Photoelectrochemical hydrogen production from water using p-type CaFe 2O4and n-type ZnO

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

doi:10.5796/electrochemistry.79.797

Photoelectrochemical hydrogen production from water using p-type CaFe ₂O₄and n-type ZnO

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

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

14 Citations (Scopus)

Abstract

CaFe₂O₄ (p-type) and ZnO (n-type) electrodes were prepared for photoelectrochemical hydrogen production from water. The CaFe ₂O₄ 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 CaFe₂O₄ 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. CaFe₂O₄ electrode.

Original language	English
Pages (from-to)	797-800
Number of pages	4
Journal	Electrochemistry
Volume	79
Issue number	10
DOIs	https://doi.org/10.5796/electrochemistry.79.797
Publication status	Published - Oct 2011

All Science Journal Classification (ASJC) codes

Electrochemistry

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.5796/electrochemistry.79.797

Cite this

@article{d8887cf4b8a04ca6ad95a0822097f34a,

title = "Photoelectrochemical hydrogen production from water using p-type CaFe 2O4and n-type ZnO",

abstract = "CaFe2O4 (p-type) and ZnO (n-type) electrodes were prepared for photoelectrochemical hydrogen production from water. The CaFe 2O4 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 CaFe2O4 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. CaFe2O4 electrode.",

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

year = "2011",

month = oct,

doi = "10.5796/electrochemistry.79.797",

language = "English",

volume = "79",

pages = "797--800",

journal = "Electrochemistry",

issn = "1344-3542",

publisher = "The Electrochemical Society of Japan",

number = "10",

}

TY - JOUR

T1 - Photoelectrochemical hydrogen production from water using p-type CaFe 2O4and n-type ZnO

AU - Ida, Shintaro

AU - Yamada, Keisuke

AU - Matsunaga, Takuya

AU - Hagiwara, Hidehisa

AU - Ishihara, Tatsumi

AU - Taniguchi, Takaaki

AU - Koinuma, Michio

AU - Matsumoto, Yasumichi

PY - 2011/10

Y1 - 2011/10

N2 - CaFe2O4 (p-type) and ZnO (n-type) electrodes were prepared for photoelectrochemical hydrogen production from water. The CaFe 2O4 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 CaFe2O4 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. CaFe2O4 electrode.

AB - CaFe2O4 (p-type) and ZnO (n-type) electrodes were prepared for photoelectrochemical hydrogen production from water. The CaFe 2O4 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 CaFe2O4 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. CaFe2O4 electrode.

UR - http://www.scopus.com/inward/record.url?scp=82555196930&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=82555196930&partnerID=8YFLogxK

U2 - 10.5796/electrochemistry.79.797

DO - 10.5796/electrochemistry.79.797

M3 - Article

AN - SCOPUS:82555196930

SN - 1344-3542

VL - 79

SP - 797

EP - 800

JO - Electrochemistry

JF - Electrochemistry

IS - 10

ER -