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Shape-dependent catalytic activity of oxygen reduction reaction (ORR) on silver nanodecahedra and nanocubes

The structure effects on the oxygen reduction reaction (ORR) are studied on similar sized silver nanodecahedra and nanocubes which are enclosed by (111) and (100) facets, respectively. The results show that the oxygen reduction proceeds one-step "direct" four-electron reduction on silver n...

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Published in:	Journal of power sources 2014-12, Vol.269, p.152-157
Main Authors:	QIYU WANG, CUI, Xiaoqiang, WEIMING GUAN, LEI ZHANG, XIAOFENG FAN, ZHAN SHI, WEITAO ZHENG
Format:	Article
Language:	English
Subjects:	Catalysis Catalysts: preparations and properties Catalytic activity Chemistry Competition Electrochemistry Exact sciences and technology General and physical chemistry Miscellaneous (electroosmosis, electrophoresis, electrochromism, electrocrystallization, ...) Nanocrystals Nanostructure Reduction Silver Simulation Surface chemistry Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry
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container_title	Journal of power sources
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creator	QIYU WANG CUI, Xiaoqiang WEIMING GUAN LEI ZHANG XIAOFENG FAN ZHAN SHI WEITAO ZHENG
description	The structure effects on the oxygen reduction reaction (ORR) are studied on similar sized silver nanodecahedra and nanocubes which are enclosed by (111) and (100) facets, respectively. The results show that the oxygen reduction proceeds one-step "direct" four-electron reduction on silver nanodecahedra, while two-step processes on silver nanocubes. The simulations results suggest that the different ORR catalytic activity can be interpretated by the adsorption competition between oxygen and hydroxyl on different silver facets. We demonstrate that the surface facet of silver nanocrystals is a decisive parameter to designing catalysts for ORR and other electrocatalytic reaction.
doi_str_mv	10.1016/j.jpowsour.2014.06.160
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subjects	Catalysis Catalysts: preparations and properties Catalytic activity Chemistry Competition Electrochemistry Exact sciences and technology General and physical chemistry Miscellaneous (electroosmosis, electrophoresis, electrochromism, electrocrystallization, ...) Nanocrystals Nanostructure Reduction Silver Simulation Surface chemistry Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry
title	Shape-dependent catalytic activity of oxygen reduction reaction (ORR) on silver nanodecahedra and nanocubes
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