Photocatalytic oxygen evolution using BaNbO2N modified with cobalt oxide under photoexcitation up to 740 nm

Takashi Hisatomi; Chisato Katayama; Yosuke Moriya; Tsutomu Minegishi; Masao Katayama; Hiroshi Nishiyama; Taro Yamada; Kazunari Domen

doi:10.1039/C3EE42951B

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Photocatalytic oxygen evolution using BaNbO₂N modified with cobalt oxide under photoexcitation up to 740 nm†

Takashi Hisatomi,^a Chisato Katayama,^bc Yosuke Moriya,^a Tsutomu Minegishi,^a Masao Katayama,^a Hiroshi Nishiyama,^d Taro Yamada^d and Kazunari Domen*^a

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* Corresponding authors

^a Department of Chemical System Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, 113-8656 Tokyo, Japan
E-mail: domen@chemsys.t.u-tokyo.ac.jp
Fax: +81 3 5841 8838
Tel: +81 3 5841 1148

^b Japan Technological Research Association of Artificial Photosynthetic Chemical Process (ARPChem), 5-1-5 Kashiwanoha, Kashiwa-shi, 277-8589 Chiba, Japan

^c FUJIFILM Corporation, 577, Ushijima, Kaisei-Machi, Ashigarakami-gun, 258-8577 Kanagawa, Japan

^d Department of Chemical System Engineering, School of Engineering, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa-shi, 277-8589 Chiba, Japan

Abstract

BaNbO₂N was activated for photocatalytic sacrificial water oxidation and reduction by modifying the starting material for nitridation and loading appropriate cocatalysts. Addition of BaCO₃ to the Ba₅Nb₄O₁₅ precursor improved the crystallinity and uniformity of BaNbO₂N as a nitridation product, leading to higher oxygen evolution activity. BaNbO₂N generated oxygen from an aqueous AgNO₃ solution under illumination up to 740 nm.

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Article information

DOI: https://doi.org/10.1039/C3EE42951B
Article type: Communication
Submitted: 01 Sep 2013
Accepted: 27 Sep 2013
First published: 30 Sep 2013
This article is Open Access

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Energy Environ. Sci., 2013,6, 3595-3599

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Photocatalytic oxygen evolution using BaNbO₂N modified with cobalt oxide under photoexcitation up to 740 nm

T. Hisatomi, C. Katayama, Y. Moriya, T. Minegishi, M. Katayama, H. Nishiyama, T. Yamada and K. Domen, Energy Environ. Sci., 2013, 6, 3595 DOI: 10.1039/C3EE42951B

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