Copper adparticle enabled selective electrosynthesis of n-propanol

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Title:	Copper adparticle enabled selective electrosynthesis of n-propanol
Authors:	Pong, W.F.
Date:	2018-11-05
Issue Date:	2019-09-17 12:12:20 (UTC+8)
Abstract:	The electrochemical reduction of carbon monoxide is a promising approach for the renewable production of carbon-based fuels and chemicals. Copper shows activity toward multi-carbon products from CO reduction, with reaction selectivity favoring two-carbon products; however, efficient conversion of CO to higher carbon products such as n-propanol, a liquid fuel, has yet to be achieved. We hypothesize that copper adparticles, possessing a high density of under-coordinated atoms, could serve as preferential sites for n-propanol formation. Density functional theory calculations suggest that copper adparticles increase CO binding energy and stabilize two-carbon intermediates, facilitating coupling between adsorbed *CO and two-carbon intermediates to form three-carbon products. We form adparticle-covered catalysts in-situ by mediating catalyst growth with strong CO chemisorption. The new catalysts exhibit an n-propanol Faradaic efficiency of 23% from CO reduction at an n-propanol partial current density of 11 mA cm−2.
Relation:	Nature Communications 9, p.4614
DOI:	10.1038/s41467-018-07032-0
Appears in Collections:	[Graduate Institute & Department of Physics] Journal Article

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