Oxidative Energy Storage Ability of a TiO2−Ni(OH)2 Bilayer Photocatalyst
Authors:
- 3 November 2005
- journal article
- research article
- Published by American Chemical Society (ACS) in Langmuir
- Vol. 21 (26) , 12357-12361
Abstract
A TiO2-coated indium tin oxide electrode was further coated with Ni(OH)2 by electrodeposition to obtain a TiO2−Ni(OH)2 bilayer film. Upon irradiation of the bilayer film with UV light in a pH 10 buffer, the Ni(OH)2 layer was oxidized, and it turned from colorless to brown; oxidative energy was stored in the layer. The potential of the oxidative energy thus stored was about +0.7 V versus Ag|AgCl. The stored energy could be reversibly taken out of the film by chemical and electrochemical means. The photooxidized Ni(OH)2 was rereduced by alcohols, aldehydes, phenol, I-, H2O2, formate, and acetone.Keywords
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