Journal
SCIENCE
Volume 353, Issue 6298, Pages 467-470Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.aaf4767
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Funding
- NSF [CBET-1512647]
- MRSEC Materials Preparation and Measurement Laboratory shared user facility at the University of Chicago [NSF-DMR-1420709]
- EPIC facility (NUANCE Center-Northwestern University)
- MRSEC program at the Materials Research Center [NSF-DMR-1121262]
- Nanoscale Science and Engineering Center at the International Institute for Nanotechnology [NSF EEC-0647560]
- State of Illinois through the International Institute for Nanotechnology
- U.S. Department of Energy from the Division of Materials Science and Engineering, Basic Energy Science [DE-AC0206CH11357]
- Div Of Chem, Bioeng, Env, & Transp Sys
- Directorate For Engineering [1512647] Funding Source: National Science Foundation
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Conversion of carbon dioxide ( CO2) into fuels is an attractive solution to many energy and environmental challenges. However, the chemical inertness of CO2 renders many electrochemical and photochemical conversion processes inefficient. We report a transition metal dichalcogenide nanoarchitecture for catalytic electrochemical CO2 conversion to carbon monoxide ( CO) in an ionic liquid. We found that tungsten diselenide nanoflakes show a current density of 18.95 milliamperes per square centimeter, CO faradaic efficiency of 24%, and CO formation turnover frequency of 0.28 per second at a low overpotential of 54 millivolts. We also applied this catalyst in a light-harvesting artificial leaf platform that concurrently oxidized water in the absence of any external potential.
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