Photoelectrochemical hydrogen production from water using p-type CaFe 2 O 4 and n-type ZnO

Shintaro Ida, Keisuke Yamada, Takuya Matsunaga, Hidehisa Hagiwara, Tatsumi Ishihara, Takaaki Taniguchi, Michio Koinuma, Yasumichi Matsumoto

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

CaFe 2 O 4 (p-type) and ZnO (n-type) electrodes were prepared for photoelectrochemical hydrogen production from water. The CaFe 2 O 4 electrode showed photo-reduction current in 0.1 M NaOH aqueous solution at potentials more negative than + 0.31 V vs. Ag/AgCl, while ZnO showed photo-oxidation at potentials more positive than - 0.71 V vs. Ag/AgCl. Connecting the both electrodes under UV-light illumination, the open-circuit voltage between the electrodes was 0.82 V, and hydrogen gas was generated from the side of the CaFe 2 O 4 electrode without applying an external voltage. The gas generation continued for 4 days at least. In addition, the hydrogen was generated even under a reverse bias ( - 0.1 V) vs. CaFe 2 O 4 electrode.

Original languageEnglish
Pages (from-to)797-800
Number of pages4
JournalElectrochemistry
Volume79
Issue number10
DOIs
Publication statusPublished - Jan 1 2011

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Hydrogen production
Electrodes
Water
Hydrogen
Gases
Photooxidation
Open circuit voltage
Ultraviolet radiation
Lighting
Electric potential

All Science Journal Classification (ASJC) codes

  • Electrochemistry

Cite this

Photoelectrochemical hydrogen production from water using p-type CaFe 2 O 4 and n-type ZnO . / Ida, Shintaro; Yamada, Keisuke; Matsunaga, Takuya; Hagiwara, Hidehisa; Ishihara, Tatsumi; Taniguchi, Takaaki; Koinuma, Michio; Matsumoto, Yasumichi.

In: Electrochemistry, Vol. 79, No. 10, 01.01.2011, p. 797-800.

Research output: Contribution to journalArticle

Ida, S, Yamada, K, Matsunaga, T, Hagiwara, H, Ishihara, T, Taniguchi, T, Koinuma, M & Matsumoto, Y 2011, ' Photoelectrochemical hydrogen production from water using p-type CaFe 2 O 4 and n-type ZnO ', Electrochemistry, vol. 79, no. 10, pp. 797-800. https://doi.org/10.5796/electrochemistry.79.797
Ida, Shintaro ; Yamada, Keisuke ; Matsunaga, Takuya ; Hagiwara, Hidehisa ; Ishihara, Tatsumi ; Taniguchi, Takaaki ; Koinuma, Michio ; Matsumoto, Yasumichi. / Photoelectrochemical hydrogen production from water using p-type CaFe 2 O 4 and n-type ZnO In: Electrochemistry. 2011 ; Vol. 79, No. 10. pp. 797-800.
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