Water Oxidation under Modal Ultrastrong Coupling Conditions Using Gold/Silver Alloy Nanoparticles and Fabry-Perot Nanocavities

Suganami, Yoshiki; Oshikiri, Tomoya; Shi, Xu; Misawa, Hiroaki

Water Oxidation under Modal Ultrastrong Coupling Conditions Using Gold/Silver Alloy Nanoparticles and Fabry-Perot Nanocavities

Suganami, Yoshiki; Oshikiri, Tomoya; Shi, Xu et al.

Angewandte chemie-international edition, 2021, 60(34), 18438-18442

Permalink : https://hdl.handle.net/2115/82496

このアイテムのアクセス数:475件（2026-08-19 05:48 集計）

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https://doi.org/10.1002/anie.202103445			28

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アクセス権	open access
URI	https://hdl.handle.net/2115/82496
タイトル	Water Oxidation under Modal Ultrastrong Coupling Conditions Using Gold/Silver Alloy Nanoparticles and Fabry-Perot Nanocavities
著者	Suganami, Yoshiki ; Oshikiri, Tomoya ; Shi, Xu ; Misawa, Hiroaki
著者名 Suganami, Yoshiki
e-Rad_Researcher 60704567 著者名 Oshikiri, Tomoya
e-Rad_Researcher 20749113 著者名 Shi, Xu
e-Rad_Researcher 30253230 著者名 Misawa, Hiroaki
言語	英語
キーワード	modal strong coupling
	nanostructures
	photochemistry
	surface plasmon resonance
	water oxidation
発行日	2021-08-16
出版者	Wiley-Blackwell
収録物名	Angewandte chemie-international edition
巻(号)	60(34)
ページ	18438-18442
抄録	We developed a photoanode consisting of Au-Ag alloy nanoparticles (NPs), a TiO2 thin film and a Au film (AATA) under modal strong coupling conditions with a large splitting energy of 520 meV, which can be categorized into the ultrastrong coupling regime. We fabricated a photoanode under ultrastrong coupling conditions to verify the relationship between the coupling strength and photoelectric conversion efficiency and successfully performed efficient photochemical reactions. The AATA photoanode showed a 4.0 % maximum incident photon-to-current efficiency (IPCE), obtained at 580 nm, and the internal quantum efficiency (IQE) was 4.1 %. These results were attributed to the high hot-electron injection efficiency due to the larger near-field enhancement and relatively negative potential distribution of the hot electrons. Furthermore, hybrid mode-induced water oxidation using AATA structures was performed, with a Faraday efficiency of more than 70 % for O-2 evolution.
資源タイプ	学術雑誌論文
出版タイプ	Version of Record
PISSN	1433-7851
関連情報 (isIdenticalTo)	出版社版DOI https://doi.org/10.1002/anie.202103445