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Published July 1989 | public
Journal Article

Environmental photochemistry: Is iron oxide (hematite) an active photocatalyst? A comparative study: α-Fe_2O_3, ZnO, TiO_2

Abstract

The photocatalytic activity of α-Fe2_O_3 colloids is compared to the activities of colloids and suspensions of ZnO and TiO_2. The formation of H_2O_2 is investigated and the oxidation of organic molecules is studied with high sensitivity. While ZnO and TiO_2 are found to be quite active photocatalysts in the formation of hydrogen peroxide and in the degradation of chlorinated hydrocarbon molecules, only negligible photocatalytic activity is found for α-Fe_2O_3. Upper limits of quantum yields for several photoreactions of α-Fe_2O_3 are given.

Additional Information

© 1989 Elsevier B.V. Received December 6, 1988. We wish to thank Professor Rudi van Eldik for communicating his recent work to us prior to publication [28].

Additional details

Created:
August 19, 2023
Modified:
October 23, 2023