Tailoring the Edge Structure of Molybdenum Disulfide toward Electrocatalytic Reduction of Carbon Dioxide
| Autor: | Mohammad Asadi, Soroosh Sharifi-Asl, Amirhossein Behranginia, Pedram Abbasi, Peter Zapol, Amin Salehi-Khojin, Reza Shahbazian-Yassar, Larry A. Curtiss, Baharak Sayahpour, Cong Liu |
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| Rok vydání: | 2016 |
| Předmět: |
Materials science
Dopant Inorganic chemistry General Engineering General Physics and Astronomy 02 engineering and technology Electrolyte Overpotential 010402 general chemistry 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences Redox 0104 chemical sciences Catalysis chemistry.chemical_compound chemistry Ionic liquid General Materials Science 0210 nano-technology Molybdenum disulfide |
| Zdroj: | ACS Nano. 11:453-460 |
| ISSN: | 1936-086X 1936-0851 |
| Popis: | Electrocatalytic conversion of carbon dioxide (CO2) into energy-rich fuels is considered to be the most efficient approach to achieve a carbon neutral cycle. Transition-metal dichalcogenides (TMDCs) have recently shown a very promising catalytic performance for CO2 reduction reaction in an ionic liquid electrolyte. Here, we report that the catalytic performance of molybdenum disulfide (MoS2), a member of TMDCs, can be significantly improved by using an appropriate dopant. Our electrochemical results indicate that 5% niobium (Nb)-doped vertically aligned MoS2 in ionic liquid exhibits 1 order of magnitude higher CO formation turnover frequency (TOF) than pristine MoS2 at an overpotential range of 50–150 mV. The TOF of this catalyst is also 2 orders of magnitude higher than that of Ag nanoparticles over the entire range of studied overpotentials (100–650 mV). Moreover, the in situ differential electrochemical mass spectrometry experiment shows the onset overpotential of 31 mV for this catalyst, which is the ... |
| Databáze: | OpenAIRE |
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