Cleavage of Water by Visible‐Light Irradiation of Colloidal CdS Solutions; Inhibition of Photocorrosion by RuO2
- 1 November 1981
- journal article
- research article
- Published by Wiley in Angewandte Chemie International Edition in English
- Vol. 20 (11) , 987-988
- https://doi.org/10.1002/anie.198109871
Abstract
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.Keywords
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