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Heterogeneous Photocatalysis by Metal Sulfide Semiconductors

  • H. Kisch
  • W. Hetterich
  • G. Twardzik
Conference paper

Abstract

Metallized semiconductor powders like titanium dioxide and cadmium sulfide may photocatalyze the reduction of water and reactions of organic compounds. In the latter case no new materials were obtained (Fox 1983) except in the dehydrodimerization of cyclic ethers by photoexcited zinc sulfide (Bücheler 1982; Zeug 1985; Yanagida 1985). This reaction affords from 2,5-dihydrofuran (2,5-DHF) and 2,3-dihydrofuran (2,3-DHF) the hitherto unknown compounds \(\underset{=}1\) - \(\underset{=}3\) in preparative amounts, and from THF the 2,2’-bitetrahydrofuryl (\(\underset{=}4\)) without traces of the 2,3’-isomer. Their formation is coupled to hydrogen evolution from water which occurs with- out a noble metal catalyst. In the following we report how the reaction of 2,5-DHF depends on the method of catalyst preparation, on the concentration of water, 2,5-DHF and zinc sulfide, and on the substitution of zinc sulfide by cadmium sulfide or homogeneous solutions of ZnS/CdS. Competition and inhibition experiments give some basic insights into the nature of interfacial electron transfer processes.

Keywords

Photocatalytic Activity Zinc Oxide Metal Sulfide Zinc Sulfide Cadmium Sulfide 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. Bücheler J, Zeug N, Kisch H (1982) Zinksulfid als Katalysator der heterogenen Photoreduktion von Wasser. Angew. Chem. 94: 792CrossRefGoogle Scholar
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Copyright information

© Springer-Verlag Berlin · Heidelberg 1987

Authors and Affiliations

  • H. Kisch
    • 1
  • W. Hetterich
    • 1
  • G. Twardzik
    • 1
  1. 1.Institut für Anorganische Chemie der Universität Erlangen-NürnbergErlangenGermany

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