 °C. The rate is drastically augmented when colloidal Ru dispersions are employed.

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Published

1979-08-31

Issue

Vol. 33 No. 8 (1979): Forschung/Research

Section

Kurze Mitteilungen

License

Copyright (c) 1979 J. Kiwi

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

How to Cite

[1]
J. Kiwi, M. Grätzel, Chimia 1979, 33, 289, DOI: 10.2533/chimia.1979.289.