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Highly Efficient CO2 Electroreduction on ZnN4 -based Single-Atom Catalyst
- Source :
- Angewandte Chemie International Edition. 57:12303-12307
- Publication Year :
- 2018
- Publisher :
- Wiley, 2018.
-
Abstract
- The electrochemical reduction reaction of carbon dioxide (CO2RR) to carbon monoxide (CO) is the basis for the further synthesis of more complex carbon-based fuels or attractive feedstock. Single-atom catalysts have unique electronic and geometric structures with respect to their bulk counterparts, thus exhibiting unexpected catalytic activities. A nitrogen-anchored Zn single-atom catalyst is presented for CO formation from CO2RR with high catalytic activity (onset overpotential down to 24 mV), high selectivity (Faradaic efficiency for CO (FECO ) up to 95 % at -0.43 V), remarkable durability (>75 h without decay of FECO ), and large turnover frequency (TOF, up to 9969 h-1 ). Further experimental and DFT results indicate that the four-nitrogen-anchored Zn single atom (Zn-N4 ) is the main active site for CO2RR with low free energy barrier for the formation of *COOH as the rate-limiting step.
- Subjects :
- Materials science
biology
Inorganic chemistry
chemistry.chemical_element
Active site
02 engineering and technology
General Chemistry
Overpotential
010402 general chemistry
021001 nanoscience & nanotechnology
Electrochemistry
01 natural sciences
Redox
Catalysis
0104 chemical sciences
chemistry.chemical_compound
chemistry
biology.protein
0210 nano-technology
Carbon
Faraday efficiency
Carbon monoxide
Subjects
Details
- ISSN :
- 14337851
- Volume :
- 57
- Database :
- OpenAIRE
- Journal :
- Angewandte Chemie International Edition
- Accession number :
- edsair.doi...........92eb31c4d3939e57fe448d6fdc9dff85