Robust carbon dioxide reduction on molybdenum disulphide edges

Mohammad Asadi, Bijandra Kumar, Amirhossein Behranginia, Brian A. Rosen, Artem Baskin, Nikita Repnin, Davide Pisasale, Patrick Phillips, Wei Zhu, Richard Haasch, Robert F. Klie, Petr Král, Jeremiah Abiade and Amin Salehi-Khojin ()
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Mohammad Asadi: University of Illinois at Chicago
Bijandra Kumar: University of Illinois at Chicago
Amirhossein Behranginia: University of Illinois at Chicago
Brian A. Rosen: University of Illinois at Urbana-Champaign
Artem Baskin: University of Illinois at Chicago
Nikita Repnin: University of Illinois at Chicago
Davide Pisasale: University of Illinois at Chicago
Patrick Phillips: University of Illinois at Chicago
Wei Zhu: Dioxide Materials
Richard Haasch: Materials Research Laboratory, University of Illinois at Urbana-Champaign
Robert F. Klie: University of Illinois at Chicago
Petr Král: University of Illinois at Chicago
Jeremiah Abiade: University of Illinois at Chicago
Amin Salehi-Khojin: University of Illinois at Chicago

Nature Communications, 2014, vol. 5, issue 1, 1-8

Abstract: Abstract Electrochemical reduction of carbon dioxide has been recognized as an efficient way to convert carbon dioxide to energy-rich products. Noble metals (for example, gold and silver) have been demonstrated to reduce carbon dioxide at moderate rates and low overpotentials. Nevertheless, the development of inexpensive systems with an efficient carbon dioxide reduction capability remains a challenge. Here we identify molybdenum disulphide as a promising cost-effective substitute for noble metal catalysts. We uncover that molybdenum disulphide shows superior carbon dioxide reduction performance compared with the noble metals with a high current density and low overpotential (54 mV) in an ionic liquid. Scanning transmission electron microscopy analysis and first principle modelling reveal that the molybdenum-terminated edges of molybdenum disulphide are mainly responsible for its catalytic performance due to their metallic character and a high d-electron density. This is further experimentally supported by the carbon dioxide reduction performance of vertically aligned molybdenum disulphide.

Date: 2014
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DOI: 10.1038/ncomms5470

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