This work was supported by the Schweizerischer Nationalfonds and by Ciba-Geigy. Basel.
Cleavage of Water by Visible-Light Irradiation of Colloidal CdS Solutions; Inhibition of Photocorrosion by RuO2†
Article first published online: 22 DEC 2003
Copyright © 1981 by Verlag Chemie, GmbH, Germany
Angewandte Chemie International Edition in English
Volume 20, Issue 11, pages 987–988, November 1981
How to Cite
Kalyanasundaram, K., Borgarello, E., Duonghong, D. and Grätzel, M. (1981), Cleavage of Water by Visible-Light Irradiation of Colloidal CdS Solutions; Inhibition of Photocorrosion by RuO2. Angew. Chem. Int. Ed. Engl., 20: 987–988. doi: 10.1002/anie.198109871
- Issue published online: 22 DEC 2003
- Article first published online: 22 DEC 2003
- Manuscript Received: 28 JAN 1981
The conversion of light into chemical fuels in photochemical devices equipped with semiconductor electrodes (e.g. of n-CdS) is associated with a serious problem: “holes” produced in the valence band of the semidonductor upon irradiation migrate to the surface where photocorrosion occurs. In mi-croheterogenous CdS systems this is remedied by a thin layer of RuO2. A CdS sol prepared in the presence of maleic anhydride/styrene copolymer has now been loaded with RuO2 and Pt; these CdS microelectrodes are surprisingly active catalysts for cleavage of H2O and H2S.