Preparation of p-Type CaFe<sub>2</sub>O<sub>4</sub> Photocathodes for Producing Hydrogen from Water

2010313 citationsJournal Article

Authors

Shintaro Ida · Kyushu University

K. Yamada · Japan Science and Technology Agency

Takuya Matsunaga · Kumamoto University

Hidehisa Hagiwara · Kyushu University

Yasumichi Matsumoto · Kumamoto University

Tatsumi Ishihara · Japan Science and Technology Agency

Abstract

An (hk0)-oriented p-type CaFe2O4 (E(g): 1.9 eV) photocathode was prepared, and hydrogen and oxygen gases were produced from a photocell short-circuited by connecting the CaFe2O4 and n-type TiO2 electrodes under illumination without applying an external voltage. The open-circuited voltage was 0.97 V and the short-circuit current was about 200 μA/cm(2), and the amount of evaluated hydrogen and oxygen gases after 2 days of reaction were about 70 and 4 μmol, respectively.

Topics & Keywords

Iron oxide chemistry and applications Copper-based nanomaterials and applications Advanced Photocatalysis Techniques

UN Sustainable Development Goals

Clean water and sanitation

Publication Details

Published in: Journal of the American Chemical Society

Volume 132, Issue 49, pp. 17343-17345

DOI: 10.1021/ja106930f

Field-Weighted Citation Impact: 6.20