Gold nanoparticle decoration of insulating boron nitride nanosheet on inert gold electrode toward an efficient electrocatalyst for the reduction of oxygen to water

Elumalai, Ganesan; Noguchi, Hidenori; Lyalin, Andrey; Taketsugu, Tetsuya; Uosaki, Kohei

Gold nanoparticle decoration of insulating boron nitride nanosheet on inert gold electrode toward an efficient electrocatalyst for the reduction of oxygen to water

Elumalai, Ganesan; Noguchi, Hidenori; Lyalin, Andrey et al.

Electrochemistry Communications, 2016, 66, 53-57

Permalink : https://hdl.handle.net/2115/70064

このアイテムのアクセス数:816件（2026-08-19 00:49 集計）

閲覧可能ファイル

ファイル	フォーマット	サイズ	閲覧回数	説明
uosaki_HUSCUP_BN	pdf	579 KB	914

論文情報

ファイル出力 EndNote Basic出力 Mendeley出力

アクセス権	open access
URI	https://hdl.handle.net/2115/70064
タイトル	Gold nanoparticle decoration of insulating boron nitride nanosheet on inert gold electrode toward an efficient electrocatalyst for the reduction of oxygen to water
著者	Elumalai, Ganesan ; Noguchi, Hidenori ; Lyalin, Andrey ; Taketsugu, Tetsuya ; Uosaki, Kohei
著者名 Elumalai, Ganesan
e-Rad_Researcher 60374188 著者名 Noguchi, Hidenori
著者名 Lyalin, Andrey
e-Rad_Researcher 90280932 著者名 Taketsugu, Tetsuya
e-Rad_Researcher 20133697 著者名 Uosaki, Kohei
言語	英語
キーワード	Fuel cell
	Boron nitride
	Oxygen reduction reaction
	Gold nanoparticle
	Gold electrode
発行日	2016-05
出版者	Elsevier
収録物名	Electrochemistry Communications
巻(号)	66
ページ	53-57
抄録	Overpotential for oxygen reduction reaction (ORR) at Au electrode is reported to be reduced by 0.27 V by the modification with boron nitride nanosheet (BNNS) but oxygen is reduced only to H2O2 by 2-electron process at Au electrode. Here we demonstrate that the decoration of BNNS with gold nanoparticles (AuNP) not only reduces the overpotential for ORR further by ca. 50 mV, but also opens a 4-electron reduction route to water. Both rotating disk electrode experiments with Koutecky-Levich analysis and rotating ring disk electrode measurements show that more than 50% of oxygen is reduced to water via 4-electron process at Au-BNNS/Au electrode while less than 20 and 10% of oxygen are reduced to water at the BNNS/Au and bare Au electrodes, respectively. Theoretical analysis of free energy profiles for ORR at the BN monolayer with and without Au-8 cluster placed on Au(111) shows significant stabilization of adsorbed oxygen atom by the Au-8 cluster, opening a 4-electron reduction pathway.
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	© 2016, Elsevier. 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	1388-2481
関連情報 (isVersionOf)	出版社版DOI https://doi.org/10.1016/j.elecom.2016.02.021