Electrocatalytic activity and volatile product selectivity for nitrate reduction at tin-modified Pt(100), Pd(100) and Pd–Pt(100) single crystal electrodes in acidic media

Kato, Masaru; Unuma, Yuki; Okui, Manabu; Qu, Yunteng; Zheng, Jinhang; Taguchi, Satoshi; Kiguchi, Fumiya; Torihata, Mashu; Gao, Yunzhi; Hoshi, Nagahiro; Yagi, Ichizo

Electrocatalytic activity and volatile product selectivity for nitrate reduction at tin-modified Pt(100), Pd(100) and Pd–Pt(100) single crystal electrodes in acidic media

Kato, Masaru; Unuma, Yuki; Okui, Manabu et al.

Electrochimica Acta, 2021, 398, 139281

Permalink : https://hdl.handle.net/2115/90759

このアイテムのアクセス数:752件（2026-01-13 19:25 集計）

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論文情報

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アクセス権	open access
URI	https://hdl.handle.net/2115/90759
タイトル	Electrocatalytic activity and volatile product selectivity for nitrate reduction at tin-modified Pt(100), Pd(100) and Pd–Pt(100) single crystal electrodes in acidic media
著者	Kato, Masaru ; Unuma, Yuki ; Okui, Manabu ; Qu, Yunteng ; Zheng, Jinhang ; Taguchi, Satoshi ; Kiguchi, Fumiya ; Torihata, Mashu ; Gao, Yunzhi ; Hoshi, Nagahiro ; Yagi, Ichizo
e-Rad_Researcher 70709633 著者名 Kato, Masaru
著者名 Unuma, Yuki
著者名 Okui, Manabu
著者名 Qu, Yunteng
著者名 Zheng, Jinhang
e-Rad_Researcher 60281862 著者名 Taguchi, Satoshi
著者名 Kiguchi, Fumiya
著者名 Torihata, Mashu
著者名 Gao, Yunzhi
著者名 Hoshi, Nagahiro
e-Rad_Researcher 40292776 著者名 Yagi, Ichizo
キーワード	Nitrate reduction reaction
	Single crystal electrode
	Denitrification
	Differential electrochemical mass spectroscopy
	Online electrochemical mass spectroscopy
発行日	2021-12-01
出版者	Elsevier
収録物名	Electrochimica Acta
巻(号)	398
ページ	139281
抄録	We prepared Sn-modified Pt(100), Pd(100) and Pd–Pt(100) single crystal electrodes and investigated the nitrate reduction reaction (NO3RR) activity and the product selectivity for them using online electrochemical mass spectroscopy (OLEMS), also known as differential electrochemical mass spectroscopy (DEMS). OLEMS measurements allowed us to quantify volatile products of N2, N2O and NO and confirm the production of N2 at Sn/Pd(100) but not at Sn/Pt(100). Pd-doping to Pt(100) with a 3 atomic % increased the product selectivity for the NO3RR to N2. These results indicate that the presence of Pd in the (100) surface is the key to produce N2, which seems to be related to the hydrogen adsorption energy to the metal surface. The suppression of hydrogenation of intermediate species at the electrode surface could lead to the production of N2. This work will guide us to understand N2 production mechanism for the NO3RR and develop highly selective electrocatalysts for denitrification.
資源タイプ	学術雑誌論文
出版タイプ	Accepted Manuscript
権利情報	Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
権利情報	© 2021. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
PISSN	0013-4686
NCID	AA00633261
関連情報 (isVersionOf)	出版社版DOI https://doi.org/10.1016/j.electacta.2021.139281