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, Amin Salehi-Khojin*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

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 (54â ‰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.

Original languageEnglish
Article number4470
JournalNature Communications
Volume5
DOIs
StatePublished - 30 Jul 2014
Externally publishedYes

Funding

FundersFunder number
National Science FoundationDMR-0959470
U.S. Department of EnergyDE-AC02-05CH11231
American Chemical Society53062-ND6
Office of Science
University of Illinois at Chicago

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