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Atomic Origins of High Electrochemical CO2 Reduction Efficiency on Nanoporous Gold

Abstract

The correlation of the electrocatalytic properties and surface coordination numbers of noble metal nanocrystals have received great research interests, and under-coordinated surface atoms are known to play a key role in for instance electrochemical CO2 reduction reaction. Here, the relationships of the electroreduction of CO2 and generalized coordination numbers are investigated based on nanoporous gold (NPG) catalysts. Atom resolved structural characterization reveals that NPG displays very high density of under-coordinated surface atoms on its ligaments. Both experimental tests and theoretical calculations provide clear and consistent results that this unique surface structure is primarily responsible for its high activity in electrochemical reduction of CO2 to CO with a faradaic efficiency as high as 94%.

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Publication details

The article was received on 23 Jan 2018, accepted on 16 Apr 2018 and first published on 16 Apr 2018


Article type: Communication
DOI: 10.1039/C8NR00642C
Citation: Nanoscale, 2018, Accepted Manuscript
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    Atomic Origins of High Electrochemical CO2 Reduction Efficiency on Nanoporous Gold

    W. Zhang, J. He, S. Liu, W. Niu, P. Liu, Y. Zhao, F. Pang, W. Xi, M. Chen, W. zhang, S. Pang and Y. Ding, Nanoscale, 2018, Accepted Manuscript , DOI: 10.1039/C8NR00642C

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