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Revealing Kinetics of Two-Electron Oxygen Reduction Reaction at Single-Molecule Level

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Title
Revealing Kinetics of Two-Electron Oxygen Reduction Reaction at Single-Molecule Level
Author(s)
Yi Xiao; Jaeyoung Hong; Xiao Wang; Tao Chen; Taeghwan Hyeon; Weilin Xu
Subject
HYDROGEN-PEROXIDE, ; CATALYTIC-ACTIVITY, ; ACTIVATION-ENERGY, ; H2O2, ; ELECTROCATALYSIS, ; IRON, ; NANOPARTICLES, ; OXIDATION, ; PATHWAYS, ; DYNAMICS
Publication Date
2020-07
Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, v.142, no.30, pp.13201 - 13209
Publisher
AMER CHEMICAL SOC
Abstract
© 2020 American Chemical Society. By combining single-molecule fluorescence microscopy with traditional electrochemical methods, herein we report on the investigation of the electrocatalytic kinetics of two-electron (2e) pathway of oxygen reduction reaction (ORR) on a single Fe3O4 nanoparticle. The kinetic parameters for two-electron ORR process are successfully derived at the single-particle level, and a potential dependence of dynamic heterogeneity among individual nanoparticles is revealed. Furthermore, the performance stability of individual Fe3O4 nanoparticles for 2e ORR process is studied. This study deepens our understanding to the electrocatalytic ORR process, especially the 2e pathway at single-molecule and single-particle levels
URI
https://pr.ibs.re.kr/handle/8788114/7747
DOI
10.1021/jacs.0c06020
ISSN
0002-7863
Appears in Collections:
Center for Nanoparticle Research(나노입자 연구단) > 1. Journal Papers (저널논문)
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