Atomic origins of high electrochemical CO2 reduction efficiency on nanoporous gold

Weiqing Zhang; Jia He; Siyu Liu; Wenxin Niu; Pan Liu; Yang Zhao; Fangjie Pang; Wei Xi; Mingwei Chen; Wei Zhang; Su-Seng Pang; Yi Ding

doi:10.1039/C8NR00642C

Atomic origins of high electrochemical CO₂ reduction efficiency on nanoporous gold†

Weiqing Zhang,

‡^a Jia He,‡^a Siyu Liu,^a Wenxin Niu,^b Pan Liu,^c Yang Zhao,^a Fangjie Pang,^a Wei Xi,^a Mingwei Chen,^cd Wei Zhang,^e Su-Seng Pang^f and Yi Ding

*^a

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* Corresponding authors

^a Tianjin Key Laboratory of Advanced Functional Porous Materials, Institute for New Energy Materials & Low-Carbon Technologies, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384, P. R. China
E-mail: yding@tjut.edu.cn

^b Center for Programmable Materials, School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore

^c School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200030, P. R. China

^d Department of Materials Science and Engineering, Johns Hopkins University, Baltimore, MD 21218, USA

^e State Key Laboratory of Quality Research in Chinese Medicine, Macau Institute for Applied Research in Medicine and Health, Macau University of Science and Technology, Macau, Taipa, P. R. China

^f Faculty of Information Technology, Macau University of Science and Technology, Macau, Taipa, P. R. China

Abstract

First principles calculations show that gold atoms with low generalized coordination numbers possess high activity for electroreduction of CO₂ to CO. Atom-resolved three-dimensional reconstruction reveals that dealloyed nanoporous gold possesses such a favourable structure characteristic, which results in a faradaic efficiency as high as 94% for CO production.

Nanoscale

Atomic origins of high electrochemical CO₂ reduction efficiency on nanoporous gold†

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