One-Step Preparation of Fe/N/C Single-Atom Catalysts Containing Fe-N-4 Sites from an Iron Complex Precursor with 5,6,7,8-Tetraphenyl-1,12-Diazatriphenylene Ligands

Matsumoto, Koki; Kato, Masaru; Yagi, Ichizo; Xie, Siqi; Asakura, Kiyotaka; Noro, Shin-Ichiro; Tohnai, Norimitsu; Campidelli, Stephane; Hayashi, Takashi; Onoda, Akira

One-Step Preparation of Fe/N/C Single-Atom Catalysts Containing Fe-N-4 Sites from an Iron Complex Precursor with 5,6,7,8-Tetraphenyl-1,12-Diazatriphenylene Ligands

Matsumoto, Koki; Kato, Masaru; Yagi, Ichizo et al.

Chemistry-A European Journal, 2022, 28(5), e202103545

Permalink : https://hdl.handle.net/2115/88153

このアイテムのアクセス数:391件（2026-10-14 20:58 集計）

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アクセス権	open access
URI	https://hdl.handle.net/2115/88153
タイトル	One-Step Preparation of Fe/N/C Single-Atom Catalysts Containing Fe-N-4 Sites from an Iron Complex Precursor with 5,6,7,8-Tetraphenyl-1,12-Diazatriphenylene Ligands
著者	Matsumoto, Koki ; Kato, Masaru ; Yagi, Ichizo ; Xie, Siqi ; Asakura, Kiyotaka ; Noro, Shin-Ichiro ; Tohnai, Norimitsu ; Campidelli, Stephane ; Hayashi, Takashi ; Onoda, Akira
著者名 Matsumoto, Koki
e-Rad_Researcher 70709633 著者名 Kato, Masaru
e-Rad_Researcher 40292776 著者名 Yagi, Ichizo
著者名 Xie, Siqi
e-Rad_Researcher 60175164 著者名 Asakura, Kiyotaka
e-Rad_Researcher 70373347 著者名 Noro, Shin-Ichiro
e-Rad_Researcher 30346184 著者名 Tohnai, Norimitsu
著者名 Campidelli, Stephane
e-Rad_Researcher 20222226 著者名 Hayashi, Takashi
e-Rad_Researcher 60366424 著者名 Onoda, Akira
言語	英語
キーワード	Fe/N/C single-atom catalysts
	Fe-N-4 sites
	iron-diazatriphenylene complexes
	one-step preparation
	oxygen reduction reaction (ORR)
発行日	2022-01-24
出版者	Wiley-Blackwell
収録物名	Chemistry-A European Journal
巻(号)	28(5)
ページ	e202103545
抄録	Fe/N/C single-atom catalysts containing Fe-N-x sites prepared by pyrolysis are promising cathode materials for fuel cells and metal-air batteries due to their high oxygen reduction reaction (ORR) activities. We have developed iron complexes containing N2- or N3-chelating coordination structures with preorganized aromatic rings in a 1,12-diazatriphenylene framework tethering bromo substituents as precursors to precisely construct Fe-N-4 sites in an Fe/N/C catalyst. One-step pyrolysis of the iron complex with carbon black forms atomically dispersed Fe-N-4 sites without iron aggregates. X-ray absorption spectroscopy (XAS) and electrochemical measurements revealed that the iron complex with N3-coordination is more effectively converted to Fe-N-4 sites catalyzing ORR with a TOF value of 0.21 e site(-1) s(-1) at 0.8V vs. RHE. This indicates that the formation of Fe-N-4 sites is controlled by precise tuning of the chemical structure of the iron complex precursor.
資源タイプ	学術雑誌論文
出版タイプ	Accepted Manuscript
権利情報	This is the peer reviewed version of the following article: K. Matsumoto, M. Kato, I. Yagi, S. Xie, K. Asakura, S.-i. Noro, N. Tohnai, S. Campidelli, T. Hayashi, A. Onoda, Chem. Eur. J. 2022, 28(5), e202103545, which has been published in final form at https://doi.org/10.1002/chem.202103545. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited.
PISSN	0947-6539
NCID	AA11617391
関連情報 (isVersionOf)	出版社版DOI https://doi.org/10.1002/chem.202103545