Oxidative energy storage ability of a TiO2-Ni(OH)2 bilayer photocatalyst

Yukina Takahashi; Tetsu Tatsuma

doi:10.1021/la052107b

Oxidative energy storage ability of a TiO₂-Ni(OH)₂ bilayer photocatalyst

Yukina Takahashi, Tetsu Tatsuma

Research output: Contribution to journal › Article › peer-review

79 Citations (Scopus)

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.

Original language	English
Pages (from-to)	12357-12361
Number of pages	5
Journal	Langmuir
Volume	21
Issue number	26
DOIs	https://doi.org/10.1021/la052107b
Publication status	Published - Dec 20 2005
Externally published	Yes

All Science Journal Classification (ASJC) codes

Materials Science(all)
Condensed Matter Physics
Surfaces and Interfaces
Spectroscopy
Electrochemistry

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10.1021/la052107b

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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.",

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AU - Takahashi, Yukina

AU - Tatsuma, Tetsu

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N2 - 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.

AB - 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.

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ER -

Oxidative energy storage ability of a TiO₂-Ni(OH)₂ bilayer photocatalyst

Abstract

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