Highly Efficient CO2 Electroreduction on ZnN4 -based Single-Atom Catalyst.
Angew Chem Int Ed Engl
; 57(38): 12303-12307, 2018 Sep 17.
Article
em En
| MEDLINE
| ID: mdl-30033610
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 24â
mV), high selectivity (Faradaic efficiency for CO (FECO ) up to 95 % at -0.43â
V), remarkable durability (>75â
h without decay of FECO ), and large turnover frequency (TOF, up to 9969â
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.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
Angew Chem Int Ed Engl
Ano de publicação:
2018
Tipo de documento:
Article