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Sunlight‐Driven Hydrogen Peroxide Production from Water and Molecular Oxygen by Metal‐Free Photocatalysts

Shiraishi, Yasuhiro, Kanazawa, Shunsuke, Kofuji, Yusuke, Sakamoto, Hirokatsu, Ichikawa, Satoshi, Tanaka, Shunsuke, Hirai, Takayuki·2014·Angewandte Chemie International Edition

Abstract

Design of green, safe, and sustainable process for the synthesis of hydrogen peroxide (H 2 O 2) is a very important subject. Early reported processes, however, require hydrogen (H 2) and palladium‐based catalysts. Herein we propose a photocatalytic process for H 2 O 2 synthesis driven by metal‐free catalysts with earth‐abundant water and molecular oxygen (O 2) as resources under sunlight irradiation (λ>400 nm). We use graphitic carbon nitride (g‐C 3 N 4) containing electron‐deficient aromatic diimide units as catalysts. Incorporating the diimide units positively shifts the valence‐band potential of the catalysts, while maintaining sufficient conduction‐band potential for O 2 reduction. Visible light irradiation of the catalysts in pure water with O 2 successfully produces H 2 O 2 by oxidation of water by the photoformed valence‐band holes and selective two‐electron reduction of O 2 by the conduction band electrons.

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Metadata

Authors
Shiraishi, Y., Kanazawa, S., Kofuji, Y., Sakamoto, H., Ichikawa, S., Tanaka, S., & Hirai, T.
Venue
Angewandte Chemie International Edition
Publisher
Wiley
Published
2014-10-07
Volume
53
Issue
49
Pages
13454-13459
ISSN
  • 1433-7851 (ISSN-L)
  • 1521-3773
OpenAlex
W2164440612
Cited by
649
References
1
FWCI
8.62
Type
journal article
Language
en
Open access
closed

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Shiraishi, Y., Kanazawa, S., Kofuji, Y., Sakamoto, H., Ichikawa, S., Tanaka, S., & Hirai, T. (2014). Sunlight‐Driven Hydrogen Peroxide Production from Water and Molecular Oxygen by Metal‐Free Photocatalysts. Angewandte Chemie International Edition. https://doi.org/10.1002/anie.201407938

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